26 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL, I28 



the third or fifth; flagellum a little longer than fourth peduncular 

 joint, and composed of 10 or 11 joints. Epistome defined from the 

 upper lip, projecting upward, rounding distally, and defined behind 

 by a deep sinus. Maxilla i, inner plate with i seta; outer plate with 

 5 long spines and i short one; palp i-jointed and armed distally with 

 spines and setae. Mandibular palp consisting of i short and i longer 

 joint. 



Gnathopod i slender; second joint about as long as the fifth and 

 sixth combined; fifth joint nearly four-fifths as long as the sixth; 

 sixth slightly curved and tapering distally; seventh joint slender, 

 curved, and a little over half the length of the sixth joint. Gnathopod 

 2, second joint equal in length to the sixth; fifth joint a little over 

 half the length of the sixth ; sixth joint very little wider than the fifth, 

 the front and hind margins slightly convex, palm equal in length to 

 the hind margin of the joint, defined by a tooth beyond which is a 

 long sinus followed by a prominence bearing several teeth; seventh 

 joint curved and a little shorter than palm, bearing a row of minute 

 setules on the inner margin and a row of short spinules on the outer 

 margin. 



Peraeopods i and 2 alike in form, but i the longer. Peraeopods 4 

 and 5 alike, second joint not expanded; fourth joint very little 

 expanded and produced behind into a narrow lobe which reaches to 

 about the middle of the fifth joint; seventh joint rather short and 

 stout. Telson long and narrow, without lateral spines, and reaching 

 the middle of the peduncle of uropod 3. Length of male 3 mm. 



Female. — Much like the male except in gnathopod 2, which is not 

 as stout as that of the male, sixth joint with palm shorter than the 

 hind margin of the joint, defined by a slight tooth followed by a 

 shallow sinus and then by a slight convex prominence bearing a few 

 low teeth; seventh joint equal in length to the palm and bearing a 

 small forward-pointing tooth distally. Length about equal to that of 

 the male. 



Type. — A male, U.S.N.M. No. 95194, dredged at 6 to 50 m., 

 July 29, 1 95 1, off Point Barrow, Alaska. 



STENOTHOE BARROWENSIS, new species 

 Figure 8, n-s 



Material collected. — In 341 feet, 6 miles out, October 11, 1949, 

 2 specimens. 



Male. — Head with lateral lobes rounding. Eye medium in size and 

 colorless in alcohol. Antennae about equal in length and about half 



