8 ANNUAL REPORT OF THE 



Marine Biological Department of the Carnegie Institution, Wash- 

 ington, spent six weeks, February and March, 1912, at Montego 

 Bay, Jamaica. While there he collected fifty-seven species of 

 echinoderms, many of them in considerable series; he also pre- 

 served a large amount of material that will aid in tracing the 

 history of the postlarval development of the brittle-stars. 



With the kind assent of Mr. Clarence L. Hay, Mr. J. L. Peters 

 accompanied the 1910-1911 Central American expedition of the 

 Peabody Museum. Working in extreme southern Mexico along 

 the border of British Honduras, Mr. Peters collected many desir- 

 able reptiles, birds, and mammals. 



During the year Mr. George Nelson of the Museum staff made 

 two trips to the Swan Islands, Caribbean Sea, spending about 

 eight weeks collecting on the two islands. Mr. Nelson secured 

 what is probably a complete series of reptiles, resident birds, and 

 mammals, together with some of the more conspicuous terrestrial 

 invertebrates. 



Prof. Theodore Lyman left Cambridge late in May for a short 

 trip to the Altai Mountains. He was accompanied by Mr. N. 

 Hollister of the U. S National Museum. Professor Lyman 

 arranged that the scientific results of his trip should be shared by 

 the U. S. National Museum and the Museum of Comparative 

 Zoology. This Museum will receive the birds collected, the U. S. 

 National Museum the mammals. After the publication of the 

 reports, the material will be divided between the two Museums. 



The reports of the Curators give the details of the work and of 

 the additions received in the several departments during the year. 



Mr. George Nelson's collecting trips to the Swan Islands have 

 been mentioned already. His work at the Museum has been 

 directed chiefly toward the improvement of the exhibition collec- 

 tions of vertebrates. He has mounted a number of recent reptiles, 

 birds, and mammals, among the last a specimen of Pere David's 

 Milou Deer, Elaphurus davidianus; he has completed the re- 

 mounting of the mammalian skeletons, with the exception of the 

 largest specimens, and has also remounted many skeletons of birds. 

 His time is not infrequently given up to photographic work, either 

 for the illustration of Museum publications or in answer to the 

 requests of scientific institutions and investigators. 



Mr. W. R. Zappey has mounted a number of birds and mammals 

 for exhibition ; the more noteworthy of the latter are : — a male 

 Impala, Aepyceros melampus suava, from Guaso Nyiro, British 

 East Africa, a gift of Dr. William Lord Smith, and an East Tibetan 



