KEPORT ON THE AMPHIPODA. 1079 



curved, with some slender spines and spinules here and there, the third joint less than 

 a fourth the length of the second ; the flagellum much longer than the peduncle, slender, 

 with about thirty- four joints ; the secondary flagellum of four slender joints, the last very 

 small, the four together about equal to three of the primary ; on one antenna the 

 secondary flagellum had five joints, the first two being short. 



Lower Antennas. — The fourth joint elongate, rather longer than the first of the upper 

 antennae, with some slender spines on the margins ; the fifth a little longer than the 

 fourth, similarly armed ; the flagellum of seven joints, together about equal to the fifth 

 joint of the flagellum, the first joint the longest, the joints carrying at the side and tips 

 some stout spines and some that are setiform. 



Upper Lip. — The distal margin a little less protruded than in the other species. 



Mandibles. — The cutting edge of the left mandible with five strong teeth visible and 

 probably a small sixth tooth on the side of the largest of the others ; the secondary plate 

 with five teeth ; the cutting edge on the right mandible having three small and four 

 large teeth ; the first joint of the palp widens distally, the second joint has on the front 

 margin four groups of spines, that near the apex forming a row of four ; the third joint 

 is longer than the second, and near the hind margin below the middle has two spines on 

 the outer surface ; rows of pectinate spines, large and small, are on or near the front 

 margin and apex, fringing more than half the joint. The palp therefore is not very like 

 in its armature to that of Aora kergueleni. 



Lower Lip. — The principal lobes rather narrow at the top, the flattened distal 

 margin carrying about half a dozen spines ; the mandibular processes very acute and 

 much curved, strongly divergent. 



First Maxilla?. — The second joint of the palp has no spine on the outer margin, on 

 the apical it has nine spine-teeth, and the slender spines below these do not seem to be 

 more than five or six ; the inner plate, though not shown in the figure, mx.l. C, is as in 

 other species. 



Maxillipeds.— -The inner plates have in a male specimen only three spine-teeth 

 on the distal margin, but in a female specimen they have four, so that this is no doubt a 

 variable character. 



First Gnathopods. — The side-plates are not so strongly produced forwards as in the 

 other species. The first joint rapidly widens from the narrow neck ; the hind margin is 

 furnished with nine or ten tufts of very long setae, which at the lower part are so large 

 and so close together as to make a dense brush ; the second joint is not stout, and has a 

 group of several slender spines at the hinder apex ; the attachment of the third joint 

 to the wrist is very much less than half its length, and beyond the attachment the 

 process of the third joint is exceedingly narrow ; near the commencement of the process 

 the third joint has more than a dozen slender spines ; the spines of the wrist are much 

 more numerous than in the other species ; the hand widens more at the distal end, 



