Zoology 743 



" Birds of Southwestern Mexico, collected by Francis E. 

 Sumichrast," was prepared by George N. Lawrence in 1875, 

 and an Avifauna Columbiana, being a list of birds ascer- 

 tained to inhabit the District of Columbia, by Elliott Coues 

 and D. Webster Prentiss, was published in 1883. Another 

 was a catalogue of "The Birds of Bermuda," by Saville G. 

 Reid in 1884, and "Results of Ornithological Explorations 

 in the Commander Islands and Kamtschatka," by Leonhard 

 Stejneger, appeared in 1885. 



Among the "Contributions to Knowledge" is a "Classifi- 

 cation and Synopsis of the Trochilidae," by Daniel G. Elliott, 

 which was issued in 1879, and at the same time also appeared 

 an independent " List of Described Species of Humming 

 Birds," by the same author. 



MAMMALS 



THE earliest memoirs on the mammals published by the 

 Smithsonian Institution related to fossil forms, and were is- 

 sued as "Contributions to Knowledge." Three such contri- 

 butions were furnished by Doctor Joseph Leidy. The first 

 was a "Memoir on the Extinct Species of the American Ox" 

 (1852); the second was included in "The Ancient Fauna of 

 Nebraska" (1853); and the third was "A Memoir on the Ex- 

 tinct Sloth Tribe of North America" (1855). These were all 

 well illustrated. 



A " Catalogue of North American Mammals," by Spencer 

 F. Baird, published in 1857, is merely an edition of the table 

 of contents of his work on North American mammals. An 

 analogous catalogue was published in 1884 as "A Pro- 

 visional List of the Mammals of North and Central America 

 and the West Indian Islands," by Frederick W. True. 



No work on an extensive order was for a long time pub- 



