OXli 


~-±fPreliminary, upon invertebrate fossils, collected by 
~Z the expeditions of 1871, 1872, and 1873, with descri.ptions of new 

0', 
species. C. A. Wh i t e, M. D. (Geographical and geological explorations 
and surveys Wes t 0 f t h e looth me r i dia n. Firs,t liell,t. 
Geo. M. Wh e eIe r, corps of engineers, in charge.) (Engineer 
department,U. S. army.) 8. Washington 1874.