U. S. GEOLOGICAL SURVEY OF THE TERRITORIES. 



MUEIDyE, PLATE V. 



Figs. 58-til, Arvioola austcrus (1862). Figs. 63-65, A. austerus (948). 

 Figs. 66-B9, A. curtatua (12196). Figs. 70-73, A. piiictoruin (1930). 



Figs. 74-7?, Nynaptoiiiys cooperi (6915). 



