Contributions 1o the Crustacean Fauna of South Africa. 333 



bosses some little distance apart, the margin between these being at a 

 lower level and having a minute median point, the oblique ridges 

 from the eyes to the posterior margin each bearing 3-5 small tubercles, 

 the largest being just above the posterior margin of eye and itself 

 minutely denticulate ; in some specimens there are also one or two fine 

 setules. Eyes prominent. 



Peraeon segments 2 and 3 (1st and 2nd free) subequal in length, 

 not quite as wide as head, the lateral portions somewhat swollen, 

 more prominent in some specimens than in others ; segment 4 slightly 

 longer and narrower, not separated by a marked constriction from 

 segment 3, its lateral portions also rather swollen ; segment 5 nearly 

 separated into two lateral, rather swollen portions on account of the 

 anterior margin of segment 6 almost meeting segment 4 ; segment 6 

 with rather swollen lateral portions. 



Pleon nearly as long as peraeon, normally carried bent beneath the 

 body, telson with slightly convex sides, apex acute, with two setae. 



Female. Twice as long as broad. Head with a slight notch on 

 anterior margin. Fifth peraeon segment a little longer than 4th or 

 6th. 



Larva. Head truncate, eyes prominent. 



Labrum acutely pointed. 



Antenna 1 ^ , 3rd joint longest, flagellum 5-jointed, its third joint 

 longest. 



Antenna 2 <$ , 5th joint subequal to 4th, flagellum 8-jointed. 



Mandible $ , greatest breadth less than, though in some specimens 

 nearly equal to, length, apex acute, inner margin straight, denticulate 

 almost to the apex, tooth on outer margin very prominent. 



Maxilliped, 2nd joint produced on inner distal angle, 4th joint of 

 palp not incurved. 



Peraeopod 1 ^ , 1st joint tapering, inner margin setose, 2nd joint 

 oval, tipped with setae ; in 9 apparently only 2- jointed but with a 

 nick in 1st joint indicating the fusion of 2 joints. 



Peraeopods 2 and 3 , 2nd joint sparsely tuberculate on upper 

 anterior margin, 3rd scabrous and setose in peraeopod 2 but tuber- 

 culate in peraeopod 3 on lower (hind) margin, 4th and 5th with large 

 tubercles on lower margin, 6th with numerous close-set serrations and 

 2 larger spine-setae, one in the middle of, the other at the apex of the 

 lower margin. 



Peraeopods 4-6 similar but the tubercles on the 2nd joints are on 

 the upper posterior margin and those on the 3rd-5th joints are 

 stronger. 



In the 9 the peraeopods are without tubercles except slight ones on 



