Contributions to the Crustacean Fauna of South Africa. 235 



margin. Inferior margin straight, both from below and from the 

 side, fringed with hairs. 



The First Antenna reaches to the middle of the 5th joint of 

 peduncle of second antenna. Its peduncle consists of 3 joints : 

 the first stout, the second subequal but narrower, the third a 

 little longer and more slender than the second. Apices of each 

 joint with setae. The flagellum equals in length the peduncle 

 and consists of 5 joints, of which the first three are subequal in 

 length and little more than half the length of the last joint of 

 the peduncle ; the fourth is as long as the three preceding ones 

 together ; the fifth minute. All the apices with fine hairs. 



The Second Antenna reaches to the end of the peraeon and is four- 

 sevenths of the total length. Peduncle of 5 joints ; first two short 

 and stout, next two longer and more slender and subequal in length ; 

 the fifth half as long again as fourth. The flagellum is 2^ 

 times as long as the peduncle and consists of about 30 joints ; 

 the first is composed of 2 or 3 incompletely fused joints, the 

 remaining joints become longer and more slender towards the 

 end. Apices of all with tine setae, but without calceoli. 



The Upper Lip is evenly rounded, with terminal and lateral 

 patches of hairs. The epistome is notched in the centre of the 

 anterior margin. 



The Mandibles. The left mandible is of the normal form, main 

 cutting-edge with 4 obliquely set teeth, inner cutting-edge (lacinia 

 mobilis) with 3 teeth ; both edges strongly chitinized. The right 

 mandible is unusual in having also two cutting-edges ; the outer 

 with 4 teeth, the inner with 3, but the inner edge is less strongly 

 chitinized than that in the left mandible, being quite pale in 

 colour. First joint of the palp the shortest, third a little longer, 

 second half as long again as first. Anterior margin of third joint 

 with a thick fringe of stout and simple (not plumose) setae. 



The Lower Lip. Lobes oblong, apically rounded, the outer 

 margin oblique distally, straight towards the base. Outer margin 

 distally with a dense fringe of long hairs, inner margin with shorter 

 hairs. 



The First Maxilla has the outer lobe gently curved, margins 

 parallel, apex with 12-13 teeth, some of the inner ones being 

 dentate. Inner lobe shorter and a little narrower, apex with 4 

 strongly plumose setae, and 2 which arise from the bases of the 

 first and third plumose setae and are plumose only at the tips. 



The Second Maxilla has the outer articulated lobe half as 

 broad again as the inner ; outer margins of both convex, extremities 



