SOWERBY: MARINE SHELLS OF SOUTH AFRICA. 375 



much from the typical forms, and chiefly in the equality of 

 the valves. The hinge, however, is that of a Patidora, 

 although the club-shaped tooth is much more prominent 

 than in any other species with which I am acquainted. 

 The oblique ridge holding the ligament is similar to that of 

 P. claviculata Carpenter. 

 Raeta pellicula Deshayes. — Reeve, 'Conch. Icon.,' Madra, 

 pi. 21, fig. 124. A single valve from Durban. 



Semele cordiformis Chemnitz. — Reeve, 'Conch. Icon.,' 



AmphidesJiia, pi. 5, fig. 30. Natal. 



Psammobia burnupi Sowb., n. sp. 



Testa oblonga, ccquivalis, incequilateralis, phimdata^ antice 

 rotuiidat'j, postice iri/ficafa, jcbiqiie concentrice striata, luteo- 

 fitsco tiiuta, fasciis fuscis irregidariter /lotata, H?ieis fiiscis 

 ininutis divergentibjis veinfon/iibus pitta ; umbones acuti, 

 hand prominentes ; maigo dorsalis aiiticus lojigus, leviter 

 curvatus ; aniiciis airtus leviter declivis, obtuse aiignlatus ; 

 margo ventralis rediiisciihis ajiticus rotwidatus, posticus ob- 

 tuse atigidatus ; ligameniuin externum, inediocriter longum ; 

 cardo uormaiis ; pagina interna saturate purp2irea. 



Antero-post. 28, unibono-marg. 14 nnllim. 



Hab. Natal {Burnup). 



Var. fi — sordide lutea, obscure radiata ; pagina interna albida 

 pallide luteo-fusco tincta. 



Tellina dispar Conrad, — Sowb.,'Thes. Conch.,' vol. i., p. 306, 

 pi. 59, fig. 108. Natal. 



Tellina virgata Linn.— Sowb,, 'Thes. Conch., vol. i., p. 228, 



pi. 63, fig. 212. Natal. 

 Tellina rastellum Hanley. — Sowb., 'Thes. Conch.,' vol. i., 



p. 225, pi. 64, fig. 231. Natal. 



Tellina (Macoma) candidata Sowb., n. sp. 



Testa sub-oblique ovalis, cequivalvis, incequilateralis, leviter in- 

 flata, alba, glabra, nitens. Umbones acutiuscidi, leviter 

 prominentes, conjuncti. Margo dorsalis utrinque declivis ; 

 anticus longiiiscidus ; posticus brevior, viajis declivis. Margo 

 ventralis leviter arcuatus. Latus anticum rotundatum ; posti- 

 cum obtuse biangidatuui. 



