Contributions to the Crustacean Fauna of South Africa. 431 



The larvae range from l-2 - 25 mm. iu length and agree with Stebbing's 

 description. The largest are probably functional $ J . 

 All three hosts were females. 

 Locality : Lion's Head SE. { E., distant 50 miles. 230 fathoms. 



1 adult ? ; South Head E. by S. S., distant 25 miles. 190 fathoms. 



2 immature ? ? and 6 larvae. (Both localities off the Cape Penin- 

 sula.) s.s. " Pieter Faure." 2/4/02 and 3/4/02. (S.A.M. Nos. A4165 

 and A4166.) 



FAMILY CABIROPSIDAE. 



1895. Cabiropsidae Giard & Bonnier, Bull. Sci. Fr. vol. 25, pp. 421, 



441, 443. 



As Stebbing has done in the case of the Cyproniscidae, I keep this 

 family separate for the sake of convenience, although Sars regards 

 it as a part of the Cryptoniscidae, 



GEN. CLYPEONISCUS Giard & Bonn. 



1895. Clypeoniscus Giard & Bonnier, I.e. p. 444. 



1899. Sars, Crust, Norw. vol. 2, p. 239. 



1905. Kichardsou, Bull. U.S. Nat. Mus. No. 51, p. 577. 



Only two species of this genus are known : hanseni Giard & Bonn, 

 and meinerti Giard & Bonn., both from the North Atlantic and 

 infesting members of the family Idoteidae. Their specific distinctness 

 is doubtful. 



Two larval specimens which may belong to this genus were found 

 on a specimen of Lanocira capensis (see supra, p. 354). 



CLYPEONISCUS STENETRII u. sp. 



Body of $ irregularly oval, incised anteriorly and posteriorly, 

 lateral margins with irregular shallow indentations. Dorsal surface 

 moderately convex, the opaque area ovoid but indistinctly defined. 

 Ventral surface with a longitudinal slit extending from the anterior 

 to the posterior incisions, its margins with (so far as it was possible 

 to count them) 10 pairs of marginal folds. These do not appear to 

 be double or to interlock as is the case in meinerti. 



A single $ was found attached to the same host, but is not in a 

 good enough state of preservation to allow of the characters of 

 antenna 1, side-plates and peraeopods being observed. The outer 

 ramus of uropod is much shorter than inner. 



32 



