1917 



Way J on Taxonomy of Crabs 



351 



PLATE 78 

 Map of the Friday Harbor region. The numbers refer to regions 

 where collections were made and are referred to in the body of the paper. 



Family LITHODIDAE 



KEY TO GENERA 



A. Carapace produced laterally into two wings which conceal the walk- 

 ing legs, smooth. cryptolithodes (p. 352) 

 AA. Carapace not so produced, not smooth. 



B. Carapace without spines or tubercles above but hairy. 



HAPALOGASTER (p. 352) 



BB. Carapace with spines or tubercles above. 

 C. Carapace with deep pits above. 



