Crustacean Fauna of South Africa. 133 



Stebbing has remarked 011 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 K 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 ? , 

 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. 171. 



1862. Ampelisca gaimardii (part) Bate, Cat. Aniphip. Brit, Mus., p. 91. 



1867. ,, diadema Costa, Ann. Mus. Napoli. vol. 4, p. 45. 



1871. assimilis Boeck, Forh. Selsk. Christian. 1870, p. 222. 



1891. G-. O. Sars, Crust, Norw. vol. 1, p. 168, pi. 58, 



fig. 2. 



1893. diadema Delia Valle, F. u. Fl. Neapel. vol. 20, p. 479, 



pi. 4, fig. 2, pi. 37, figs. 19, 20, 22-28, 

 30-38, pi. 38, figs.* 2, 7, 8, 11, 12, 14, 

 15, pi. 40, figs. 59, 40, pi, 41, fig. 23, 

 pi. 44, figf?. 4, 8, 9, '11, pi. 45, figs. 17, 

 18, pi. 46, figs. 4-6, pi. 47, fig. 29, 

 pi. 48, fig. 19. 



1906. Stebbing, I.e. p. 107. 



1910. Chevreux, Mem. Soc. Zool. Fr. vol. 23, 



p. 181. 



Agrees with the descriptions and figures of Sars and Delia Valle, 

 except for the following differences : postero-iuferior angle of 3rd 

 pleon segment in $ as figured for ? by Sars, in ? 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 5 and 

 6 small. 



Length : 8 mm. 



Colour : In spirit, pale pinkish. 



Locality: Kalk Bay (False Bay). 1897. (Dr. W.'F. Purcell). 

 1 specimen at low tide; Port Shepstone WNW., distant 2| miles 



