336 Annals of the South African Museum. 



and has the 2nd joint broader and both margins of 6th and 7th 

 joints denticulate. 



First pleopod with 5 hooked spines on inner apex of peduncle, 

 operculate, covering the other pleopods, obovate, the rounded distal 

 margin fringed with plumose setae. 



Uropods, lower (inner) ramus as long as telson, 2nd joint as 

 long as broad, margins entire, setose ; upper (outer) ramus reach- 

 ing just beyond apex of 1st joint of lower ramus, ovate, a little 

 more than twice as long as broad, apex subacute, margins entire, 

 setose. 



Length : 27 mm. and 9 mm. ; breadth : 3 mm. and 1 mm. 



Colour : The large specimen in spirit, uniform dirty pink ; the 

 smaller ones (alive) whitish with brown mottlings on the head, 

 peraeon, pleon, and uropods. 



Locality : Buffalo Eiver (East London), 2 miles above jetty 

 (tidal). One nonovigerous 5 (the large specimen referred to above). 

 18/12/98. s.s. "Pieter Faure " ; Zwartkops Kiver (Algoa Bay). 

 Several immature specimens. May, 1913. (Mrs. Patterson.) 

 (S.A.M. Nos. A68 and A2269.) 



Two other species of this genus are known : C. carinata (Kroyer) 

 from both sides of the N. Atlantic, and C. 'pusilla, Stebbing, 1904, 

 from Ceylon. The present species comes very near to the former 

 and differs only in the following respects : it is narrower in pro- 

 portion to its length, 1:9 whereas Miss Eichardson gives 1:7 for 

 C. carinata; the 2nd joint of lower ramus of uropod is as broad 

 as long, not broader than long ; the apex of the 5th joint of 1st 

 peraeopod and the tubercle on the palm of 6th joint are more pro- 

 minent ; and the lower lip is parallel-sided, not suddenly expanded 

 at the distal half and the inner angles of the lobes are rect- 

 angular not rounded (cf. figure in Norman and Stebbing, pi. 27, 

 fig. 3 Ibi.). 



C. pusilla is easily separated from both the other species in that 

 it has the 6th peraeon segment longer than the 7th and is without 

 eyes. 



EXANTHUEA, n. g. 



Very near to CyatJuira, but differing in having the flagella of 1st 

 and 2nd antennae well developed. Maxilliped 4-jointed (including 

 basal joint), mandible with obsolete molar and 3rd joint of palp 

 shorter than 2nd, flagellum of 1st and 2nd antennae well 

 developed, 1st peraeopod subchelate, other peraeopods ambulatory, 

 pleon segments with distinct sutures, 1st pleopods opercular. 



