﻿52 Annals of the South African Museum. 



A specimen with rostrum and telson practically complete 

 measured 52 mm., rostrum 13 mm., carapace with rostrum 

 23 mm., pleon 29 mm., of which the telson accounted for 

 7 mm. Here the upper carina carried 34 teeth and the lower 

 mai'gin of the rostrum 17. The length of the telson is more 

 than thrice its greatest breadth ; dorsally there is a small 

 group of setae near the base ; 6 pairs of spines are spaced to 

 the place whence the sides abruptly converge to form a pointed 

 apex flanked by a short pair of spines, with a longer pair out- 

 side them, one of the pair in our specimen abnormally shorter 

 than the other. 



The eyes are of moderate size, as preserved reddish brown, 

 with the pigment broken up into irregular compartments. In 

 Milne-Edwards' account the eyes are small, but he adds that 

 they are in contact on the median line, which would imply 

 some tumidity. To the first antennae he attributes a little 

 pointed scale, but his figure shows that this stylocerite, as 

 Bate calls it, is at least as long as the joint of which it forma 

 a part; the flagella are very unequal. The scale of the 

 second antennae has the smooth margin somewhat concave, 

 with the distal tooth reaching beyond the narrowed apical 

 margin. 



As the figures show, the denticulation of the mandibles is 

 not absolutely identical in the two members of the pair or in 

 different specimens of the same species. According to Bate 

 the palp or outer branch of the first maxillae is bifid at the 

 extremity ; in our species the extremity is only faintly 

 emarginate, with a strong seta at the inner corner, three 

 slighter setae at the outer, and a curved surface spine below 

 the apex. The vibratory apparatus of the second maxillae 

 carries very long setae on the lower end which is narrower 

 than the upper. The second maxillipeds have the terminal 

 joints as represented by Milne-Edwards, the longer but 

 narrower plate attached near the inner margin of the pre- 

 ceding joint, but partly overlapping the attachment of the 

 shorter and broader plate ; both are beset with masses of 

 curved plumose setae alike from their own margins and 

 surfaces and from the preceding joint, which contains 

 muscles directed to each of the plates. Third peraeopods 

 stouter than fourth or fifth, fingers small, with dentate 

 inner margin. 



The outer branch of the uropods has a sinuous diaeresis 



