THE CRUSTACEA OE NEW JERSEY. 455 



Description. — Carapace quite broad, surface well convex and 

 smooth, narrowing moderately to hind edge. Anterior lateral 

 angles of carapace slope vertically inw-ards, ridges quite dis- 

 tinct and well defined. As view^ed above supraorbital plate 

 almost vertical and not visible. Supraorbital plate narrow, 

 slightly convex over surface, widest slightly external to base 

 of eye-stalks. Lower edge of supraorbital plate finely granu- 

 lated, and inferiorly hairy. Front narrow^ with slight median 

 transverse depression above where extending forward between 

 eye-stalks and with outline rather evenly convex. Lateral mar- 

 gins of front slightly convex and concave, ending externally in 

 sharp lateral angle. Lower orbital edge with series of large 

 truncate tubercles, and external ones a little enlarged. Lower 

 surface of body anterior to chelipeds, also lateral regions above 

 ambulatory legs, cjuite villose in males. 



Antennules small. Antennas with rather enlarged basal joint in 

 peduncle, its hind edge hairy. Other tW'O joints in peduncle of an- 

 tennae more slender than basal joint and second longer, about 

 equals basal joint. Flagellum short, tapers to slender point, little 

 shorter than peduncle. Maxillipeds cover buccal mass, oblong 

 in shape as retracted. Left cheliped usually larger, though 

 right frequently so, heavy and elongate. Males when full- 

 grown with very long fingers, these about two-thirds length of 

 propodus, latter with lower edge somewhat sinuous, and pollex 

 straight distally. Dactylus with its tip extending to and usually 

 over tip of pollex. Tubercles on inner edges of fingers usually 

 subequal, sometimes alternating with larger or smaller ones 

 more or less uniformly in same series, and never conspicuously 

 irregular. About middle of pollex, along inner edge, one or 

 several slightly enlarged tubercles. Often several slightly en- 

 larged tubercles on inner edge of dactyl basally, and vexy 

 slightly roughened or granular along base dorsally, though very 

 short variable longitudinal groove obsolete. Palm with outer 

 dorsal surface rather coarsely tuberculate and granular, at least 

 over most of upper half, and granules becoming- minute and 

 finely obsolete below. Upper and lower edges of palms ex- 

 ternally with well-defined ridges. Inner surface of palm with 



