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Marine invertebrates.-The total number of accessions for the present year was 120, covering some 17,840 specimens. Though the number of accessions was less than last year actually 6,588 more specimens were received. The more noteworthy additions are those secured by the expeditions mentioned above, some of which may be specifically enumerated here: From Dr. Hugh M. Smith, more than 250 crustacea in connection with his investigation of the fisheries of Siam; Capt. R. A. Bartlett, 776 specimens of marine invertebrates collected off the northwest coast of Greenland during the summer of 1926; Dr. Waldo L. Schmitt, a comprehensive collection of South American crustaceans, together with miscellaneous takings of hydroids, coelenterates, annelid worms, and other forms, the result of this year's travels under the Walter Rathbone Bacon scholarship; Clarence R. Shoemaker, 3,357 specimens collected at Tortugas, Fla., under the auspices of the Carnegie Institution Marine Biological Laboratory. The United States Bureau of Fisheries, as usual, transferred large and important collections, including nearly 300 samples of plankton, partly from the cruises of the Grampus and the Bache, and partly from the Albatross Philippine tow-net hauls, in addition to 66 lots of Euphausiaceae and Mysidaceae, the basis of Dr. Walter M. Tattersall's report on these forms from the western Atlantic. Melbourne Ward, Sydney, New South Wales, Australia, presented 167 specimens of crustacea from the coast of New South Wales, a region but meagerly represented in our collections. Among the smaller contributions many deserve special reference as containing valuable type material. R. E. Coker, Chapel Hill, N. C., presented a number of slides of crustaceans, among them types of three species and subspecies; Prof. Arthur Willey, McGill University, Montreal, Canada, deposited the type specimens of the copepod Moraria laurentica, and Dr. Stillman Wright, University of Wisconsin, the holotype and paratype of Diaptomus insulanus. This courtesy of depositing types in the National Museum is highly appreciated. Dr. Frank Smith, University of Illinois, presented 10 specimens of earthworms, including holotypes of two new species, together with 511 microscope slide mounts of serial sections of earthworms.

Mollusks.-There was a slight decrease both in the number of accessions and specimens in this division. Among those received, mention is made of the following as of particular merit. Dr. Hugh M. Smith sent about 620 specimens of mollusks and squids from Siam; Gen. Tasker H. Bliss, United States Army, Washington, D. C., presented about 2,500 specimens of marine shells from the Philippine Islands; C. Walton, Peterhead, South Australia, supplied the types and a number of paratypes of 13 new species and subspecies of Thersites (Hadra) from islands in Torres Straits; the Rev. David

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C. Graham forwarded approximately 100 specimens of mollusks in continuation of collections he has made in China; C. Ping, University of Amoy, China, sent 178 lots, about 500 specimens of land, fresh-water, and marine shells from China, some being new to the collection and some extending the distribution of species; Prof. Auguste Teisseire, Colonia, Uruguay, presented 75 lots, about 127 specimens, of fresh-water bivalve shells, which contained the types and a number of paratypes of new species of Corbicula and many fine specimens of other species of that genus; Dr. H. A. Pilsbry, Academy of Natural Sciences, Philadelphia, sent four paratypes of Physa zionis Pilsbry from Zion Park, Utah; Dr. Henry Pittier, Caracas, Venezuela, forwarded 5 species, 9 specimens of fresh-water shells, including the types and 3 paratypes of 2 species; C. C. Allen, St. Petersburg, Fla., 57 lots, about 350 specimens of mollusks from Florida, the Bahamas, and Cuba; Dr. William A. Hoffman, University of Porto Rico, 67 specimens of land and marine shells; Ralph W. Jackson, 2 specimens of pearly fresh-water mussels, the type and paratype of a new species, Diplodon jacksoni Marshall; D. Bramwell, Jamaica, British West Indies, 40 lots, about 1,000 specimens, of mollusks; Joseph Harrison, Jamaica, British West Indies, 34 lots, approximately 200 specimens, of mollusks; D. Thaanum, Honolulu, Hawaii, 26 species, 61 specimens, of marine shells from Japan; Richard Buhlis, Imboden, Ark., 60 lots, 60 specimens, of pearly freshwater mussels; J. Morgan Clements, Papeete, Society Islands, 60 species, about 225 specimens, of mollusks from Cook Islands; and Dr. F. Felippone, Montevideo, Uruguay, 20 lots, consisting of 28 specimens, of marine and land shells from Uruguay.

