Crustacean Fauna of South Africa. 289 



First uropods measuring 20 mm. from base to apex of iuuer ramus 

 which is fused with peduncle, width of peduncle 5 mm., both margins 

 spinulose, length of inner ramus 5 mm., width at base 4 mm. 



Second uropods measuring 15 mm., widtli 4 mm., inner ramus 

 4 mm. long and 3 mm. wide, outer ramus 5 mm. long and 1 mm. 

 Avide. 



Locality : Buffalo River (East London) NW. by N., distant 21 miles. 

 490 fathoms, s.s. " Pieter Faure." 22/4/01. (S.A.M. No. A239.) 



The particular features of this species are to be found in the head, 

 the mandibles, third and fourth peraepods, and the uropods. 



It is probable that when more material of all the species has been 

 collected, an exhaustive comparison will lead to alterations in the 

 diagnoses of the species. The other species of the genus are C. spino- 

 sum (Fabr.) 1775, C. longipes (Bov.) 1886, and C. loveni (Bov.) 1886. 

 Stebbiug in 1888 instituted provisionally G. parlclnsoni and C.fabricii. 

 Bovallius (1889, I.e. p. 45) calls attention to the close agreement in 

 the measurements of the Challenger specimen F (C.parkinsoni) and 

 C. longipes ; the length of the antennae is distinctive, for in all other 

 species they are shorter than the head. The locality of Bovallius' 

 specimen (West coast of Australia) is not far removed from that of 

 Stebbings' specimen (North of Amboina). I feel inclined thei-efore to 

 reckon Stebbiugs' specimen F (parkinsoni) as a C. longipes. 



The Challenger specimen Gr might possibly be a C. loveni, but a 

 comparison is difficult. In the key given by Bovallius (I.e. p. 58) the 

 measurements are in fair agreement, but it must be noted that 

 Bovallius gives the length of the antennae of specimen Gr as " 11 mm." 

 instead of 20 mm. (Stebbiug: / inch). Leaving specimen Gr (fdbritii) 

 out of account, the species may be distinguished as follows : 



/Antennae longer than head, 14-18 

 teeth on lower margin . . C. Ion- 



Peduncle of uropods not twice 

 the length of rami 



gipes (Bov.). 



Antennae shorter than head, 13 teeth 

 on lower margin . . C. spinosurti 

 . (Fabr.). 



A row of 6 spines on either side of 

 mouth-parts . C. africanum n. sp. 



length of rami 1 Only 2 spines on either side of mouth- 



! parts C. loveni (Bov.). 



Unfortunately I have been unable to consult Woltereck's paper on 

 the " Valdivia " material (1902, Zool. Anz. xxvi. p. 447). 



