82 ^ BULLETIN 51, UNITED STATES NATIONAL MUSEUM. 



P. 799. Scientific results of explorations by the U. S. Fish Commis- 

 sion steamer Alhatross. No. XIV. Birds from the coasts 

 of western North America and adjacent islands, collected in 

 1888-89, with descriptions of new species. By Charles H. 

 Townsend. 



pp. 131-1-42. 



P. 800. Scientific results of explorations by the U. S. Fish Commis- 

 sion steamer Alhatross. No. XV. Reptiles from Clarion and 

 Socorro Islands and the Gulf of California, with description 

 of a new species. By Charles H. Townsend. 



pp. 143-144. 



P. 801. Scientific results of explorations by the U. S. Fish Commission 

 steamer Alhatross. No. XVI. Plants collected in 1889 at 

 Socorro and Clarion Islands, Pacific Ocean. By George 

 Vasey and Joseph N. Rose. 



pp. 145-149. 



P. 802. On a new genus and species of colubrine snakes from North 

 America. By Leonhard Stejneger. 



pp. 151-155, 1 fig. 



P. 803. The osteological characteristics of the family Anguillidse. By 

 Theodore Gill. 



pp. 157-160. 



P. 801. The osteological characteristics of the family Synaphobranch- 

 idte. By Theodore Gill. 



pp. 161-164. 



P. 8(J5. The osteological characteristics of the family Mura?nida3. By 

 Theodore Gill. 



pp. 165-170. 



P. 806. On the disappearance of the Dick cissel, /Sjnza americana.^ 

 from the District of Columbia. By Hugh M. Smith. 



pp. 171-172. 



P. 807. Description of a new species of bat, Atalajpha semota. By 

 Harrison Allen. 



pp. 173-175. 



P. 808. On the snakes of the genus Gharlna. By Leonhard Stej- 

 neger. 



pp. 177-182. 



P. 809. On the North American lizards of the genus Barissia of Gray. 

 By Leonhard Stejneger. 



pp. 183-185. 



P. 810. A collection of stone implements from the District of Colum- 

 bia.. By S. V. Proudfit. 



pp. 187-194, 5 pis. 



P. 811. Notes on the occurrence of a young crab-eater, Elacate Canada., 

 from the Lower Hudson Valley, New York. By A. K. 

 Fisher. 



p. 1U5. 



