110 Annals of the South African Museum. 
Acontiostoma marionis Stebb. (including A. magellanicwm Stebb.), in 
the shape of the lst side-plate. This is triangular, not oblong, and 
narrows below to a somewhat blunt point. The whole surface is finely 
pubescent, and the inferior and posterior margins ofthe side-plates are 
more setulose than in S. pepinit. Peduncular joints of Ist antennae 
progressively shorter, flagellum inserted obliquely, 4-jointed. Second 
antenna as figured for S. pepinii. First maxilla apparently without 
palp; 4th palpal joint of maxilliped quite rudimentary. Finger of 
2nd gnathopod inserted in the middle of the distal margin of 6th 
joint, 7.e. the apices of this joint are produced equally above and 
below the finger. Postero-inferior apex of 2nd joint of 5th peraeopod 
rectangular, with a small indent just above the apex on the posterior 
margin. Posterior margins of 2nd joimts of 35rd—5th peraeopods 
strongly setulose. 
In*other respects agreeing with S. pepinii. The specimen is not 
full-grown, as shown by the new integument forming within the old. 
Length : 2°5 mm. in contracted position. 
Colour. In spirit, pale pinkish, eyes reddish. 
Locality: False Bay. 24 fathoms. 1 immature specimen. 
s.s. “ Pieter Faure.” 11/11/02. (S.A.M. No. A8815.) 
Gen. EUONYX Norman. 
1867. Huonyx Norman, Rep. Brit. Ass. vol. 36, pp. 197, 202. 
Wetstek, ap Stebbing, Challeng. Rep. vol. 29, p. 668. 
1891. ~ G. O. Sars, Crust Norw. vol. 1, p. 116. 
1906. BF Stebbing, Das Tierreich 21, p. 19. 
1908. ¥ Chevreux, Bull. ’Inst. Océan. Monaco. no. 117, p. 1. 
EUONYX BISCAYENSIS Chevreux. 
1908. Huonyx biscayensis Chevreux, Le. p. 1, fig. 1. 
Eyes invisible in the spirit specimen. 
Fourth pleon segment with a basal depression, the posterior portion 
slightly swollen, rounded. 
First antenna equal to first two peraeon segments together, 1st joint 
with anterior margin slightly emarginate, but not apically produced, 
flagellum 12-jointed, 1st joint equal to peduncle, accessory flagellum 
5-jointed, Ist joint equal to the remaining 4 joints. 
Second antenna equal to first 3 peraeon segments together, Ist joint 
dilated below, gland-cone subacute and extending almost to end of 
