REPORT ON THE AMPH1P0DA. 1531 



Lower Antenna?. — Gland-cone very prominent ; third (first free) joint of the peduncle 

 rurved, a very little longer than the fourth joint, which is distally a little curved in the 

 opposite direction ; the fifth joint about four-fifths the length of the fourth ; the slender 

 first joint of the flagellum considerably less than half the length of the last joint of the 

 peduncle, the second and third joints quite minute. 



Mandibles. — The left mandible with a very prominent tooth at the top or front of 

 the long straight cutting edge, the secondary plate not much shorter than the principal, 

 a minute tubercle on the surface adjoining its hind margin ; the cutting edge on the right 

 mandible more convex ; the first joint of the palp very long, curved, not very broad, the 

 second and third joints subequal in length, together much shorter than the first, the third 

 more slender than the second. 



Maxilla? of the usual pattern, the second pair much smaller than the first. 



Maxillipeds. — The distal margin of the inner plate very sinuous, the outer plates 

 broad and long. 



First Gnatliopods. — The side-plates with the lower front angle acute, with a diagonal 

 ridge of the under surface directed to it. The first joint pretty evenly broad except at 

 the neck, the front margin indented at the top and microscopically pectinate ; the third 

 joint widening greatly from the narrow neck, so that the distal breadth is much greater 

 than the length of the joint, the convex hind margin pectinate on the lower half, the 

 front forming a rounded apex, the distal margin extremely sinuous ; the wrist widening 

 immediately from the broad neck to a breadth a little less than that of the third joint, 

 then narrowing greatly, so as to project but little behind the hand and scarcely at all in 

 front, the sinuous hind margin longer than the front, pectinate, the hinder part of the 

 distal margin pectinate with three or four little teeth ; the hand smooth, shorter than the 

 wrist, its length equalling or little exceeding the wrist's greatest breadth ; the finger 

 about a third of the length of the hand. 



Second Gnathopods. — The first joint with the front margin nearly straight ; the 

 third joint a little longer than in the first gnathopods ; the wrist pectinate with six 

 little teeth on the round front apex, the triangular process behind shorter than the trunk, 

 broad at the base, shorter than the hand, pectinate on both margins, the pectination of 

 the hind margin continued some way up the trunk of the joint ; the hand rather widened 

 at the centre, pectinate along the hind margin ; the finger scarcely more than a third of 

 the length of the hand. 



First and Second Perwopods as in Parapronoe clausi. 



Third Pera\pods like those of Parapronoe clausi, but the bent process within the 

 side-plates is more narrowly produced, and the fifth joint is more decidedly longer than 

 the fourth. 



Fourth Perseopods very near to those of the species just mentioned; the two limbs 

 >>f the specimen differ slightly in regard to the first joint, since in one the apex of the 



