257 



Distribution: — C. {T.) costellifera is widely distributed in the Indo-Pacific Région, and 

 has also been recorded from the Red Sea and the Persian Gulf. 



In the "Siboga" collection there are two shells of this species dredged at Sailus Ketjil, 

 Paternoster Islands (St. 37) and Banda Anchorage (St. 240, 9 — 45 mètres). 



7. Chio7ie {Tnnocled) scabra (Hanley). 



1844. Venus scabra Hanley, Proc. Zool. Soc. London, p. 161. 



1853. Venus scabra Sowerby, Thés. Conch., II, p. 718, pi. CLVII, figs. loi — 102. 



1853. Cliione scabra Deshayes, Cat. Conch. Brit. Mus., I, Veneridae, p. 130. 



1856. Venus scabra Hanley, Rec. Biv. Shells, Appendix, p. 361, pi. XVI, fig. 24. 



1857. Chione scabra Adams, H. & A., Gen. Rec. Moll., II, p. 421. 

 1860. Venus scabra Reeve, Elem. Conch., II, p. iio. 



1863. Venus scabra Reeve, Conch. Icon., XIV, Venus, pi. XXI, figs. 97*^, b. 



1867. Venus [Chione-Oviplialoclathrunï) scabra Romer, Malakozool. Blàtt., XIV, p. 58. 



1884. Venus scabra Grasset, Ind. Test. Viv., p. 262. 



1885. Venus [Chione) scabra Smith, "Challenger" Lamellibranchia, p. 124. 



1887. Venus [Timocleà] scabra von Martens, Journ. Linn. Soc. London (Zool.), XXI, p. 212. 

 1890. Chione [Oinphaloclathruin) scabra Paetel, Cat. Conch. Samm., III, p. 87. 



1895. Chione scabra Pilsbry, Cat. Mar. Moll. Japan, p. 128. 



1896. Chione scabra Casto de Elera, Cat. Sist. Filip., p. 757. 



1898. Chione [Omphaloclathrimi) scabra Melvill & Standen, Journ. Conch., IX, p. 83. 



1903. Chione scabra Hidalgo, Obras Malacol., II, p. 302. 



1905. Chione micra Pilsbry, Proc. Acad. Nat. Se. Philadelphia, LVI, p. 552, pi. XLI, figs. 4, 5. 



1905. Chione scabra Hidalgo, Cat. Filip., p. 339. 



1906. Chione scabra Melvill & Standen, Proc. Zool. Soc. London, p. 835. 

 1906. Chione scabra Hedley, Proc. Linn. Soc. N. S. Wales, XXXI, p. 466. 

 1906. Chione scabra Owston, Japan. Loochooan Shells, p. 39. 



1906. Venus [Chione) scabra Dautzenberg, P. & Fischer, H., Journ. Conchyliol., LIV, p. 217. 



1909. Ventes [Chione) scabra Melvill, Trans. Linn. Soc. London (Zool.), XIII, p. 133. 



1909. Venus [Cliione) scabra Lamy, Bull. Mus. d'Hist. Nat. Paris, XV, p. 468. 



1910. Chione scabra Hedley, Austral. Ass. Adv. Sci., XII. p. 349. 



1918. Antigona scabra Hedley, Journ. Proc. Roy. Soc. N. S. Wales, LI, p. M. 23. 

 1928. Venus [Chione) scabra Faustino, Summary Philippine Mar. Freshw. Moll., p. 72. 



The "Siboga" shells, which I refer to C. [T.) scabra, agrée with the type-shells of this 

 species from the Philippines in the British Muséum (Nat. Hist.), London. The shells vary in 

 référence to the numbers of the radial and concentric ridges on the surface, but in gênerai 

 conform to the type-shells. 



Distribution: — C. [T.) scabra has a wide range in the Indo-Pacific, and has also been 

 recorded from the Persian Gulf. 



In the "Siboga" collection the species is represented from the Anchorage off Djangkar 

 (St. 4), Macassar (St. 71) and Lohio Bay, Buton Strait (St. 205). 



8. Chione [Tùnoclea) crassisquamata sp. nov. (Plate VI, figs. 23, 24). 



Chione [Timocleci) crassisqziainata is very closely allied to C [T.) imbricata (Sowerby)^), 

 but the shell of the new species is much more triangular, more elongate, and neither so high 



i) SovviiRBY, G. B. — Thés. Conch., II, p. 715, pi. CLVI, figs. 81, 82 (1853). Also see Reeve, L., Conch. Icon., XIV, Veiius^ 

 pi. XXIV, fig. 118 (1864). 



SIBOGA-EXPEDITIE LIIIC. 33 



