Contributions to the Crustacean fauna of South Africa. 325 



TRICHAPSEUDES n. g. 



Carapace composed of fused head aud 1st peraeon segment. Ocular 

 lobes distinct. Pleon composed of 6 segments. Antenna 2 with scale 

 at end of long 2nd joint, Mandible normal but with very large 3- jointed 

 palp fringed with pulmose setae. Maxilliped with plumose setae on 

 4th-6th joints. Peraeopods 1 and 2 normal, both with exopods, that 

 on the 2nd relatively large. Peraeopods 3-7 normal. Pleopods 

 reduced to the 3 anterior pairs, each with 2 narrow, uuiarticulate rami. 

 Uropod with outer ramus much longer than inner. 



This genus bears a strong likeness to Kalliapseiides Steb., 1910, in 

 having a large mandibular palp and in the development of plumose 

 setae on the palp of the mandible and maxilliped. In other respects, 

 however, it is allied to the typical Apseiules except in having only 

 3 pairs of pleopods. In this latter feature it is paralleled only by 

 Pagurapseudes Whitelegge, 1901, in which there are never more than 

 3 pairs, often only one or even none (cf. also Apseudes avicidaria 

 Brnrd. supra). 



TRICHAPSEUDES TRIDENS u. sp. 

 (Plate XV. Figs. 3-8.) 



Body moderately stout, with short setae developed sparingly on the 

 anterior segments, more numerously on the posterior segments and 

 pleon. 



Carapace a little longer than broad, rostrum trideutate, the median 

 tooth longest ; ocular lobes distinctly defined, apically acute, dorsal 

 surface with moderately deep grooves, postero-lateral margin fringed 

 with plumose setae. 



First 3 free peraeon segments subequal, with the lateral portions 

 distinctly marked off by dorsal grooves and notches on posterior 

 margins ; segments 4 aud 5 (free) subequal, a little longer than the 

 anterior ones ; segment 6 a little longer than half the length of 5. 

 Side-plates distinct on all the segments. 



Pleon segments 1-5 subequal, together a little longer than peraeon 

 segment 5, lateral portions with outstanding plumose setae ; telson 

 about as broad as long, triangular, tapering to a bifid apex. 



Antenna 1, 1st joint elongate, inner margin with 3 sharp teeth in 

 middle, 2nd half length of 1st, 3rd shorter than 2nd, inner and outer 

 fiagella with at least 12 and 17 joints respectively, inner with 

 plumose (?), outer with simple setae. 



Antenna 2, 1st joint produced on inner side, twice as broad as long, 

 with plumose setae on inner margin, 2nd elongate, with plumose setae 



