

1 



ENGINEER DEPARTMENT, U. S. ARM\^ 



GEOGRAPHICAL AND GEOLOGICAL EXPLORATIONS AND SURVEYS 



WEST OF THE ONE HUNDREDTH MERIDIAN. 



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



« 



CATALOGUE OF PLAINTS 



COLLECTED IX 



THE YEARS 1871, 1872, AND 1873, 



WITH 



DESCRIPTIONS OF NEW SPECIES. 



WASHINGTOJS^: 



GOVERNMENT PRINTING OFFLCE, 



1874. 



