130 



1856. Mytilus [Ostrea] hyotis Hanley in Wood, Ind. Test., p. 66, pi. XII, fig. 2. 



1856. Ostrea Hyotis Hanley, Rec. Biv. Shells, p. 30S. 



1858. Ostrea [Alectryonia] hyotis Adams, H. & A., Gen. Rec. Moll., II, p. 569. 



1860. Ostrea hyotis Reeve, Elem. Conch., II, p. 52. 



1869. Ostrea [Loplia) hyotis Dunker, Cat. Mus. Godeffroy, IV, p. 116. 



1869. Lopha hyotis Frauenfeld, Verhandl. Zool.-Bot. Ges. Wien, XIX, p. 888. 



1870. Ostraea hyotis Sowerby in Reeve, Conch. Icon., XVIII, Ostraea, pi. IV, fig. 7. 



1871. Ostraea nobilis Sowerby, op. cit., pi. XXXII, fig. 81. 



1877. Ostrea hyotis de Man, Rech. Faun. Madagascar, V (3), Moll., p. 10. 



1880. Ostrea [Alectryonia) hyotis von Martens, Mobius Beitràge Meeresf. Mauritius, Seychell, p. 312. 



1882. Lopha hyotis de Rochebrune, Bull. Soc. Philomat. Paris, (7), VI, p. 99. 



1884. Ostrea hyotis Grasset, Ind. Test. Viv., p. 313. 



1890. Ostrea [Lopha) hyotis Paetel, Cat. Conch. Samm., III, p. 247. 



1891. Ostrea hyotis Fischer, P., Bull. Soc. Nat. Hist. d'Autun, IV, p. 207. 



1895. Ostrea hyotis Pilsbry, Cat. Mar. Moll. Japan, p. 146. 



1896. Alectryonia Jiyotis Casto de Elera, Cat. Sist. Filip., p. 816. 

 1902. Ostrea hyotis Shopland, Proc. Malacol. Soc. London, V, p. 179. 



1905. Ostrea hyotis Hidalgo, Cat. Filip., p. 387. 



1906. Ostrea Jiyotis Owston, japan. Loochooan Shells, p. 34. 



1906. Ostrea [Lopha) hyotis Standen & Leicester, Ceylon Pearl Oyster Rept., V, p. 288. 



1909. Ostrea hyotis Lynge, D. Kgl. Dansk. Vidensk. Selsk. Skr. Nat. -Math., (7) V, p. 161. 



1909. Ostrea hyotis Melvill, Trans. Linn. Soc. London (Zool.), XII, p. 125. 



1913 — 15. Ostrea Iiyotis Suter, Man. New Zealand Moll., p. 889, pi. LVII, fig. 2. 



1917. Ostrea hyotis Odhner, Kungl. Sv. Akad. Handl., LU, n". 16, p. 7. 



1919. Ostrea hyotis Odhner, Arkiv. Zool, XII, n". 6, p. 5. 



1924. Ostrea hyotis Lamy, Bull. Mus. d'Hist. Nat. Paris, XXX, p. 317. 



1925. Ostrea hyotis Lamy, Bull. Mus. d'Hist. Nat. Paris, XXXI, p. 256. 



1927. Ostrea hyotis (ex parte), Cox, Rept. Palaeontol. Zanzibar, p. 35. 



1928. Ostrea hyotis Faustino, Summary Philippine Mar. Freshw. Moll., p. 28. 



1929. Ostrea [Lopha) hyotis Dautzenberg, Faun. Colon. Français., III, p. 557. 



1929. Ostrea hyotis Lamy, Journ. Conchyliol., LXXIII, p. 233. 



1930. Ostrea hyotis Cox, Mon. Geol. Dept. Hunterian Mus. Glasgow Univ., N". 4, p. 109. 



Cox in his paper on the Palaeontology of Zanzibar (1927) has discussed O. (Z,.) hyotis 

 in détail, and given références to the varions records of the species as a fossil. He noted that 

 the shell of this species is "fairly thin" but this is not always the case. Old shells of this species 

 often hâve, for their size, a remarkably thick shell, and the tubuliferous spines on the ridges 

 are also absent. It is quite possible that O. virleti Deshayes ^) is only a form of this species. 



As VON Martens had suggested, O. nobilis Sowerby -) from the Mauritius is also a synonym 

 of this species. 



Distribution : — O. (Z.) hyotis has a wide distribution in the Red Sea, the Indian Océan 

 and the Western Pacific. 



In the "Siboga" collection it is represented by a very fine clump of 3 shells collected 

 from a reef in Madura Bay, Molo Strait (St. 51). 



2. Ostrea [Lopha) hyotis var. imbricata Lam. 



1819 Ostrea imliricata Lamarck, (non Gmelin) Anim. sans Vertèb., VI, p. 213. 

 1821. Ostrea htibricata Blain ville, Dict. Sci. Nat., XXII, p. 20. 

 1825. Ostrea imbricata Dubois, Epitome, p. 127. 



i^ See Cox, L. R. — Pioc. Malacol. Soc. I.ondon, XVIII, p. 177 (1929). 



2) Sowerby, G. B. — in Reeve, Conch. Icon., XVllI, Ostraea, pi. XXXII, fig. LXXXI (1871). 



