432 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



witliont spines, except a few very minute dentiform ones along- the inner 

 edge of the i)ropodus; the piopodal digit is longitudinal and tapers to 

 a slender incurved tip ; the dactylus is a little longer and stouter than 

 the propodal <ligit, and has a long^er and more strongly curved tip, whi(;h 

 closes beneath the tip of the i)ropodus; the prehensile edges of both 

 digits are sharp and minutely crenulate. The upi>er surface and the 

 inner edge of the carpus and the upx)er surface and both edges of the 

 chela are thickly clothed with very long and soft pubescence, directed 

 distally. The succeeding pairs of legs are very nearly as in N. Steivarfi. 

 The second i^air are about three-fourths as long as the chelipeds, slender 

 and perfectly chelate. The third pair are a little longer than the second 

 and not quite as perfectly chelate. The fourth are a little longer tha.n, 

 and the lifth about as long as, the chelipeds. 



Very im perfect /ewaZe specimens, considerably larger than the males 

 above described, have the chelipeds a little larger and stouter propor- 

 tionally than in the males, and the pleura of the second to the fifth 

 somite of the abdomen very slightly less prolonged, but still acuminate 

 and spiniform, and very dilierent from N. Stcivarti. 



One of the males and an imperfect female give the following: 



Measurements. 



Length from tip of roatium to tip of telson 



Leug'tli of cai-iipiix, including' rostrum 



Lengl h (if I'ostrura 



Leujith (if lostnim in front of spines 



Breadih of car.ipax 



Heitiht of caiiqias 



lieiiiitli (it (•li>'lii)e(ls 



Lentil li <if iiicnis 



I/'Uli'tll of (.^117)118, 



Li'ULitli t)f clK'la 



Lu^adlli (if rhcla 



Leujitli (if dai-t>lus 



Length of .scroud pair of legs. 



Lcugtli uf uu'ius 



Lout^tli of carpus 



L(-n^ili of clj(.-la 



Brcadtl) of chela 



Length (if dactylus 



Lciiiitli of Ib.ird pair of legs 



Len^tii of carpus 



Lcngt li of pv^ ipodus 



Breadth ( if propodns 



Lpuy til of ]ir(i|iodal digit 



Length of dactylus. .." 



Length of loaiih pair of legs 



Length of jiropodus 



Length of d;ict\ Ills . ■ 



Leugt h ( if lift h pair of legs 



Length (if ]ii(ipodus 



Length iif dactylus 



Leugt h of t clstiu 



Breadth of telson 



Station 873 ; 100 fathoms (3 males). Station 876 ; 120 fathoms (one 

 very imperfect female from the stomach of Lopliolatilua). Station 877; 

 12G fathoms (fragments of two or three specimens). 



As Wood-Masou has remarked, the genus N'ephrojms is closely allied 



