6 ANNUAL REPORT OF THE 



During the progress of this work, a few types of rodents, reported 

 as missing from the collection of the United States National 

 Museum (Bull. 62, U. S. N. M., 1909), were found. These types, 

 received from the Smithsonian Institution many years ago, and 

 catalogued as Museum specimens, have been returned to the 

 National Museum. 



The burden of the cooperative work undertaken in conjunction 

 with the Boston Society of Natural History devolves at present 

 almost entirely upon Mr. Bangs, as the transfer from the Society 

 consists in large measure of mounted birds which require reiden- 

 tification, and the selection of a typical series to be returned to 

 the Society. This work somewhat delays the prompt record of 

 current accessions. During the year, more than 5,500 skins, new 

 accessions or accessions not previously entered, have been identi- 

 fied, arranged, and partly catalogued. The principal donors are 

 Col. J. E. Thayer, Dr. J. C. Phillips, Hon. W. Cameron Forbes, 

 Prof. Theodore Lyman, Prof. H. W. Smith and Messrs. Wulsin 

 and Amory. 



Dr. Thomas Barbour has been actively engaged upon the col- 

 lection of reptiles and amphibians; he reports that an excep- 

 tionally large amount of new material has been received. Though 

 the identification of these new accessions is not quite complete, 

 the collection as a whole is in good condition and the card cata- 

 logue well up to date. As in previous years, West Indian speci- 

 mens of great rarity have been presented by Prof. Carlos de la 

 Torre, Sefior V. J. Rodriguez, and Mr. C. T. Ramsden. 



The work of Messrs. Garman and Chamberlin has varied but 

 little from the usual routine involved in the care and rearrange- 

 ment of the collections under their charge. Both have extensive 

 monographs nearing completion. 



Mr. W. F. Clapp has continued his work on the study collection 

 of mollusks, completing the rearrangement of the Opisthobranchia 

 and of two families of the Prosobranchiata. Current accessions 

 have been in large part catalogued and incorporated in the collec- 

 tion, and many desirable exchanges have been effected. As the 

 guest of Mr. Bryant Walker, Mr. Clapp visited Detroit, where, 

 through Mr. Walker's liberality, he selected more than 2,500 

 specimens for the collection of the Museum. This gift of Mr. 

 Walker includes many species either new or but poorly repre- 

 sented in the Museum series. A valuable series of 20 species 

 from Lake Tanganyika is a gift of Dr. Thomas Barbour, and 

 desirable exchanges have been carried on with Messrs. H. N. 

 Lowe, W. N. Souther, and D. Thaanum. 



