SOWERBY : MARINE SHELLS OF SOUTH AFRICA. 157 



Solen pel lucid us Pennant. The specimens found at Port 

 Elizabeth are larger than any British ones I have seen, but 

 in every other respect they are identical. 



Ceratisolen legumen Linn. A young shell in perfect 

 condition, exactly similar to the British. 



Keilia rotunda Deshayes. Nearly allied to the British K. 

 suborbiciilaris. 



Montacuta capensis Sowerby, nov. sp. (Plate iii, fig. 8.) 

 M. testa transverse oblonga, siibtrigoiia, leviter inceqinlateralis, 

 sitb-coiiipressa, te/iinuscula, alba, coucenirice irregulariter 

 rugata, epidermide tenuissiiiia straniinea indiita. Umboncs 

 acutiusculi, approximati. Margo dorsaiis utrinque declivis, 

 "Centralis rectiusculus, utrinque rotundatus. Cardo dentibus 

 duobus elevdtis, subre/jiotis, divergeiitlbus munitus. Liganien- 

 tuni iiiteinum bifurcatuni. 

 Dia/n. antero-post 4^2 mill.; umbono-niarg. j mill. 



Axinus globosus Forskael. 



Saxicava arctica Linn. 



Petricola typica Jonas. 



Venus (Gomphina) undulosa var. 



Venus (Chione) Kraussii Deshayes. 



Cytherea (Tivela) compressa Sowerby. 



Dosinia cretacea Reeve. 



Dosinia lamellata Reeve. 



Tapes rugosa Deshayes. 



Tapes textrix Reeve. 



Cardiunn lima Gmelin (=C. asiaticum Brug.). Only odd 

 valves have at present been found at Port Elizabeth. 



Cardium fasciatum Mont. Larger than British and Medi- 

 terranean specimens. 



Pectunculus arabicus H. Adams. Common in the Red Sea, 

 but rare at Port Elizabeth. 



Area scapha Chemnitz. 



Nucula radiata Forbes and Hanley. Worn valves. This 

 may possibly prove a species distinct from the British, but 



