Known range. — North Carolina to Rio de 

 Janeiro, Brazil. 



Remarks. — Ovigerous females have been taken 

 in the Gulf of Mexico off Florida in June (U.S. 

 National Museum records). 



Genus Euryplax Stimpson, 1859 



Rathbun, 1918b, p. 34. — Hemming, 1958b, p. 32. 



Euryplax nitida Stimpson 



Figure 185 



Euryplax nitida Stimpson, 1859, p. 60.— Rathbun, 1918b, p. 34, 

 text-fig. 11, pi. 7 (rev.). 



Recognition characters. — Carapace smooth and 

 shining, convex. Front deeply notched on each 

 side at insertion of antennae; interantennal mar- 

 gin nearly straight. Anterolateral margins con- 

 verging anteriorly, less than half as long as 

 posterolateral margins and armed with three 

 strong teeth including outer orbital. Carapace 

 widest at level of third tooth. 



Merus of chelipeds in male with a deep round 

 pit at anterior distal corner of lower surface, pit 

 surrounded by a fringe of long hair, and with a 

 sharp curved spine near distal end of upper sur- 

 face; carpus with a sharp inner spine and inner 

 surface pilose. Walking legs slender. 



Fioubb is. - ,. Euryplax nitida Stimpson. .Male in dorsal 

 view, legs of left side nol shown, ■". mm. indicated. 



Female with narrower carapace; chelipeds more 

 nearly equal, and merus lacking pit with sur- 

 rounding hair. 



Measurements. — Carapace: male, length, 15 

 mm. ; width, 25 mm. 



Color. — Distal half of fingers white (Rathbun, 

 1918b). 



Habitat. — Shallow water to 49 fathoms. 



Type locality. — Florida Keys. 



Known range— OR Beaufort, N.C., to Texas; 

 West Indies to St. Thomas ; Bermuda. 



Remarks. — Ovigerous females have been taken 

 in June from southern Florida. 



Genus Speocarcinus Stimpson, 1850 



Rathbun. 1918b, p. 38.— Hemming, 1958b, p. 37. 

 Speocarcinus carolinertsis Stimpson 



Figure 186 



Speocarcinus carolinensU Stimpson. 1859, p. 59, pi. 1, figs. 

 1-3. — Rathbun, 1918b. p. 39, pi. 8, pi. 159, fig. 6 (rev.). 



Recognition characters. — Carapace subcylindri- 

 cal, nearly smooth, punctate, obscurely granulate 

 near margins, pubescent; gastric region and sub- 

 divisions well denned. Anterolateral margin witli 

 five teeth including outer orbital; second tooth 

 rounded and not always separated from first ; last 

 three teeth sharp, well defined. Posterolateral 

 margins parallel. Front approximately one-fourth 

 width of carapace, sinuous, nearly straight, with 

 median emargination. Eyestalks constricted near 

 cornea. 



Chelipeds strong, nearly smooth, margins 

 hairy; merus with a strong spine on upper bor- 

 der; carpus granulate internally and with a blunt 

 internal tooth ; hand with outer surface smooth, 

 microscopically granulate; dactyl with stout 

 tooth at base. Walking legs with hairy margins. 



Measurements. — Carapace: male, length, •!'■) 

 mm., width, 29 mm.: female, length, IT mm., 

 width, 27 mm. 



Habitat. — "This crab lives in the subterranean 

 galleries excavated in the mud at low-water mark 

 by the Sguilla, Callianassa, and other Crustacea, 

 or by large worms," (Stimpson in Rathbun, 

 1918b) ; near low-tide mark to 76 fathoms. 



Type locality. — Charleston Harbor. S.C. 



Known range. — South Carolina through Gulf 

 nf Mexico and West Indies to Surinam. 



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FISH AND WILDLIFE SERVICK 



