630 GEOLOGICATL SURVEY OF THE TERRITOEIES. 



EXPLANATION OF PLATE VIII. 



Artemia gracilis Verrill. (From Utah.) 



Fig. 1. A dorsal view of male head and claapers; oc, ocellus; at, Ist antena* ; at' , 2d 



antennsB or claspers. 

 Fig. 2. An anterior leg. 

 Fig. 3. A middle leg. 

 Fig. 4, A last leg. 

 Fig. S. End of abdomen. 

 Drawn and details filled in with camera lucida by the author. 



