AMPHIPODA OF SOUTHERN NEW ENGLAND. 



511 



into a jointe'l process, carpus narrower than in iirst pair, propodus oblong; palm oblique, sinuous, 

 with a projecting posterior angle, but no terminal spine; gnathopods in the female of nearly equal size, 

 of similar form, and very small in comparison with those of male; merus of both pairs produced, but 

 not so much so as in the male; carpus and propodus in both not very unequal in size; propodus 

 narrowed at proximal end and widened distally; palm oblique, rounded posteriorly, where it is armed 

 with a spine; postern-lateral angles of second and third abdominal segments with a triangular acute 



Grubia compla. Woods Hole, Mass. 



tooth; first pair of uropods with a large spine on distal end of peduncle, which is about two-fifths the 

 length of the rami; terminal uropods with rami unequal, outer or shorter one scarcely half the length 

 of peduncle; inner ramus with spines at the tip and on inner margin. 



Color variable, much as in AmpMthoe longimana. 



Length, 12 mm. 



North Carolina to Cape Coil (Smith); W Is Hole, common in the Eel Pond. 



Found among alga- and eel grass. 



Jassa marmorata Holmes, new species. 



Closely allied to /. pulchdla; rostrum small and broadly triangular; eyes round, on prominent 

 lateral lobes; both pairs of antennae stout, first shorter than second, its first basal joint much 

 shorter than second, which is a little longer than third; flagellum not much longer than last joint of 

 peduncle and composed of five or six joints, of which the first may be as long as all the rest; secondary 

 flagellum minute one-jointed; second antenn;e very stout, last joint of peduncle a little longer than 

 preceding one; flagellum short, about three-fifths the length of last joint of peduncle, and composed 



