GRAPSOIDEA. 



the carapax. Orbit with two fissures above and one below. Hands 

 nearly equal, short and very stout. Sternum broad, but somewhat 

 oblong, and the base of the abdomen is not broader than the corre- 

 sponding part of the sternum. Buccal area broader anteriorly. Epi- 

 stome as in the Cancridae. 



EUCRATE CRASSIMANUS. 



Carapax nudus, bene areolatus, areolis 2 M 3 M discretis, quoque 5 L 

 6 L discretis, 2L 3L coalitis, I L 4 L obsoletis, margine antero-latemli 

 4;-dentato, dentibus tribus posticis prominenter triangulatis ; fronte 

 fere recto, medium emarginato. Pedes antici crassi subcequi, nudi, 

 Iceves, inermes, manu infra compressd, carpo intus breviter acuminato, 

 brachio marginem posticum prope apicem unidentato. Pedes 8 postici 

 sat graciles, marginibus ciliati, tarso recto, infra hirsute tantum. 



Carapax naked, areolate, areolets 2 M, 3 M separated, 5 L, 6 L also 

 distinct, 2 L, 3 L coalesced, 1 L, 4 L obsolete. Antero-lateral mar- 

 gin four-toothed, three posterior teeth prominently triangular; front 

 nearly straight, emarginate at middle. Anterior feet stout, sub- 

 equal, naked, smooth, unarmed, hand compressed below, carpus 

 with a low point on inner side, arm having a single obtuse spine 

 or tooth on the hinder margin near apex. Eight posterior feet 

 rather slender, margins ciliate, tarsus straight, hirsute only below. 



Plate 19, fig. 2 a, male, natural size ; b, abdomen and sternum of 

 male, natural size ; c, outer maxilliped ; d, hand, natural size. 



Rio Janeiro ? 



Length of carapax, ten lines ; greatest breadth, thirteen lines ; ratio 

 of length to breadth, 1 : 1-3. The four teeth of the antero-lateral 

 margin include the posterior angle of the orbit, which tooth (the first, 

 corresponding normally to D and E) is truncate above and rounded, 

 behind; the others are subequal. Areolet 5L has its anterior margin 

 prominent and subacute, and nearly transverse. Areolet 2 F is slightly 

 raised and circumscribed ; but 1 M is not separate from 2 M. 



E. crassimanus, DANA, Proc. Acad. Nat. Sci. Philad., 1851, v. 248. 



