DECAPODA. GONOPLACID&. 



BRACHYURA. 



GENUS GONOPLAX, LEACH. 



CANCER, Fabr. Pennant. 



OCYPODA, Bosc, Latr. 



GONOPLAX, Leach, Edwards. 



Generic character, External antennae long, slender, setaceous, 

 the basal joint not notably broader than the following. Internal 

 antennae lying in transverse cells. External pedipalps with the 

 third joint transversely subquadrate, the anterior inner angle trun- 

 cate for the insertion of the palp. Anterior feet equal, extremely 

 long in the male, nearly cylindrical ; the remaining pairs somewhat 

 compressed, the fourth pair the longest, then the third, the fifth, 

 and the second. Carapace quadrate, much broader than it is long, 

 narrowed behind ; the fronto-orbitar margin extending the whole 

 breadth. Orbits long, transverse, open, terminating at the external 

 angle of the carapace. Eyes small, with extremely long pedun- 

 cles. Abdomen in both sexes seven-jointed. 



