SOWERBY : MARINE SHELLS OF S. AFRICA. 1 3 



A dead white shell, ribbed like Rissoa sifniHs, with a very 



long turreted spire. A single specimen submitted to me by 



Mr. Ponsonby. 



Tornatina soluta Quoy and Gaimard. 



Philine aperta Linn. — Scarcely distinguishable from British 

 specimens. 



Haminea Natalensis Sowerby. 



Hydatina physis Linn. 



Aplysia punctata Cuvier. 



Siphonaria aspera Krauss. 



Siphonaria capensis Krauss. 



Siphonaria Natalensis Krauss. 



Siphonaria variabilis Krauss. 



Mactra decora Deshayes. — The specimen submitted to me 

 by Mr. Ponsonby from Port Elizabeth differs somewhat 

 from the Red Sea and Indian Ocean specimens ; but the 

 difference is scarcely sufficient to found a species. 



Tellina cumana Hanky. — Scarcely differing from Mediter- 

 ranean specimens. 



Tellina rosea Spengler.^-A fine characteristic species, 

 apparently belonging exclusively to the South African 

 fauna. 



Tellina orbicularis n. sp. — Testa suh-orhicularis, solidiuscula, 

 (Equivalvis, sub-cequilatera, leviter inflata., albida, prope 

 umbones luteo tinda, concentrice irregulariter striata : 

 margine antico semicircutari, margi7te postico trimcato ; 

 valva si?iistra postice sinuatiju depressa^ dextra sinuati?fi 

 elevata ; utnbones leviter projninentes, approximati. 



Diam. antero-post. 50, umbono marg. 45 ;;////. 



A species of nearly circular form, posteriorly sinuated. A 



single specimen in perfect condition from Port Elizabeth. 



Psammoteliina capensis n. sp. — Testa oblonga compressa 

 utrinque rotundata, tenuissima, pellucida, fusco cornea, 

 purpurea-fusco tincta et radiata; umbonibus viinutis, acutis 

 approximaiis ; viargo dorsalis anticus brevis, declivis, 



