20 Annals of the South African Museum. 



the first and second antennae are the largest. The sutures 

 are not easily seen until the carapace is detached. The eyes 

 as preserved are orange-red. In the first antennae the third 

 joint is about half as long as the second, and one flagellum 

 two-thirds the length of the other. The flagellum of the 

 second antenna is considerably longer than the body. 



In the palp of the mandible the second joint exhibits 

 remarkable width. The chela of the first peraeopods is not 

 longer than the wrist, the fingers are considerably longer than 

 the palm, their confronting margins microscopically denticu- 

 late, the whole limb more setose than those which follow, 

 with minute brushes, distal on the wrist, proximal on the 

 hand, such as are more effectively developed elsewhere in the 

 Caridea. The last four joints of the fifth peraeopods are very 

 decidedly longer than the corresponding four respectively of 

 the fourth pair. The first two-fifths of the telson are broad, 

 the sides then becoming fringed with plumose setae and con- 

 verging to a sharp apex, but midway or a little beyond sending 

 out a pair of unjointed teeth. 



Locality. Tugela Eiver, N. by W. W. 15| miles (Natal) ; 

 depth 40 fathoms. A 1195. 



HALIPOEOIDES, n. g. 



Near to Haliporns, but distinguished by having the palp of the 

 mandibles three-jointed. Rostrum with one or two teeth on the 

 lower edge. Telson trifurcate. Both flagella of first antenna very 

 elongate. First peraeopods with clasping arrangement of spines 

 between the distal margin of the fifth joint and proximal of sixth. 



In 1901 Alcock speaks of Bate's Haliporns as having the rostrum 

 "toothed dorsally only, as in all the subgenera of Peneus excepting 

 Peneus itself." Since then, however, Bouvier and de Man have 

 shown that teeth may occur on the ventral margin in various species 

 of Haliporus. Thus Bouvier, commenting on the variability of the 

 rostrum in H. debilis (S. I. Smith), says that it has the ventral edge 

 sometimes unarmed, more often armed, with from one to three 

 denticles. The trifurcate telson is noted for some species of the 

 genus, but has not been adopted as a generic character. Similarly 

 the clasping spines of the first peraeopods are not present in some of 

 the species, unless they have been overlooked. I have earlier 

 suggested that the corresponding spines in Senjcstes may be used as 

 brushes and combs for the long flagella of the antennae. 



