84 Annals of the South African Museum. 



sharp apex of which reaches the end of the first joint, the second is 

 shorter than the first but considerably longer than the third joint ; 

 the stouter flagellum consists of 17 thick joints followed by 

 10 that are thinner ; the other flagellum is more than thrice as 

 long. In the second antennae the tooth of the scale reaches only 

 a little beyond the setose portion of the blade, which slightly 

 overtops the peduncle. 



The incisor process of the mandible is broad, convex, its middle 

 tooth the largest, the rest successively smaller in each direction. 

 The first maxilla has the palp bifid, with a single spine at the apex 

 of its inner lobe. The second maxilla has the palp weak, with a 

 spine on its narrow apex, and the adjoining plate (lacinia media} 

 appears to be completely undivided. The short, transversely articu- 

 lated, finger of the second maxilliped is of notable breadth. The 

 antepenultimate joint of the third maxilliped is strongly curved, thus 

 differing from the straight form of that joint as figured by de Man 

 for A. praedator, but the difference may be referable to the much 

 smaller size of the specimen by which that species is represented ; 

 in both species the terminal joint carries very long setae ; in the 

 present the little epipods of these maxillipeds have hook-shaped 

 apices as shown in the figure, and the same character may be 

 noticed in the second peraeopods. 



The relative dimensions of the large left and the much smaller 

 right cheliped of the first pair may be judged from the figures, the left 

 hand being about 19 mm. and the right about 12 mm. long. Not- 

 withstanding the great difference in the bulk of the hands, the fourth 

 joint is about the same for each limb, and has in each a sharp ridge 

 ending in a conspicuous tooth. In the second peraeopods the first 

 jointlet of the wrist is equal to the last three combined and decidedly 

 longer than the chela, the fifth is longer than the third or fourth 

 but not equal to both combined ; the second jointlet is equal 

 to the chela, in which the fingers are somewhat longer than the 

 palm. In the third and fourth peraeopods the fourth joint has the 

 inner margin produced into a prominent subapical tooth ; in 

 the third pair there are seven spines along the inner margin of the 

 sixth joint ; in the fourth pair only six spines in this position. 

 The fifth pair is more slender, its fourth joint without the sub-apical 

 tooth, its fifth joint rather longer than in the other two pairs. In 

 all the fingers are simple. 



The uropods are of great breadth, strongly fringed with plumose 

 setae, the diaeresis of the outer ramus not strongly sinuous. 



The total length of the specimen, a female with globular ova, 



