61 Annals of the South African Museum. 



The pleopods have two little serrate coupling spines on the 

 second joint of the peduncle, and several cleft spines on the 

 inner ramus. 



The uropods in the smaller specimen have their apices almost on 

 a level ; in the larger those of the first pair do not reach quite so far 

 back as the other two ; the outer branch in the first and second pairs 

 is shorter and more serrate than the inner ; the third pair have the 

 branches laminar, much longer than the peduncle, the outer slightly 

 the longer, with a little second joint, liable to wear and tear, which 

 led Bovallius to believe that it was only a character of the young. 

 All the margins appear to have a microscopic serration. 



The telson is longer than broad, narrowing distally, the cleft 

 between the rounded apices reaching up two-fifths of the length in 

 the larger specimen, a little less in the smaller. 



Length of smaller specimen 10 mm., of the larger 13 mm., 

 11 mm. from front of head to end of third pleon segment, and 

 about 2 mm. from third pleon segment to end of telson. 



Locality. The smaller specimen was taken off Buffalo Bay, S.W. 

 by W. | W. 3^ miles, in 32 fathoms ; the larger in lat. 33 9' 30" S., 

 long. 28 3' 00" E., in 47 fathoms. From this latter station a very 

 small specimen shows quite conspicuously the character of the last 

 perseopods. 



The specific name, meaning oar-footed, refers to the blade-like 

 character of the fifth peraeopods. 



GEN. HIPPOMBDON, Boeck. 



1871. Hippomedon, Boeck, Forh. Selsk. Christian, 1870, p. 102. 

 1906. Hippomedon, Stebbing, Das Tierreich, Amphipoda, pp. 58, 

 719. 



HIPPOMEDON LONGIMANUS, Stebbing. 



1888. Platamon longimanus, Stebbing, Challenger Amphipoda, 



Reports, vol. xxix., p. 643, pi. 13. 

 1906. Hippomedon longimanus, Stebbing, Das Tierreich, Amphipoda, 



p. 60. 



In the South African specimen, as in the larger North Atlantic 

 Challenger specimen, no trace of eyes was apparent. 



The colour in spirit is pale greenish, with speckling observable 

 under the microscope. 



Length, 11 mm. 



Locality. Table Mountain E. 41 miles ; depth, 245 fathoms ; 



