Crustacean Fauna of South Africa. 133 
Stebbing has remarked on the large size to which South African 
specimens grow, in comparison with specimens of the same species 
from other localities. Thus a ¢ specimen of this species from 
“Fresh”? (error = False) Bay measures, according to Stebbing, 
17 mm. 
Another specimen from the “ Pieter Faure” collection (Cape St. 
Blaize N. 42° E., distant 11 miles. 10/6/98. S.A.M. No. A151) 
surpasses this, attaining a length of 21 mm. It is an ovigerous 9, 
and agrees with Stebbing’s ¢ specimen, although both specimens 
have the rami of 3rd uropod much broader and the apices more 
rounded than in Sars’ figures. 
AMPELISCA DIADEMA (Costa). 
1853. Araneops diadema Costa, Rend. Soc. Bourb. n.s., vol. 2, p. tvailte 
1862. Ampelisca gaimardii (part) Bate, Cat. Amphip. Brit. Mus., p. 91. 
1867. i diadema Costa, Ann. Mus. Napoli. vol. 4, p. 45. 
1871. fs assimilis Boeck, Forh. Selsk. Christian. 1870, p. 222. 
1891. me * G. O. Sars, Crust. Norw. vol. 1, p. 168, pl. 58, 
fig. 2. 
1893. PA diadema Della Valle, F. u. Fl. Neapel. vol. 20, p. 479, 
pl. 4, fig. 2, pl. 37, figs. 19, 20, 22-28, 
30-38, pl. 38, figs.§2, 7, 8, 11, 12, 14, 
15, pl. 40, figs. 39, 40, pl, 41, fig. 28, 
pl. 44, figs. 4, 8, 9,411, pl. 45, figs. 17, 
18, pl. 46, figs. 4-6, pl. 47, fig. 29, 
pl. 48, fig. 19. 
1906. $5 5 Stebbing, l.c. p. 107. 
1910. be x Chevreux, Mém. Soc. Zool, Fr. vol. 23, 
p. 181. 
Agrees with the descriptions and figures of Sars and Della Valle, 
except for the following differences: postero-inferior angle of 3rd 
pleon segment in ¢ as figured for ? by Sars, in 9 somewhat more 
quadrate; telson in @ with only 3 marginal setae (in ¢ broken) ; 
flagellum of 1st antenna 35-jointed in ¢, 20 in ? ; ventral hooks on 
peraeon segment 7 very large and prominent, those on segments 0 and 
6 small. 
Length: 8 mm. 
Colour : In spirit, pale pinkish. 
Locality: Kalk Bay (False Bay). 1897. (Dr. W.c{F. Purcell). 
1 specimen at low tide; Port Shepstone WNW., distant 24 miles 
