398 Annals of the South African Museum. 



several denticles on outer, outer ramus a little longer than peduncle, 

 elongate-ovate, apex blunt, inner ramus as long as peduncle and half 

 the width of outer ramus, narrow, apex subacute, apices and outer 

 margin of both rami setose. 



Pleopod 2, rami subequal, elongate-oblong, apices rounded-truncate, 

 setose. 



Locality: Cape Point N. 89 E., distant 36 miles. 700 fathoms. 

 Several < <$ and $ 9 with embryos, s.s. " Pieter Faure." 20/8/03. 

 (S.A.M., No. A4070.) 



Although not remarked upon in my original description, this species 

 bears an extraordinary resemblance to Arcturus myops Beddard (1886, 

 Challeng. Eep. vol. 17, p. 100, pi. 22, figs. 5-8, pi. 25, fig. 8) from 700 

 fathoms off New Zealand. The two species agree in having only low 

 rounded elevations, unpigmented and unfacetted, in place of eyes and 

 in the sculpturing, but are easily distinguished by the shape of the 

 telson. 



. FAMILY STENETRIIDAE. 



1905. Stenetriidae Hanseu, Proc. Zool. Soc. Loud. 1904, vol. 2, pt. 2, 



p. 315. 



GEN. STENETEIUM Haswell. 



1881. Stenetrium Haswell, Proc. Linn. Soc. N.S.W. vol. 5, p. 478. 



1905. Hauseu, I.e. pp. 303, 316. 



1906. Nobili, Mem: Ac. R. Torino, ser. 2, vol. 57, p. 414. 

 1914. Barnard, Ann. S.A. Mus. vol. 10, pt. 7, p. 217. 

 1914. Vanh6ffen, D. Siidpolar Exp. vol. 15, pt. 4, p. 546. 



Up to the present time only one species of this genus has been 

 known from South Africa 8. crassimamis Brnrd. Four additional 

 species are described below, so that the genus is now as well represented 

 in South Africa as in the West Indies. 



Moreover, in examining these latter species, I have become aware 

 of a character which is common to all five species, although I had 

 overlooked its presence in crassimanus namely, a median longitudinal 

 ventral keel on all the peraeou segments in both sexes. There is no 

 mention of such a keel in the descriptions of any of the other species, 

 but it would be scarcely correct to presume its absence, for it may not 

 have been considered important enough for the diagnosis of the species. 

 In the South African species, however, there are slight differences 

 which are enough to separate the species without referring to other 

 characters. 



