398 Annals of the South African Museum. 



with 2 submedian ridges beginning at base, increasing in height 

 posteriorly and culminating in 2 large setose bosses, each sur- 

 mounted by a small glabrous point, apex trifid, the middle lobe 

 rather bulbous dorsally, its apex just exceeding those of the lateral 

 lobes, all three lobes apically bifid. 



First antenna, flagellum 15-jointed. 



Second antenna, flagellum 18-jointed. 



"Upper lip as broad as long, apex setose ; epistome with lateral 

 margins angularly convex. 



Mandibles, cutting-edge entire, secondary cutting-edge in left 

 mandible bidentate, spine-row with ca. 3 (?) spines in left, 5-0 

 spines in right. 



First maxilla, outer plate with 10 spines, 3 or 4 inmost ones 

 -denticulate. 



Second maxilla, outer and middle plates with 8 spines. 



First peraeopod, inner margins of 4th, 5th and 6th joints with 5, 

 4 and 5 spines respectively, outer margin of 3rd joint with 1 

 spine near base, 2 in middle, between these and apex 3-4 small 

 spines. 



Seventh peraeopod, 5th joint with 3 groups of 3 spines, the apical 

 ones much the largest, 6th joint with 3 spines in middle and 1 at 

 apex of inner margin. 



Male appendages on 7th peraeon segment contiguous, long and 

 narrow. 



Second pleopod, inner apical angle of peduncle with 2 hooked 

 setae, male stylet half as long again as ramus, straight, tapering, 

 minutely spinulose from base to apex. 



Uropods, inner ramus projecting only a little beyond telsonic 

 apex, subacute, hirsute, outer ramus twice as long, stout, apex 

 bifid, hirsute on outer surface. 



Length : 8 mm. ; breadth : 3'5 mm. 



Colour : Pale buff, apices of telsonic ridges canary yellow. 



Locality : Mozambique (Conducia Bay). 15/11/12. (K.H.B.) 

 Low-tide. 1 1 $ . (S.A.M. No. A2472.) 



Very similar to P. Jianseni, Stebbing (I.e. p. 107, pi. 9 C.) from 

 Zanzibar, but easily distinguished by the sculpturing of the pleoii 

 and the absence of denticles on the peraeon segments. 



PARISOCLADUS, n. g. 



Maxillipeds with 4th, 5th, and 6th joints inwardly produced. 

 Anterior peraeopods without natatory setae. Outer ramus of 3rd 



