| OCR Text |
Show 38-1 DR. H. L. JAMESON ON THE [Apr. 16, Species 9. MARGARITIFERA ATROPURPUREA. Avicula atropurpurea, Dunker, 1852, p. 70 ; loc. incogn. Avicula (Meleagrina) atropurpurea, Dunker, 1872, p. 14, tab. 3. fig. 3. Species 10. MARGARITIFERA ANOMIOILES. Avicula anomioides, Reeve, 1857, sp. 26 ; loc. incogn. Tvpe in Brit. Mus. - M. vulgaris, fide Cooke, 1886. A young shell, apparently distinct. Young shells from Baza-ruto Island (Ponsonby Coll. Brit. Mus.) resemble this form. Dunker suggests that this species and also M. crocata Swainson may be his M. cilrina. Species 11. MARGARITIFERA SCHEEPMAKERI. Avicula (Meleagrina) scheepmakeri, Dunker, 1872, p. 6, tab. 1. fig. 1 ; loc. incogn; probably = M. sugillata, Reeve. Species 12. MARGARITIFERA TRISTIS. Avicula (Meleagrina) tristis, Dunker, 1872, p. 44, tab. 14. fig. 3 ; loc. incogn. Section c. Teeth much more strongly developed, than in Section b. Shell somewhat oblique; longest dorso-ventral axis directed slightly backward; very convex, inequivalve, with well-marked posterior process of the hinge and distinct sinus in posterior margin. In this section, which comprises the shells known as " Lingah " in the trade, there is a general approach towards the typical Pteria s. s. form, in the sharp separation of the hinge from the valves by anterior and posterior marginal notches, in the convexity and slight obliquity of the shell, and the well-marked anterior and lateral teeth. Species 13. MARGARITIFERA VULGARIS. Perlamater vulgaris, Schumacher, 1817. p. 108, pi. xx. fig. 8 ; no loc. Chemnitz, 1785, tab. 80. fig. 717 (referred to by Schumacher as a second figure of his P. vulgaris). Avicula fucata, Gould, 1850, p. 309; 1852, p. 441, pi. 39. fig. 551 ; N e w Zealand. Avicula fucata, Reeve, 1857, sp. 74 ; Japan. Type in B.M. Avicula occa, Reeve, 1857, sp. 24 ; Red Sea. Type in B.M. Avicula aerata, Reeve, 1857, sp. 32 ; Australia. Type in B.M. Avicula perviridis, Reeve, 1857, sp. 20 ; Australia. Type in B.M. Avicula (Meleagrina) varia, Dunker, 1872, p. 17, tab. 4. fig. 6 ; Red Sea. |