Echinoderms.-The number of accessions received during the year was 17, more than twice the number received last year. The total number of specimens incorporated in the collection was 368, as compared with 41 last year. The most noteworthy accessions were the sea urchins of the family Cidaridae which were collected by the Bureau of Fisheries steamer Albatross on the Philippine expedition in 19071910 and reported upon by Dr. Th. Mortensen of the Zoological Museum, Copenhagen, Denmark, and the several collections made on the coast of South America by Dr. Waldo L. Schmitt, curator of marine invertebrates, while traveling under the Walter Rathbone Beacon fund.

Plants. There were 490 accessions in this division, comprising 55,750 specimens of great value, representing a slight gain in both accessions and specimens over the preceding year. The more important accessions are as follows: 9,203 specimens received as a transfer from the Bureau of Plant Industry, United States Department of Agriculture, including 5,512 mounted grasses and 1,436 Chinese specimens collected by P. H. Dorsett; 9,500 specimens of plants from

Colombia, collected for the Museum by E. P. Killip and Albert C. Smith; 11,000 specimens of Jamaican plants, chiefly ferns, collected for the Museum by William R. Maxon; 3,550 specimens from southern China, presented by the National Geographic Society, Washington, D. C.; 2,000 specimens of Chinese plants, received from the University of Nanking, China, in exchange; 1,300 specimens of plants from Asia, received as an exchange from the Museum d'Histoire Naturelle, Paris; 768 specimens of Chilean plants presented by the Rev. Brother Claude Joseph, Temuco, Chile; 1,051 specimens, chiefly from North America and Cuba, received as an exchange from the Riksmuseets Botaniska Avdelning, Stockholm; 555 specimens from Mexico and Central America, received as an exchange from Universitetes Botaniske Museum, Copenhagen; 3,035 specimens from New Mexico, presented by the Rev. Brother Arsene, Las Vegas, N. Mex.; 484 specimens chiefly of tropical American trees, presented by the Yale school of forestry, New Haven, Conn., through Prof. Samuel J. Record; 380 specimens from Peru, presented by Prof. Fortunato L. Herrera, Cuzco, Peru; 297 specimens received as an exchange from the Gray Herbarium of Harvard University, Cambridge, Mass.; 348 specimens from Alberta, presented by A. H. Brinkman, Craigmyle, Alberta, Canada; 481 specimens of Greenland plants received from the Danske Arktiske Station, Disko, Greenland; 403 specimens of Mexican plants, presented by J. G. Ortega, Mazatlan, Sinaloa, Mexico; 505 specimens received in exchange from the University of California, Berkley, Calif.; 633 specimens from Texas and Mexico, received from the University of Texas as a gift, through Prof. B. C. Tharp; 375 specimens received from the New York Botanical Garden, New York City, as an exchange; 178 specimens from Guatemala presented by the Direccion General de Agricultura, Guatemala City; 355 specimens, chiefly from Alaska, received from the Bureau of Biological Survey, United States Department of Agriculture, as a transfer.

In this connection should be mentioned the receipt in March last of the 50,000 mounted specimens constituting the remaining half of the John Donnell Smith Herbarium presented to the Smithsoriar Institution in 1905, but until this year retained for study in the custody of Captain Smith in Baltimore. The remainder of the John Donnell Smith library came to the Smithsonian Institution earlier in the year. The value of these collections to students of American botany can hardly be overestimated. The herbarium is notable in particular for its unique collections of Central American plants. These, with the material recently collected under the auspices of the National Museum, constitute the most extensive herbarium of Central American plants in existence.


