THE GBAPSOID CEABS OF AMERICA. 



13 



Family GRAPSIDAE. 



Atlantic. 



Goniopsis crucntata. 

 Pachygrapsus tnaurua. 

 Pachiigrapsiis mannoratus. 

 Glyptograpsus jamaiccnsis. 

 Sesarma rcticulatum. 

 Scsanna curacaocnse. 

 Scsanna cincrcum. 

 Scsarma miersii ihcringi. 

 Scsanna robcrti. 

 Cyclograpsm integer. 



Pacific. 



Goniopsis pulchra. 

 Pacliygrapsus crassipes. 

 Pachngrapsus pubcscens. 

 Glyptograpsus iuiprcssus. 

 Scsanna acquatoriale. 

 Scsanna rhizophorac. 

 Scsanna occidcntale. 

 Scsanna biollcyi. 

 Scsanna angustum. 

 Cyclograpsus cinereus. 



Family GECARCINIDAE. 



Cardisoma guanliumi. 

 Vcidcs cordatus. 

 Gccarcinus ruricola. 1 

 Gccarcinus lateralis. \ 



Ocypode albicans. 

 Uca maracoani. 

 Uca hctcrochclos. 

 Uca spcciosa. 

 Uca subcylindrica. 



Cardisoma crassum. 



Vcidcs occidcntalis. 

 \Gecarcinus quadratus. (Also on 

 1 Atlantic side of the Isthmus.) 



the 



Family OCYPODIDAE. 



Ocypode occidcntalia. 

 Uca monUifcra. 

 Uca princcps. 

 Uca crcnulata. 

 Uca stcnodactylus. 



SPECIES ON BOTH SIDES OF THE CONTINENT. 



Family GRAPSIDAE. 



Grapsus grapsus* 



Geoyrapsus lividus. 



Pachygrapsus transversus.* 



Planes minutus.* 



Cyrtograpsus angulatus. 



Scsanna (Holometopus) angustipes. 



Aratus pisonii. 



Family GECARCINIDAE. 



Gecarcinus quadratus. 



Uca mordax. 



Family OCYPODIDAE. 



KEY TO THE SUBTUIBKS OF THE TRIBE BBACHYUEA. 1 



A*. Mouth field (endostome) prolonged forward to form a gutter. Last pair 

 of legs normal or abnormal. Female openings generally sternal. First 

 abdominal limbs of female wanting. Gills few Subtribe Oxystomata. 



1 The keys are taken almost bodily from Borradaile's On tbe Classification of the 

 Decapod Crustaceans, Ann. Mag. Nat. Hist., ser. 7, vol. 19, 1907, pp. 477-483. The 

 names in the right band margin which are printed in capitals indicate the families and 

 higher divisions treated of in this volume. 



