448 REPORT OF NEW JERSEY STATE MUSEUM. 



Antennules short, slender, three-jointed. Antennae with 

 large basal joint of peduncle, inner edge hairy, second joint 

 equally long, though much more slender, and slender third 

 joint smallest. Flagellum slender, attenuated, a little shorter 

 than peduncle. Maxillipeds conceal buccal mass, and rather 

 oblong in form as retracted. Chelipeds either dextral or sinistral 

 in their enlargement. Adult or full-grown males with long, 

 slender fingers, dactyl about two-thirds length of propodus. 

 Propodus with lower edge usually very slightly double convex, 

 and pollex curved slightly up distally. Dactylus with its tip 

 extending to and usually over tip of pollex. Tubercles on inner 

 edges of fingers usually sub-equal, though sometimes somewhat 

 or slightly irregular, or alternating. About middle of pollex 

 along inner edge, and usually near tip along same edge, an 

 enlarged or conspicuous tubercle, also sometimes additional 

 ones. Frequently several tubercles on inner edge of dactyl 

 basally also enlarged more or less. Dactyl nearly smooth, or 

 mostly at best minutely granular dorsally at base, and groove 

 longitudinally at same place often short and variably obsolete. 

 Palm with outer dorsal surface tuberculate, tubercles becoming 

 smaller over median area, and very minute below. Upper and 

 lower edges of palms externally with ridges made up of minute 

 tubercles. Inner surface of palm with smooth ridge extending 

 slightly up and forAvard, its terminus not defined, and no other 

 ridges on this region, its area tuberculous, though tubercles 

 smaller or region of lower posterior bevelled surface granular. 

 No distinct superior ridge issuing from inner carpal cavit}^ 

 though surface tuberculous. Though inner edge of palm close 

 to articulation of dactylus granulated and with small tubercles, 

 usually none of latter arranged in distinct series. Internally 

 and continued forward on inner edge of pollex its entire length. 

 a series of rather conspicuous tubercles, most enlarged at the 

 bend below articulation of dactylus. Inner surfaces of fingers 

 smooth. Merus and carpus long, granulated on outer surfaces, 

 smooth on inner. Smaller cheliped elongate, fingers two-thirds 

 length of propodus, and touching at tips. Ambulatory feet of 

 second pair longest, and all rather less villose than in our other 

 species. Legs of females but little less villose than those of males- 



