. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. CONTRIBUTIONS TO THE KNOWLEDGE OF MARINE MOLLUSCA 393 Modiolus philippinarum Hartley Fig. 6 a Modiola philippinarum Hanley, 1844, p. 15; 1845, p. 235, pi. 24, fig. 26; Odhner, 1919, pp. 6, 25; Dautzenberg, 1929, p. 572; Prashad, 1932, p. 72, pi. 2, figs. 25, 26; Lamy, 1936, p. 284; Cox, 1939, p. 73, pi. 1, fig. 6; Braga, 1952, p. 101, pi. 8, fig. 3; Macnae & Kalk, 1958, PP- 43> !29> %• 23</. Modiola lignea (non Reeve), Sowerby, 1892, p. 64; Johnson, 1904, p. 11; Bartsch, 1915, p. 18
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. CONTRIBUTIONS TO THE KNOWLEDGE OF MARINE MOLLUSCA 393 Modiolus philippinarum Hartley Fig. 6 a Modiola philippinarum Hanley, 1844, p. 15; 1845, p. 235, pi. 24, fig. 26; Odhner, 1919, pp. 6, 25; Dautzenberg, 1929, p. 572; Prashad, 1932, p. 72, pi. 2, figs. 25, 26; Lamy, 1936, p. 284; Cox, 1939, p. 73, pi. 1, fig. 6; Braga, 1952, p. 101, pi. 8, fig. 3; Macnae & Kalk, 1958, PP- 43> !29> %• 23</. Modiola lignea (non Reeve), Sowerby, 1892, p. 64; Johnson, 1904, p. 11; Bartsch, 1915, p. 189; Turton, 1932, p. 227. A large specimen identified by Tomlin: greatest length 87 mm., hinge-line c. 44 mm. More oblique than sirahensis, especially when old; hind margin convex, hinge-line approximately one half the total length. Fossil: Miocene, Inhambane (Cox); Pleistocene, Port Elizabeth (Johnson) (sed?).. Fig. 6. a, Modiolus philippinarum Hanley. b, M. sirahensis Jouss. c, M. auriculatus Krss., three variations in shape (arrow in largest shell points to position of anterior retractor scar). d, perio- stracum hair. Natal (sed?) juveniles 14-30 mm. (S. Afr. Mus.); Delagoa Bay (S. Afr. Mus. adult coll. ; also Braga; also ). Distribution. Red Sea, Madagascar, Indo-Pacific. Remarks. Juvenile shells, 11 mm. long, from 330 03' S., 270 55' E., 27 metres (), and 4-5 mm. long from False Bay () correspond in shape with the growth-lines on the larger juveniles (14-30 mm.) and the adult specimen recorded above. They are glossy bright brown in colour. Sowerby (1892), Johnson, Bartsch, and Turton recorded the Australian lignea Rve. from Port Elizabeth and Port Alfred. The 'dark brown, very shiny shells' (Turton) are more likely to be the juveniles of philippinarum. Septifer bilocularis (Linn.) Fig. 7 a, b Tichogonia kraussi (Kien.), Krauss, 1848, p. 26. Septifer kraussii (Kien.), Turton, 1932, p. 227. Septifer nicobaricus Sowerby, 1897, p. Please note that t
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