HYPERIDEA. 



997 



In the first pair of feet, the short spatulate or obovate hand is about 

 half the length of the preceding joint. The finger is a small claw, and 

 applies against the rounded terminal margin. The cilise of the fourth 

 joint are curved at apex. 



The second pair has attached at base a branchia and a fouette, and 

 these parts pertain also to all the following pairs, excepting the last, 

 which wants the fouette, though having the branchia. The fifth 

 joint of the second pair is shorter than the fourth and rather slender. 

 The setae of the fourth have a curved form, and appear as if they 

 might be used, in connexion with the following part of the leg, for 

 prehension. 



The third pair has the third and fourth joints subequal, the former 

 a little the larger, and the finger is slender, with a short claw, the 

 whole about as long as the hand. 



In the fourth pair the third joint is broad triangular and shorter 

 than the fourth ; the fourth is truncate at apex a little obliquely, and 

 is rounded at the lower angle. The finger is sparingly longer than 

 the oblique terminal margin ; the claw is very short. 



The fifth pair has a rotund coxa, and the third, fourth, and fifth 

 joints are subequal. The claw is nearly half the length of the pre- 

 ceding joint. 



In the seventh pair the coxa is straight along the anterior side and 

 prolonged at apex behind. 



The branchiae are oblong sublinear, except for the last legs, which 

 are obovate. The mandibles are like those of the Gammaridse. The 

 apex is denticulate, and there is a large molar prominence, with a 

 tuft of short setae above. The palpus is three-jointed j the first and 

 third joints are quite small and subequal, the second is very large and 

 broad, nearly circular. There are two setae at apex, and two on the 

 inner margin of second joint towards apex. 



The abdominal natatories have the basal portion very large and 

 truncate at apex. The stylets are long and slender. The first and 

 third pairs are longer than the second, and the first extends nearly as 

 far back as the last. They consist of a basal portion, and two termi- 

 nal styliform branches, each acute at apex. The basal part of the 

 first pair is as long as the terminal ; but in the last pair it is about 

 half as long as the terminal. 



Figure 7, Plate 68, probably represents the male of the preceding, 



250 



