1867.] TATE SOUTH- AFRICAN- FOSSILS. 153 



Dimens. Length of longer diameter 2-8 millimetres ; shorter dia- 

 meter 2*1 mill. ; height -9 mill. 



Log. In a reddish shell-rock, Prince Alfred's Eest ? (Euhidge). 



Chemnitzia Aericaka, sp. nov. 



Shell subulate, turreted; apex acute; whorls 9, very slightly 

 constricted in their upper part ; the longitudinal ribs, of which there 

 are about twenty in a volution, arise from tubercles ; the ribs are 

 depressed and smooth, and become broader inferiorly. Suture deeply 

 impressed ; aperture elliptical. 



Length 7 lines. 



This species is allied to Oh, (2) vetusta of the Great Oolite of England. 



Log. The specimen, which is unique, was obtained from the 

 Zwartkop Eiver. 



Turbo Stowianus, spec. nov. 



Shell turbinated, whorls convex ; upper half of each whorl en- 

 circled by six bluntly acute ribs, alternating with similar smaller 

 ones ; lower half with the same ornamentation. Aperture round. 

 Axis imperforate. 



Dimens. Length 1-35 mill., breadth '46 mill. 



T. iStowianus is related to T. Bainii, Sharpe. 



Log. Two specimens were collected by Dr. Eubidge at Prince Al- 

 fred's Eest. 



Ampullabia ? iGNOBiLis, spec. nov. 



*f Ampullaria ?, undetermined," Sharpe, Trans. Geol. Soc. 2ndser. 

 vol. vii. p. 203 k p. 232, pi. 28. fig. 21. 



Shell very minute, globular, apex subacute, spire very short, com- 

 posed of 3 inflated whorls, last whorl almost enveloping the spire. 

 Mouth oval. 



Log. Lowest strata of the Zwartkop Crag. 



Phasianella ? Sharpei, spec. nov. 



" Natica, undetermined," Sharpe, Iog. cit. pi. 28. figs. 2, 3. 



Shell very minute, ovate, globose ; spire short ; whorls 3, narrow, 

 convex ; last whorl large ; aperture large and round. 



Log. Lowest strata of the Zwartkop Crag ; and Sunday's Eiver. 



ACT^ONINA MORRISIANA, SpCC. UOV. 



" Ampullaria ?, undetermined." Sharpe, he. Git. pi. 28. fig. 20. 



SheU. very minute, ovate, cylindrical, apex acute; spire short, 

 conical, composed of four cjdindricaL whorls, the last of which occu- 

 pies i^ of the whole length of the shell; aperture ovate-oblong, 

 rounded in front, acute behind. 



The species is named in compliment to Prof. J. Morris, F.G.S. 



Log. Lowest strata of the Zwartkop Crag. 



