206 Rev. T. ft. K. Stebbing on 



plates the third and fourth are the longest ; and these are both 

 acute. The third articulus of the mandible-palp is consider- 

 ably longer than the second. The telson is slightly emargi- 

 nate, broader at base than distally, nearly equal in length to 

 the peduncles of the last uropods. In many points it is 

 nearly allied to Amathillopsis sptmgera, Heller, and A. affinis, 



Miers. 



Family Leucothoidae. 

 Subfamily Stegocephalinje. 

 Andania gigantea, n. sp. 



Two specimens of this creature have been examined. One 

 is 1^ inch in length by ^ in depth, the other 2% inches in 

 length by H in depth. These dimensions contrast strangely 

 with the small forms of the other species of this genus. 



The first segment of the pereion is as long as the next two 

 united. The fourth epimerum is a little broader than deep, 

 of much less size relatively to its segment than the same part 

 in Andania abyssi. The first joint of the flagellum in the 

 upper antenna? is much longer than the peduncle, a little 

 longer than the remaining articuli of the flagellum, and like- 

 wise a little longer than the secondary flagellum. 



The third pleon-segment has a dorsal lobe projecting back- 

 wards; the fifth pleon-segment, on the contrary, has the 

 corresponding portion of its margin much excavated. The 

 sixth segment is slightly emarginate to receive the minute 



telson. The telson has, contrary to the generic character, a 

 small distal slit. 



The gnathopods and pereiopods are very small compared 

 with the size of the animal. 



Subfamily Iphimedinje. 



Tphimedia pulchridentata, n. sp. 



Head with depressed rostrum and bidentate sides ; eyes 

 round, a little prominent. In the upper antennae the first 

 articulus has a tooth near the base, and three distally ; the 

 second articulus has a long distal tooth projecting beyond the 

 simple third articulus. In the upper antennas the last four 

 joints of the peduncle are distally toothed. Of the pereion- 

 segments the first five have the hinder angle sharply toothed, 

 the sixth and seventh have the posterior margin divided into 

 six large processes, the seventh has a marked transverse dorsal 

 depression. In the pleon the first two segments have eight 

 marginal processes, four on either side of the central dorsal 





