Figure 134. — Calappa angusta Milne Edwards. Animal 

 from North Carolina in dorsal view, approximately X 

 1.8. 



extremely small teeth. Orbit completely separated 

 from antennular cavity. 



Chelipeds with outer surface of palm divided 

 into three zones as in preceding species; upper 

 margin with six to eight teeth. Abdomen with 

 sixth segment subquadrate ; seventh segment sub- 

 triangular, slightly longer than wide. 



Measurements. — Carapace: male, length, 28 

 mm., width, 32 mm.; female, length, 23 mm., 

 width, 28 mm. 



Variations. — Posterior part narrower than 

 middle of carapace in juveniles, wider than 

 middle in adults. 



Color. — Ground color buff to buff yellow ; high 

 spots or lumps on carapace and chelipeds red. 

 Marginal spines of carapace, crest of chela and 

 lumps on crest drab. Hairs of carapace, espe- 

 cially those of hind margin, light olive yellow; 

 those of walking legs light citrous yellow. Merus 

 of chelipeds practically colorless. Under parts 

 whitish, pterygostomian region and maxillipeds 

 suffused with pale purple (Schmitt in Rathbun, 

 1937). 



Habitat. — More abundant in the Gulf Stream 

 than in adjacent inshore waters; 7.5 to 115 fath- 

 oms, rarely deeper. 



Type locality. — Barbados. 



Known range. — Off Cape Lookout, N.C., 

 through eastern Gulf of Mexico, to Grenada. 



Remarks. — Ovigerous females have been taken 

 from southern Florida in March. 



Calappa sulcata Rathbun 



Figures 135-136 



Calappa sulcata Rathbun, 1898, p. 289, pi. 0, figs. 3-4.— Hay 

 and Shore, 1918, p. 422, pi. 31, fig. 6.— Holthuls, 1958, p. 179, 

 figs. 51-54 (rev.). 



Recognition characters. — Carapace somewhat 

 wider than long, covered with uniform granula- 

 tions giving appearance of being smooth. Antero- 

 lateral margins crenulate and granulate, grading 

 into inconspicuous anterolateral wings; teeth tri- 

 angular, pointed. Posterior margin with tooth at 

 each end near base of abdomen, sharper in males 

 than in females, very low in adults, most slender 

 and sharp in juveniles; third tooth of postero- 

 lateral wings extremely sharp and slender, 

 pointed in juveniles. 



Figure 135. — Calappa sulcata Rathbun. A, large chela in 

 external view ; B, female in dorsal view ; 30 mm. in- 

 dicated. 



MARINE DECAPOD CRUSTACEANS OF THE CAROLINAS 



155 



