Ill 



Smith, Burnett. Senility among Gastropods (Plates X\X 



^^^^), . . . .- .'345 



Stone, Witmer. On a Collection of Birds and Mammals from 

 the Colorado Delta, Lower California. With Field Notes 



by Samuel N. Rhoads, 67g 



On a Collection of Birds from British East Africa obtained by 



Mr. George L, Harrison, Jr., 755 



TiLGHMAN, Benjamin Chew. Coon Butte, Arizona, .... 887 



