ENGINEER DEPARTMENT, U. S. ARMY. 



GEOGRAPHICAL AND GEOLOGICAL EXPLORATIONS AND SURVEYS WEST 

 OF THE ONE HUNDREDTH MERIDIAN. 



First Lieut. GEO. M. WHEELER, Corps of Engineers, in chakge. 



PEELIMINARY REPORT 



INVERTEBRATE FOSSILS 



COLLECTED BY 



THE EXPEDITIONS OF 1871, 1872, AXD 1873, 



DESCRIPTIONS OF NEW SPECIES' 



C. A. WHITE, M. D. 



WASHINGTOi^: 



GOVERNMENT PRINTING OFFICE. 

 1874. 



