87 

 FOUR NEW MARINE SPECIES FROM SOUTH AFRICA. 



By J. R. Lk B. TOMLIN, M.A. 



(Read before the Society, December lo, 1919). 



Eullia tenuistriata sp. nov. (f. j). 



Shell elongate-conic, cream-coloured or whitish ; whorls about 

 seven in number, increasing rapidly, with a protoconch of two 

 glassy, semitransparent and apparently quite smooth whorls ; the 

 other whorls are marked by close, equal, and equally-sj)aced spiral 

 ribs, of which there are seventeen on the penultimate whorl of the 

 type, and about fifteen on each of the two preceding ones ; inter- 

 stices between the ribs smooth ; sutures strongly marked and 

 deeply impressed ; aperture elongate oval, channelled anteriorly. 

 Length, 16-5 mm. ; diam. max., 6.5 mm. 



Length of aperture, 6'5 mm. 



Hab., Port Alfred (two specimens). 



Type, in coll. Turton. 



In general appearance this shell bears some slight resemblance 

 to /'//ra Melvill, but is easily separated from all South African 

 Bullias by the sutures, which give it almost a scalariform appear- 

 ance. 



Columbella apicibulbus sp. nov. (f. 2). 



Shell minute, cylindrical, whitish, transparent, with traces of fine 

 axial hair-like lines under a high power ; whorls 4},, with a curious 

 bulbous protoconch, the fourth whorl from the base being much 

 "dilated ; sutures moderately impressed and marked by a white 

 line ; aperture very narrow and almost wedge-shaped ; last whorl 

 very slightly broader than the rest of the shell, which is very nearly 

 of equal breadth throughout ; columella and anterior end of shell 

 sharply truncate. Length, 2 mm. ; diam. max., cS mm. 



Hab., Port Alfred (two specimens). 



Type, in coll. Turton. 



The protoconch reminds one in miniature of that of l^o/n/a 

 mainiUa (Iray. 



Cylichnella bistriata sp. nov. (f i). 



Shell white, cylindrical throughout, with spire submerged ; apex 

 concave, with two strongly incised spiral lines encircling it outside; 

 there are also traces of distant spiral sculpture on the body whorl, 

 which become distinct at the anterior end ; aperture narrow ; outer 



S, 



