PELECYPODA. 63 



CARDITA ELATA, Sowerby, n. sp., pi. 3, fig. 67. Testa 

 parva, elata, subtrigona, crassiuscula, alba, concentrice 

 sulcata, cost is 1617, subangulatis, leviter crenatis. Umhones 

 prominentes, incurvi. Lunula parva, excavata. Margo 

 dorsalis posticus valde declivis. Cardo norraalis. Pagina 

 interna alba, margine crenato. 



Diam. antero-post 4, umbono-marg. 5 millim. 



Hab. Port Elizabeth. 



A carious little species, somewhat the form of an Isocardia. 

 I have at present only seen odd valves. 



CARDITELLA CAPENSIS, Smith, Report Lambellib. Voy. 

 Challenger, p. 216, For description of the genus see Proc. 

 Zool. Soc. 1881, p. 42. Simon's Bay. 



CARDITELLA RUGOSA, Soiverby, n. sp., pi. 3, fig. 65.- 

 Testa parva, trapeziformis, albida, fusco sparsim maculata, 

 radiatim costata, costis circ. 16, rugosis, interstitiis profundis. 

 Urabont-s vix elevati, obtusi, approxirnati. Lunula elongata, 

 impressa. Pagina interna fusca, margine fimbriato. 



Diam. antero-post 6, umbono-marg. 4^ millim. 



A little, roughly ribbed, trapeziforin species. 



NKOCARDIA, Sowerby, gen. nov. Testa seq nival vis, valde 

 inaequilateralis, extus cancellata, cardine angusto, obsolete 

 bidentato, dente laterali postico elongate duplicate, margine 

 antico edentulo. 



NEOCARDIA ANGULATA, Sowerby, n. sp , pi. 3, fig. 66. 

 Testa parva, sub-mytiliformis, postice angulata, antice rotun- 

 data, albida, fusco-tincta, concentrice dense regulariter et 

 profunde sulcata, radiatim costata, costis circ. 12 angustis, 

 parum elevatis, leviter nodulosis. Umbones prominentes, 

 acuti. Pagina interna obscure radiatim sulcata, plus minusve 

 fusco-tincta. 



Diam. antero-post 4^-, umbono-marg. 4 millim. 



Hab. Port Elizabeth. 



A remarkable little shell of distinct form and peculiarly 

 cancellated sculpture. The cardinal teeth are scarcely 

 visible, and there is only one elongated lateral tooth, which 

 is on the posterior side of the hinge, the anterior being plain. 



MYTILUS CRENATUS, Lamarck, Encyclo. Method, pi. 217, 

 fig. 3 ; Sowerby's Genera of Shells, fig. 5. = M. capenns 

 (Dunker). Port Elizabeth. 



