398 REPORT OF NEW JERSEY STATE MUSEUM. 



Rhithropanopeus harrisii M. J. Rathbun, Amer. Nat., XXXIV, igoo, p. 138. 



Virginia province. 

 M. J. Rathbun, Occas. Papers Boston Soc. N. Hist., VII, 1905, p. 7. 



Long Island Sound. 

 ?Panopcus wurdemanfui (nee Gibbes) Leidy, Journ. Acad. Nat. Sci. Phila., 



(2) III, 1855, p. 149. Delaware Bay. 



Description. — Carapace a little broader than long, surface con- 

 vex long-itudinally. Gastric region with two transverse series of 

 minute granules. Also a transverse series of minute granules ex- 

 tends from posterior lateral tooth to gastric region, interrupted 

 at mesogastric region, where a similar median series, and then 

 another counterpart to first series on other side. Front broad, 

 scarcely produced, edge very slightly convex with obsolete 

 median notch, its forward edge producing bisected appearance, 

 upper and lower edges well defined, and median notch obsoletely 

 triangular. Each external corner of front with very slight notch 

 or emargination. Orbit large, rather ellipsoid, with slight obso- 

 lete notch on its hind edge medianly. Anterior lateral teeth obso- 

 lete or not well marked. First anterior lateral tooth obscure, 

 slightly concave-convex. Second anterior lateral tooth a little 

 better formed, though obtuse and directed forward. Third an- 

 terior lateral tooth similar to second. Fourth anterior lateral 

 tooth obsolete. No subhepatic tubercle. Surface of carapace all 

 more or less smooth, with but few hairs. Female with rather 

 broad post-abdomen, and in male much constricted at articula- 

 tion of fused and penultimate segments. Terminal segment 

 about equally broad as long, depressed distally and of partly 

 rectangular form. In female penultimate and terminal segments 

 subequally longest in series, though second and third broadest. 



Antennules large, of two subequal joints with outer swollen 

 distally. Antennae long, slender, length but little less than width 

 of front. Outer maxillipeds completely cover buccal cavern, a 

 little broader above, ischium with width about three-fifths its own 

 length, merus nearly long as wide, and other distal joints sub- 

 equal. Chelipeds unequal, rather compressed, and moderately 

 enlarged. Propodus elevated at articulation of dactylus, latter 

 not much curved and nearly closing with pollex, compressed, and 



