THE CRUSTACEA OE NEW JERSEY. 185 



in second gnathopods. First two pairs of perasopods similar, 

 carpus much dilated, produced into very large rounded posterior 

 lobe and with several spines on edge. Propodus more or less 

 pyriform, flattened, constricted toward base, and rounded end 

 armed with several spines. Third per^eopods with basal joint, 

 merus and carpus much dilated, propodus narrow. Fourth 

 peraeopods much larger than third, with same joints dilated, 

 small and narrow propodus joined to hind angle of cjuadrate 

 carpus. Fifth peraeopods large, basal joint much enlarged, 

 wider than long, short merus produced behind into large lobe over 

 twice as broad as long, carpus much dilated and propodus much 

 larger than in preceding pairs. Three posterior abdominal 

 segments small. First uropods with very stout peduncle, bent 

 upward, upper edge with several stout spines and concave ex- 

 cept near base, where a prominence surmounted by unusually 

 stout spine, first of the series and in front of which (proximally) 

 several long setas. Rami of first uropods unequal, narrow. 

 Terminal uropods with rami about twice length of peduncle, 

 inner ramus larger and two-jointed. Telson broad, divided 

 into two lobes, which setose on outer and distal edges. Color 

 light yellowish-gray, resembling the sand in which the animal 

 lives. Length 18 mm. 



Remarks. — Known from both sides of the Atlantic along the 

 coasts of France, Britain, Holland and Norway, and on our 

 shores from Georgia to Cape Cod. This species is a burrower 

 in the sandy beaches of our shores at low-water mark, strongly 

 suggestive of Emerita talpoida. My specimens, four in num- 

 ber, obtained at Point Pleasant from Mr. Witmer Stone. Pre- 

 viously it has not been recorded from New Jersey. 



Pamily GAMMARID^. 



Body more or less slender, with segments of urosome well 

 defined. Coxal plates of moderate size, or very small. An- 

 tennae generally rather slender, and as a rule but little dif- 

 ferent in the two sexes, superior ones provided with an acces- 

 sory appendage often greatly developed. Oral parts normal, 

 except in LUljehorgia. Gnathopoda generally rather powerful 