The principal change in the exhibition halls in this department was the installation of the New Rocky Mountain sheep group. The group formerly on exhibition was dismantled during the previous year, but the newly prepared animals were displayed during the summer as part of the Smithsonian exhibit at the Sesquicentennial Exposition in Philadelphia. In the fall of 1926 this material was returned to the museum and the work of constructing the rocks to serve as accessories and background for the new group began. As a result of much careful labor on the part of W. L. Brown, who designed and executed the group, and his associates, the bighorn group takes its place among the largest and most successful of our more recent biological exhibits. The whole back of the large case that contains it represents a section of a mountain side, with ledges, on which stand an old ram and three younger males. The group constitutes a worthy companion to the Rocky Mountain goat case installed two years ago.

The case containing the baboons and related African monkeys has had added several recently mounted specimens. All the specimens in the case have been reinstalled and several of the older, poorly mounted ones were removed. A young female mountain gorilla, collected by B. Burbridge, was mounted during the year and installed in the African anthropoid case.

A model of the white Chinese lake dolphin, obtained in exchange, and a skeleton of a reindeer, mounted by J. Scollick, were likewise placed on exhibition. Several other specimens were mounted but await the construction of a suitable case before being exhibited. The model of a giant squid, restored during the year, was exhibited suspended from the ceiling in the fish hall, with its companion piece the giant octopus.

More than a dozen birds required for the District of Columbia exhibit mounted during the year were labeled and added to that series. Most of these were secured by Dr. P. Bartsch, who has volunteered to oversee this part of the collection. Stereograph slides showing the home life of birds have been prepared and colored under his direction and added to the local exhibit.

The care of the scientific study material by the curatorial staff of the various divisions has progressed satisfactorily, with this reservation, that on account of lack of help, progress as a rule has been at the expense of the scientific output of the members.

In the division of mammals ten quarter unit cases were added to the storage facilities for large skulls and skeletons in the attic. Considerable progress has been made during the past year in arranging this part of the collection, the new cases being used in part for storage

of new material or for the spreading of series that were too crowded. Good progress has been made in labeling and rearranging certain groups. In order to conserve space, sets of leg bones of the larger ungulates are being removed from the regular storage cases, labeled, packed in wooden boxes, and stored in the mammal range, second floor. Practically all the available space in the attic is now occupied with cases, but the entire collection stored there still remains in a crowded condition, though at this time in much better shape than ever before. Three half-unit and five quarter-unit cases have been added for the skin collection, which is still in an overcrowded condition, although now some of the smaller groups have been given proper space. Two unit cases ordered last year, but delayed owing to work on Sesquicentennial exhibits, were delivered and have materially helped to reduce the congestion of several of the larger skin cases. Three quarter-unit cases were added to the collection of small skulls located in the office rooms. These are now in fairly good shape again, but the question of additional cases in order to prevent overcrowding is quite serious owing to lack of further space. Considerable time has been devoted during the year to further arrangement of the cetacean collection, two quarter-unit cases being added. The small skulls and small skeletons have all been placed in cases. The small cetaceans alone now occupy 61 quarter-unit cases. The specimens, case trays, and cases have all been properly labeled and a card index made of this entire collection, which is now in excellent shape. Most of the larger whale skulls and skeletons are properly arranged. A rather large amount of alcoholic porpoise material has been taken from barrels in which it was stored, labeled, and put in proper containers. Quite a number of these specimens has been used for study during the past year. A few large skins and quite a number of small ones, including some used for exhibition purposes, were tanned by the taxidermists. During the year the taxidermists prepared as study specimens some 115 flat skins and 110 made-up skins. Work on cleaning large and medium skulls and skeletons by the Museum force has resulted as follows: Skulls, 267; skeletons, 52. Contract work on small and medium-sized skulls and skeletons has resulted in the cleaning of 509 skulls and 55 skeletons.

It is gratifying to report that the various collections in the division of mammals are at this time in better shape than they have ever been heretofore.

In the division of birds; the skin collection of the family of crows (Corvidae) was expanded through the release of one half-unit case from other use. Some other minor readjustments of material were made in various parts of the collection to relieve congestion without additional case room. Twelve quarter-unit storage cases and 80

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