REPORT OP NATIONAL MUSEUM, 1924 47 



United States Navy, presented 100 specimens, mostly Crustacea, col- 

 lected by himself at Constantinople, Turkey, and various localities 

 in England. Prof. M. M. Ellis, University of Missouri, donated 

 more than 500 specimens of crayfish collected by himself between 

 Missouri and Idaho, including a species new to the collection. To 

 Dr. Hugh M. Smith we owe a comprehensive collection of 729 crus- 

 taceans and 69 other marine invertebrates from Siam. An exchange 

 with the Zoological Museum at Copenhagen, Denmark, resulted in 

 the addition of 57 species, 373 specimens, of Arctic amphipods and 

 isopods, of which 13 genera and 42 species are new to our collections. 

 A large number of smaller collections by various contributors too 

 numerous to be detailed here added many species hitherto unrepre- 

 sented in the Museum. These collections were made in many coun- 

 tries, a considerable portion in China by a number of correspondents 

 to whom we are under great obligations. 



Mollusks. — Owing to the overshadowing importance of the Evezard 

 collection added to the Museum in 1923, the accessions of the present 

 year suffer by comparison. Nevertheless, the additions have been 

 many and important, notably because they come from many regions 

 from which the Museum has but little material, and also because 

 many of them contain type material of newly described species. 

 Among them are collections received from Dr. R. A. Olsson, Glovers- 

 ville, N. Y. ; Mrs. Ida S. Oldroyd, Stanford University, Calif. ; Dr. 

 Fred Baker, Point Loma, Calif.; Marcus PI. Dall, Santa Barbara, 

 Calif. ; Mrs. Carrie L. Simons, San Diego, Calif. ; Prof. E. C. Faust, 

 Baltimore, Md. ; Prof. T. D. A. Cockerell, Boulder, Colo. ; Dr. H. A. 

 Pilsbry, Philadelphia, Pa., and A. W. B. Powell, Auckland, New 

 Zealand. Dr. Paul Bartsch collected about 23,000 specimens of 

 land and marine mollusks on the island of San Salvador, Bahamas. 

 Dr. Hugh M. Smith presented 139 lots, estimated to contain 1,500 

 specimens of land, fresh water, and marine mollusks collected by 

 himself in Siam. The Museum has very little material from this 

 region, and it is hoped that this collection will contain many new 

 species when worked up. D. Thaanum, Honolulu, H. I., donated 65 

 species, 156 specimens, of marine shells from Japan and Palmyra 

 Island, and George Hamilton, Watling Island, Bahamas, about 

 2,000 specimens, 94 species, from Watling. Many species from China 

 were received from Rev. D. C. Graham, from Prof. C. Ping, 

 Nanking, and A. Jacot, Tsinan. G. G. Bardarson, Akureyri, Iceland, 

 donated marine shells from that island; the Bureau of Science, 

 Manila, P. L, and Maxwell Smith, Hartsdale, N. Y., land mollusks 

 from the Philippines; B. Sundler, Boras, Sweden, mollusks from 

 Sweden ; and Dr. F. Felippone, Montevideo, Uruguay, mollusks from 



