

ENGINEER DEPARTMENT, U. S. ARMY. 



GEOGRAPHICAL AND GEOLOGICAL EXPLORATIONS AND SURVEYS WEST 

 OF THE ONE HUNDREDTH MERIDIAN. 



FiHST Lieut. GEO. M. WHEELER, Cokp.s of EsqiNKERii, in cHAK<iE. 



T 



PKELIMINAEY UEPORT 



INVERTEBRATE FOSSILS 



(OI.I.KCI Kl> HV 



THE EXPEDITIONS OF 1871, 1872, AND 1873, 



DESCRIPTIONS OF NEW SPECIES 



C. A. WHITE, M. D. 



WASHIi^GTON: 



GOVERNMENT PRINTING OFFICE. 



^^""'^ December, 1874. 



