104 PROCEEDIXGS OF THE NATIONAL MUSE CM. vol.48. 



longer on second than on first pair of legs. The setae on third pair 

 of legs not plumose. 



The abdominal segments without dorsal denticles. Sixth seg- 

 ment about as long as the sum of the fourth and the fifth. The 

 telson, which has two pairs of dorsal spinules, is nearly as long as 

 the exopod of the uropods, and the exopod is somewhat shorter 

 than the endopod. 



Length. — The largest female is 24 mm., the largest male 20 mm. 

 long. 



Remarks. — In the description of the species I have not mentioned 

 the copulatory organs; the reason is seen in the diagnosis of the 

 genus, and the remarks to be found there, together with fig. \m, may 

 be sufficient. 



Distribution. — Our entire knowledge of this topic is to be found 

 above, under " Occurrence." 



Genus NEMATOSCELIS G. O. Sars. 

 All six species hitherto established are represented in the collection. 



35. NEMATOSCELIS MEGALOPS G. O. Sars (1883). 



1885. Xematoscelis megalops G. 0. Sabs, Challenger Rep., vol. 13, p. 127, pi. 23, 



figs. 5-10; pi. 24. 

 1911. Xematoscelis megalo'ps H. J. Hansen, Bull, l'lnst. Ocean. Monaco, No. 210, 



pp. 48-50, fig. 18A. 



Occurrence. — This species is at hand from 47 places in the north- 

 west Atlantic : 



Sta. 69. September 1, 1877. Lat. 42° 44' N.; long. 62° 43' W. 

 1 specimen. 



Sta. 1120. August 26, 1SS2. Lat, 40° 05' N.; long. 68° 48' W. 

 1 specimen. 



Sta. 2045. July 31, 1883. Lat. 40° 04' 20" N.; long. 68° 43' 50" 

 W. 9 specimens. 



Sta. 2046. July 31, 1883. Lat 40° 02' 49" X.; long. 68° 49' W. 

 19 specimens. 



Sta. 2047. July 31, 1883. Lat. 40° 02' 30" X.: long. 68° 49' 40" 

 W. 4 specimens. 



Sta. 1122. August 26, 1882. Lat. 40° 02' X.; long. 68° 50' W. 

 4 specimens. 



Sta. 2044. July 31, 1883. Lat. 40° 00' 30" X.; long. 68° 37' 20" 

 W. 3 specimens. 



Sta. 2213. August 22, 1884. Lat. 39° 58' 30" X.: long. 70° 30' 

 W. 3 specimens. 



Sta. 1114. August 22, 1882. Lat, 39° 58' X.; long. 30° 38' W. 

 1 specimen. 



Sta. 2183. August 2, 1884. Lat, 39° 57' 45" X. ; long. 70° 56' 30" 

 W. 7 specimens. 



