516 



BULLETIN OF THE BUREAU OF FISHERIES. 



gnathopoda in male more slender than in gryUotalpa, the carpus narrower and produced at postero- 

 distal angle into a narrow triangular process which extends beyond middle of propodus; posterior 

 margin with usually one or more small teeth behind this process; propodus much narrower than in 

 gryUotalpa, being fully twice as long as wide, basal half of lower margin smooth; distal part with a low 

 projection; first gnathopoda of female similar to those of gryUotalpa, but with a shorter carpus and 

 slightly narrower propodus; second gnathopoda differing more in the two sexes than in the preceding 

 species; carpus in male elongated, with a slightly curved posterior margin; hand narrower than carpus 

 and nearly as long, over twice but scarcely three times as long as wide, with the palm somewhat 

 oblique; carpus in the female shorter than in the male and with posterior margin strongly convex; 

 hand much as in the male, but slightly shorter; posterior perfeopods extending much beyond the 

 uropods; uropods much as in gryUotalpa. 



Length, 6 mm. 



Norway (Sars); British Isles (Bate); Woods Hole, Mass., common in the Eel Pond along with the 

 preceding species. 



This species is readily distinguished from the preceding one by the two-jointed secondary flagellum 

 of the first antenna', by the more slender first gnathopoda of the male and their entirely different 

 carpal process, the less elongated hand of the second gnathopoda, and the longer and more slender 

 terminal peneopods. 



Autonoe smithi Holmes, new species. 

 Autonoe Bp. Smith, Kept. U. S. Fish Com. 1S7I-2, p. 562. 



Eyes round; first antenna- nearly as long as body; first joint of peduncle about as long as head and 

 about two-thirds as long as second, winch is nearly three times the length of third; flagellum slender, 

 longer than peduncle; secondary flagellum scarcely as long as third joint of peduncle and consisting of 

 two elongate joints and a minute terminal knob-like joint; second antenna 3 about two-thirds as long as 



Ur,. 



\uhiiKn xniillii. Woods llolr, M;lss 



first, subpediform; peduncle elongate, penultimate basal joint extending forward as the penultimate 

 basal joint of antennules, and about equaling preceding joint in length; flagellum stout, six or seven 

 jointed, shorter than last joint of peduncle, its first joint about as long as all succeeding ones; coxal 

 plates small, margins furnished with a few distant setae, the first four subquadrate, much broader than 

 deep; first gnathopods large and stout, coxal plate somewhat more irregular in outline than in the 

 following pairs of appendages; stout basal joint not more than twice as long as wide, abruptly narrowed 

 near proximal end to about half the width of lower portion; carpus very thick, about as wide as long; 

 hand broadly and irregularly ovate in outline; palm sinuous, convex below and conca-ve above, its thin 

 margin furnished with numerous minute blunt teeth, its upper end defined by a large tooth at the base 

 of which is inserted a stout spine; two prominences on the short posterior margin of hand above this 

 tooth; second gnathopods with carpus oblong, longer than hand; hand oblong, strongly convex in 

 front, slightly narrowed beyond middle; palm transverse, convex; a spine at rounded posterior angle, 



