Contributions to the Crustacean Fauna of South Africa. 219 



Third pleopod as figured by Hansen. 



Fourth pleopod. Hansen in his description of the genus Stene- 

 trium, loc. cit. p. 305, says : "... a two-jointed exopod, which is 

 slightly longer and somewhat broader than the unjointed en- 

 dopod. . . ." This conflicts somewhat with his figure, pi. xx. 

 fig. 2fc. Stebbing describes and figures the exopod of the fourth 

 pleopod of S. chiltoni as narrower than the endopod, and this 

 is also the case in the present species. 



Fifth pleopod, short and broad, distal end obliquely truncate, 

 apex setulose. 



Uropod, peduncle shorter than rami, of which the inner is rather 

 longer than the outer, apical setae long and slightly plumose, the 

 others shorter and simple. 



Length : 7 mm. ; breadth : 2 mm. Second antennae: 5 mm. 



Colour: Greyish white, peraeon with faint indications of a darker 

 median line, most marked on the last three segments. 



Locality : St. James, False Bay, under rocks, low tide. 29/4/12. 

 (Coll. K.H.B.) One $ , one ? with ova. (S.A.M. No. A2261.) 



The distribution of the genus is cosmopolitan, species having 

 been recorded from shallow water in New Zealand, Australia, Siam, 

 Ceylon, the West Indies, and the " Challenger " obtained a deep- 

 water form off the Eio de la Plata in S. America. With the possible 

 exception of S. mediterraneum, Hansen, 1905, which Eichardson, 

 1910, says is synonymous with Jaera longicornis, the genus seems 

 absent from European waters. 



FAMILY JAERIDAE. 



1897. laniridae, G. 0. Sars, Crust. Norw. ii. p. 98. 



1905. Parascllidae (part), Hansen, Proc. Zool. Soc. Lond. 1904, ii. 



pt. 2, p. 315. 

 1905. Janiridae, Stebbing, in Herdman's Ceylon Pearl Fish. Suppl. 



Eep. 23, p. 48. 



1905. Eichardson, Bull. U.S. Nat. Mus. No. 54, p. 448. 



1910. Jaeridae, Stebbing, J. Linn. Soc. Lond. vol. 31, p. 224. 



GEN. JANIEA, Leach. 



1814. Janira, Leach, Edinb. Encycl. vii. p. 434. 



1829. Oniscoda, Latrielle, Cuv. Eegne Anim. 2nd ed. iv. p. 141. 

 1840. M. Edwards, Hist. Nat. Crust, hi. p. 151. 



1847. Henopomus, Kroyer, Naturh. Tidskr. (2) ii. p. 366. 



