520 GEOLOGICAL SURVEY OF THE TERRITORIES. 



EXPLANATION O!'^ PLATE III. 



EsTHERiA BELFRA'GEi Packard, and details, with details of E. jonesii Balrd, 



Fig. 1. The male of E. ieJfragei, much enlarged, in its shell. 

 Fig. 2. Second antenna ot male of JE. belfragei. 

 Fig. 3. First antenna of ^s</ima_/owesu. 

 Fig. 4. First leg of male E. belfragei. 



Fig. 5. First leg of male of E. jonesii. The process extending beyond the gill is prob- 

 ably a muscle. 

 Fig. 6. Second leg of male of E. belfragei. 

 Fig. 7. End of body, with telson, of E. jonesii. 



Fig. 1 drawn by Mr. E. Burgess ; details drawn, and filled in with the camera 

 lucida, by the author. 



