South African Crustacea. 47 



suggestive of a denticle, although the same object more highly 

 magnified is quite obtuse. The third and fourth segments of the 

 pleon, and the fifth, which is overlapped by the fourth, are similarly 

 ornamented. 



The telsonic segment has some fourteen tubercles symmetrically 

 arranged, six in a triangular group near the base, and the rest in 

 pairs. Its sides are strongly convex till near the depressed terminal 

 portion, which is narrow, fringed with plumose setae, and at the 

 rounded apex carries six spines. 



The eyes are oval, not very large, as wide apart as the dimensions 

 of the head permit. The antennae are short. In the first pair the 

 second joint is stout, but only a little longer than the first or the 

 narrow third ; the tapering flagellurn is eight-jointed, not quite so 

 long as the peduncle. In the second pair the first three joints are 

 short, the fourth stouter than the fifth but slightly shorter, the 

 flagellum subequal in length to the peduncle, thirteen-jointed. 



The cutting edge in the mandibles has slender teeth ; there is a 

 spine-row of four slender curved spines ; the molar-plate is small, 

 fringed with only about ten teeth. The smooth first joint of the 

 palp is about as long as the curved and spinose third joint. The 

 inner plate of the first maxillae carries three setae, the outer plate 

 eleven spines, some of which are a little denticulate. The inner plate 

 of the second maxillae has several seta-like spines ; the middle and 

 outer plates have each four or five, one maxilla having the smaller 

 number, the other the larger, on both plates. The maxillipeds have 

 the second joint considerably longer than broad, not including the 

 hook-bearing plate, which carries also three setae. The large fifth 

 joint is fringed with five setae on the outer margin of one maxilliped, 

 with only four in its companion. 



The first gnathopod is robust, with four stout spines on the hind 

 margin of the fourth joint, fifth joint triangular, sixth very convex 

 in front, the finger stout, with a dark-coloured blunt nail, narrower 

 than the trunk, of which the hind margin forms a squared tubercle 

 just in advance of the nail. The second gnathopod and first peraeo- 

 pod are successively smaller, and differ from the first gnathopod by 

 having the fifth joint more overlapped by the fourth, more squared, 

 the sixth joint less widened, and the peculiarities of the finger less 

 demonstrative. The following pairs of perasopods are of more slender 

 structure, successively longer, with several slender spines, especially 

 on the apices of the fourth and fifth joints. In all the finger has a 

 small process with intervening setule in advance of the nail. 



As in the type species, so here, the first pleopod has the inner 



