THE CANCROID CRABS OF AMERICA 593 



Plate 229 



Figure 1. Quadrella nitida, female (22021), carapace 6.7 mm. wide, dorsal view. 

 Left cheliped lacking. 



2. Quadrella nitida, male (22021), carapace 9.5 mm. wide, dorsal view. 



3. Same, ventral view. 



Plate 230 



Figure 1. Melybia thalaniita, male (18439), cara])ace 6 mm. wide, ventral view. 

 2. Melybia thalatiiita, ovigerous female (18271), carapace 8.2 mm. wide, 

 dorsal view. 

 79S.56— 30 39 



