LIST OP CONTRIBUTORS. 



187 



Young, Robert T. Notes on the distribution of Colorado mam- 

 mals, with a description of a new species of bat (Eptesicus 

 pallidus) from Bonlder. P '08, 403 



The occurrence of Bufo eolnmbiensis east of the Rocky 



Mountains. P '09, 298 



See Rhoads, Sam'l. N. and B. T. Young 



Zaxtzinger, William S. Meteorological observations made ait 



Phila. during: the ear 1841. J viii, 339 



On the cow tree of South America. P '44, 78 



Ziegler, Daniel. Descriptions of neAv North American Coleoptera. 



P '44, 43 ; '45, 266 

 Zittel, Karl Alfred von. Biographical notice of. P '95, 541 



