Contributions to the Crustacean Fauna of South Africa. 381 



longitudinal rugae and some irregular granules on dorsal surface 

 and one ruga where the dorsal and ventral surfaces meet, only 

 one ruga on the epimeron of 7th segment. Pleon segments 

 minutely granular but otherwise without ornamentation. Telson 

 triangular, a little broader than long, minutely granular, the 

 granules being largest on the central raised portion ; this part 

 bears 2 sharp longitudinal keels, slightly more prominent in $ 

 than 3 > which run from base of telson to the centre, where they 

 unite and continue as a single median, less well-defined keel, to 

 the apex ; side margins nearly straight, apex subacute. 



First antenna reaching to middle of 1st peraeon segment, 1st 

 joint H times as long as wide, 2nd joint J length of 1st, 3rd joint 

 f length of 1st, fla'gellum as long as 1st and 2nd peduncular 

 joints together, 11-jointed in $ , 10 in $ . 



Second antenna reaching to end of 2nd peraeou segment, joints 

 gradually increasing in length to 4th, 5th joint very little longer 

 than 4th, flagellum a little longer than peduncle, 17-jointed in 

 $ , 15 in 2 . 



Epistome, proximal angles bevelled off, proximal and lateral 

 margins straight, a deep oval pit occupying the greater portion 

 of the proximal end. 



Mandibles, cutting-edge obscurely bifid, secondary cutfcing-edge 

 in left tridentate, spine-row with ca. 10 spines in left, ca. 14 in 

 right, palp stout, 1st and 3rd joints subequal, 2nd longer, a strong 

 fringe of serrate setae on 2nd and 3rd joints. 



First maxilla, outer plate with 10 spines, inner plate with 4 

 plumose setae. 



Second maxilla, outer and middle plates each with 12 spines. 



Maxilliped, length of 2nd joint equal to twice width at distal end 

 but not twice that of basal width, 1 coupling-hook on inner plate, 

 4th, 5th and 6th joints lobed internally. 



Peraeopods stout ; 7th peraeopod with circlet of doubly serrate 

 spines on apex of 5th joint and 5 stout spines on inner margin of 

 6th joint, fur on 6th joint also less dense than in the other 

 peraeopods. 



Male appendages on 7th peraeon segment stout, apices blunt, 

 distance apart equal to the width of one of them. 



First to 3rd pleopods with 4 hooked setae on inner apex of 

 peduncle. Male stylet on 2nd pleopod half as long again as 

 ramus, tapering to a fine point. 



Uropods in $ extending to end of telson, inner ramus truncate 

 apically, inner apical angle subacute, outer apical angle rounded, 



