Mr. D, Sharpe on Palceozoic Fossils from South Africa. 213 



Having only seen the impression of one pair of valves, a cast of which is figured, 

 I must leave the genus doubtful. 



Modiolopsis ? Bainii, Sharpe. PI. XXVII. fig. 9. 



M.? testa^ subrhomboidali : umbonibus anterioribus : caring depresso-rotundata, ab urabone ad 

 marginem ventrali-posteriorem, valvam transverse dimidiante : extremitate anteriore truncato- 

 abbreviata ; posteriore lata, declivi. 



Shell nearly rhomboidal : beaks close to the anterior end : each valve divided 

 into two nearly equal portions by a rounded ridge which reaches from the beak to 

 the ventral-posterior margin : anterior end very short and truncated ; posterior 

 end broad and sloping away from the central ridge. 



Length 1 inch ; breadth 2 inches ; thickness |ths of an inch. 



As the generic characters of this shell cannot be seen in the only specimen in 

 the collection, it is placed in the genus Modiolopsis, with which its general form 

 corresponds. The cast shows some traces of concentric lines of growth over the 

 whole valve, and of several lines radiating backwards from the beak over the 

 anterior portion. 



Found at Leo Hoek. 



Anodontopsis ? rudis, Sharpe. PI. XXVII. fig. 10. 



A.? testa subquadrata, antice umbonem versus subtruncata, medio depressa, concentrice 

 corrugato-lineata : umbonibus medianis. 



Shell nearly square : beaks central : anterior side slightly truncated near the 

 beak : posterior side nearly straight : a sUght depression down the middle of each 

 valve, reaching to the ventral margin : valves wrinkled with irregular concentric 

 lines of growth. 



Length If inch ; breadth If inch ; thickness fths of an inch. 



Found at Leo Hoek. 



The collection only contains an imperfect specimen of this species, which does 

 not exhibit any characters by which its genus can be correctly ascertained. 



Littorina ? Bainii, Sharpe. Plate XXVII. figs. 11 & 12. 



L. ? testa heliciformi : anfractibus paucis, rotundatis, transversim rugosis : apertura rotun- 

 data, superne angulata. 



Shell heliciform ; whorls few, rounded, and transversely wrinkled ; aperture 

 angular above, rounded beneath. 

 Largest diameter 1 inch. 



Found at Gydow Pass, in dark-coloured schists and nodules. 

 Fig. 1 1, a cast, somewhat restored ; fig. 12, fragment of a cast. 



