AMPELISCIDAE 85 



but larger than those figured by Schellenberg for intermedia (Joe. cit., p. 132, fig. 9). No 

 ocular pigment remaining in the preserved specimens. 



To my mind the southern form should be specifically separated from the northern form . 



Distribution (Southern form). South Africa (False Bay and Agulhas Bank); West 

 coast of Africa. Also East Africa (Schellenberg). 



Ampelisca palmata, Brnrd. 



Barnard, 1916, p. 136, pi. xxviii, figs. 30, 31. 

 Schellenberg, 1925, p. 127. 



Occurrence: 1. Walvis Bay. 12. ix. 26. From stomach of Trigla capensis. Twenty-four specimens 

 5-8 mm. 

 2. St. 90. South Africa. 1 ovig. $ 8 mm. 



Remarks. Schellenberg is quite right about the slight variations from the typical 

 form as originally described. The 2nd joint of peraeopod 5 is not always so distinctly 

 truncate below as figured, and the palm is less marked and carries fewer spines. Of the 

 two original specimens one has a very distinct palm as figured, the other approaches 

 more to spinimana. I should be quite prepared to sink the species in spinimana but that 

 Schellenberg has distinguished both species from the same localities (Senegal and 

 French Congo). 



The sealing-wax red ocular pigment is very distinct in the preserved specimens. 



Distribution. South and west coasts of Africa up to Senegal. 



Genus Byblis, Boeck. 

 Stebbing, 1906, pp. m, 722; 1908 (Ann. S. Afr. Mus. vi), p. 71. 



Byblis antarctica Schell. (Fig. 40). 

 Schellenberg, 193 1, p. 59, fig. 31. 

 Occurrence: St. 170. South Shetlands. 5 $$ (4 ovig.) 14-16 mm. 



Description. Integument smooth, shining. Head, peraeon and pleon dorsally 

 rounded. Head with very short rostral point; post-antennal angle very obtuse. No 

 corneal lenses ; no ocular pigment (as preserved). Side-plate 1 expanded below, broadly 

 rounded (as in Haploops tubicola), setose; 2 shallower than 1, subfalcate, with a semi- 

 circular excision on distal half of anterior margin ; 3 as deep as 2, its distal anterior margin 

 straight or slightly emarginate ; 4 almost as deep as long, slightly but distinctly shallower 

 than 3 . Postero-inferior angle of pleon segment 3 broadly rounded. Pleon segment 4 with 

 dorsal depression followed by a rounded hump ; segment 6 raised in a smooth angular 

 hump above base of telson. Telson subsemicircular, at base nearly twice as broad as 

 long, cleft for half its length, lobes not dehiscent, slightly emarginate on outer distal 

 margin, where a stout spine and a seta are inserted. 



Antenna 1 extending back to about 4th peraeon segment, flagellum 17-jointed, 2nd 

 and 3rd peduncular joints and flagellum with long setae. Antenna 2 about as long as 

 antenna 1, flagellum 12-jointed, 4th and 5th peduncular joints and flagellum with long 

 setae. Mandibular palp slender, 3rd joint two-thirds length of 2nd. 



