SOUTH AFRICAN MARINE MOLLUSCA. 213 



only a young shell. Another example from Durban was 51 mm. 

 long, 55 high (umbo to lower margin), and 16 in diameter. 



Chlamys natalensis Smifh. 



Chlamys natalensis SmiUi, 'Ann. Natal. Clov. Mus./ 

 vol. i, p. 60, PI. VIII, figs. 7-Sa. 



Hab. — Durban (McBean and Burnup). 



A pretty, orange coloured variety was obtained by Mr. 

 Burnup. 



Vulsella vulsella {LinJi.) . 



My a vulsella Linn., ' Syst. Nat.,' ed. 12, p. 1113. 



Vulsella lingulata LamarcJi, 'Hist. Nat. Anim. S. Vert.,' 

 ed. 2, p. 267 ; Reeve, ' Conch. Icon.,' vol. xi, fig. 6 ; Clessin, 

 'Conch. Cab.,' Malleacea, p. 17, PI. V, fig. 4. 



Hab. — Tongaat, Natal (H. Burnup) ; Port Essington, 

 North Australia (Brit. Mus.) ; Queensland (Hedley) ; Red Sea 

 (Reeve) ; Indian Ocean (Lamarck). 



Only a single abnormal specimen was sent from Tongaat. 

 It is a small shell, 35 mm. in length, of irregular growth, and 

 peculiar on account of the great divergence of the umbones 

 from one another, leaving enormous ligamental areas. I do 

 not doubt, however, that it belongs to this species, as it 

 presents the characteristic brown lines which often run in 

 pairs or threes. 



Melina perna [Linn.). 



Ostrea perna Linn. ; Hanley, ' Ipsa Linn. Conch.,' p. 117, 

 PL II, fig. 7. 



Perna sulcata Lamh.; Hanley, 'Recent Bivalve Shells,' 

 p. 258. 



Perna (Isognomon) samoensis Bainl, in Brenchley's 

 ' Cruise of the Cura^oa,' p. 454, PI. XLII, fig. 8. 



Hab . — Scottbui-gh (H. Burnup) ; Samoa Is. (Baird) ; Keeling 

 Is. (Brit. Mus.). 



