Contributions to the Crustacean Fauna of South Africa. 417 



posterior and on the anterior margins, the anterior one more prominent 

 than the posterior, especially medianly, and in one ? specimen pro- 

 duced into an acute median tooth on segments 1-3 ; the presence of 

 these teeth is evidently a variable featm'e but cannot be called discon- 

 tinuous, as the greater prominence of the ridge in tlie medio-dorsal 

 line shows clearly how such teeth can be developed. Peraeon seg- 

 ment 5 nearly equal to segments 1-4 together, 6 and 7 very short. 

 Side-plates on segments 1-4 only. 



Pleon a little longer than peraeon segment 5, narrow-ovate, widest 

 in the middle, apex bluntly rounded. 



Antenna 1 reaching in ^ to end of 4th, in ? to beginning of 

 3rd peraeon segment, 1st joint stout, conical, apex blunt, 2nd inserted 

 before apex of 1st, only A width of 1st at the place where 2nd is 

 inserted, 3rd A width and | length of second, flagellum longer than 

 peduncle, 9-jointed in $ , 1st joint very short, 2nd twice as long as 

 any of the following, in $ with a short 1st joint and a long 2nd joint, 

 composed of a large number of partly fused joints. 



Only the basal joints of antenna 2 remaining. 



Mandible conical, tapering to a subacute, feebly bifid apex, molar, 

 spine-row and palp entirely absent. 



Maxillae 1 and 2 as figured for beddardi Tattersall (I.e. p. 26, 

 pi. 6). 



Maxilliped, 2nd joint longest, 3rd very short, 4th broad, inner 

 margin concave, inner apex acute, slightly produced, 5th as broad as 

 but scarcely ^ as long as 4th, inner margin sinuous, inner apex acute, 

 slightly produced, 6th and 7th very slender, 7th a little longer than 

 6th, epipod reaching to apex of 4th joint, ovate-lanceolate, inner 

 plate with 2 coupling-hooks (termed " sensory processes " in the 

 description of beddardi). 



Peraeopod 1 short, 2nd joint longest, nearly equal to 3rd-5th 

 together, 4th shortest, broader than long, 5th equal to 3rd, somewhat 

 ovate, inner margin convex, with 3 spine-setae distally, 6th as long as 

 but only ^ width of 5th, 7th scarcely A length of 6th. 



Peraeopods 2-4 except the 2nd joints, lost in all the specimens. 



Peraeopods 5-7 very slender, 2nd and 3rd joints subequal, 4th 

 very short, 5th a little longer than 3rd, apparently without any setae, 

 6th subequal to 3rd, narrow-ovate, widened slightly distally, setae on 

 one margin only, 7th absent. 



Pleopod 1 in <$ reaching to apex of pleon, peduncles contiguous 

 throughout their entire length, fused but with distinct suture, very 

 narrow, widening slightly before the blunt apex, ramus very small, 

 inserted obliquely on inner apex. 



