Remarks to follow description of D. anxius (No. 67). 



Hab. — Arizona and Utah ; the types from the Gila Valley. 



The sexual difference in the anterior claws is unique and 

 afforded a basis for the erection of the genus Orsonyx by Le 

 Conte, who either did not have or did not examine the female. 

 Very few species in our fauna have the prothorax so densely 

 punctate as anxius, and this together with the still rarer im- 

 pressed median line of the pronotum will make its identifica- 

 tion easy in the absence of the male. The species is rather 

 rare in collections. 



