﻿16 Annals of tJie South African Museum. 



rostrum. The carina of the pleon is most marked on the sixth 

 segment. The pointed apex of the telson has a subapical 

 process on each side, these processes being completely flanked 

 by a pair of movable spines planted higher up, these in turn 

 being partially flanked by a nearly equal pair further up, 

 succeeded further up by a much smaller pair. The first 

 antennae have a large first joint hollowed out to receive the 

 eye, a shorter but still rather long second joint, twice the 

 length of the third joint, which nearly reaches the apex of 

 the scale of the second antenna ; the two flagella are little 

 longer than the two preceding joints of the peduncle com- 

 bined, the more slender flagellum a little longer than its 

 companion. 



The second joint of the palp of the mandible is much larger 

 than the first, widening distally and having a shallow emar- 

 gination in the setose distal border between the two rounded 

 corners. The second peraeopod is longer than the first, the 

 third than the second, the wrist contributing notably to the 

 successive elongation. The confronting ends of the fingers 

 are microscopically denticulate. The fifth peraeopod is con- 

 siderably longer than the fourth. The petasmata, as observed 

 in a specimen in which they had not come into contact, and 

 are presumably not fully developed, are in near agreement 

 with those figured by de Man. In a specimen 38 mm. long 

 from apex of rostrum to apex of telson, the carapace measured 

 12 mm., or 8 mm. without the rostrum, which in this instance 

 had six teeth on the dorsal margin. The sixth pleon segment 

 was nearly 7 mm. long, and the telson slightly over 5 mm., a 

 little shorter than the inner branch of the uropod, which in 

 turn was shorter than the outer branch. In a specimen 

 38 mm, long, with 5 rostral teeth, the slender flagellum of the 

 second antenna measured 28 mm. in length. 



Locality. Cape Natal, W. by N. 6^ miles (Natal) ; depth 

 54 fathoms. A 1207. 



Pexaeopsis AFFiNis (Milne-Edwards). 



1837. Pcnaeus affinis, Milne-Edwards, Hist. Nat. Crust., vol. 2, 



p. 410. 

 1906. Mctapeneus a., Alcock, Catal. Indian Decap. Crust., pt. 3, 



fasc. 1, pp. 17, 20, pi. 3, figs. 8, 8a-b (with synonymy). 

 1911. Pcnacopsis a., de Man, Siboga Exp., vol. 39rt, p. 57. 



r* 



