444 REPORT OF NEW JERSEY SHTATE MUSEUM. 



branchial region. Front broad, slightly deflexed, with median 

 edge slightly concave. Orbits rather small and deep. 



Eyes globular, little smaller than stout peduncle. Antennules 

 robust, much longer than short antennae, and two basal joints 

 forming peduncle subequal. Antennae greatly attenuated, basal 

 joint largest. Outer maxillipeds broad, merus much wider than 

 long. Left cheliped larger, moderate in size, fingers large and 

 rather conic. Dactyl curved dow^n and over at tip of pollex, in 

 male, with a series of rather strong tubercles along- cutting-edge 

 of which several basally enlarged. Pollex with series of rather 

 large tubercles, also an enlarged median tubercle or tooth. Palm 

 smooth, rather robustly convex, and inner surface with trans- 

 verse plicae, though these rather indistinct, except towards car- 

 pus. Latter moderate, surface convex, with transverse plicae, 

 and rounded tubercle at inner angle. Merus robust, front edge 

 with several spines, about four distinctly developed, upper and 

 lateral surfaces with transverse plicae, and lower surface smooth. 

 Right cheliped with joints more or less smooth, only merus with 

 traces of transverse plicae, and tubercles along edges of dactyl, 

 and pollex rather small and obsolete. Female with chelipeds 

 similar to those of male, only correspondingly much smaller. 

 Ambulatory legs with dactyls sharply pointed, all joints w^ell 

 compressed and merus-joints of each with distinct transverse 

 plicae. Dactylus, propodus and carpus with more or less hairs, 

 especially along posterior edges. Post-abdomen in female twice 

 as long as in male. 



Color (in alcohol) largely warm brownish above, variegated 

 with deeper or chestnut-brown streaks. Eyes dusky or blackish. 

 Lower surface of body and legs all pale brown, much lighter 

 than dorsal surface. Legs brown above, mottled on upper por- 

 tions, especially of meral joints, with darker. Length of cara- 

 pace ly mm., width i6 mm. 



Remarks. — A species evidently of world-wide distribution, 

 living in the open sea in the Gulf weed. In the Gulf Stream it 

 has been recorded as far north as 41° North Latitude. Before, 

 it had not been noticed in New Jersey w^aters. My specimens 

 are a male, and female with ova, secured at Cape May on Sep- 



