99 



1909. Pteria margaritifera Lamy, Bull. Mus. d'Hist. Nat. Paris, XV, p. 468. 



191 1. Meleagrina rnargaritifera Pelseneer, "Siboga" Lamellibranches (Anat.), p. 25. 



191 5. Margaritifera rnargaritifera Boettger, Abhandl. Senckenberg. Naturf. Gesell., XXXV, 



p. 140. 

 1919. Meleagrina {Pteria) margaritifera Odhner, Arkiv. Zool., XII, N" 6, p. 23. 



1925. Pteria [Unioniitin) margaritifera Oostingh, Geol, Comm. Agr. Univ. Wageningen, N". 9, 



p. 246. 



1926. Meleagrina margaritifera Pallary, Mém. Inst. Egypt., XI, p. 117, pi. XV, figs. 7, i — 3. 



1928. Pteria margaritifera Faustino, Summary Philippine Marine Freshw. Mollusks, p. 26. 



1929. Meleagrina margaritifera Dautzenberg, Faun. Colon. Français., III, p. 563. 



In vievv of the very corifused ideas of the earlier authorities about the Linnean species 

 Mytihts margaritifertis it is almost impossible to understand the species of the Mother-of-Pearl 

 Oysters recorded from différent localities. The figures of the species also are, in most cases, 

 unsatisfactory and it is no easy task to surmise what species they are intended for. The above 

 synonymy has béen drawn up after a careful examination of the literature and the views of 

 such authors as Cooke, Jameson, Lynge and Oostingh, but several doubtful records hâve not 

 been included. 



Jameson's paper cited above contains a detailed account of the species and its distribution. 

 The shells in the "Siboga"' collection belong to Jameson's "var (?) typica\ They vary a great 

 deal in the shells being orbicular or, as in the case of some shells from St. 144, very much 

 elongated in the dorso-ventral direction and the outline becoming somevvhat elongated-ovoid. 

 The surface markings and the colouring are also very variable. The largest shell in the collection 

 is about 200 mm. in height. 



Distribution : — The geographical distribution of the typical form of Pindada marguri- 

 tifera is dealt with by Jameson in détail. It may, however, be noted hère that it appears to be 

 the common form round Australia, New Guinea, New Britain, the Dutch East Indies and other 

 suitable localities in the Southern Pacific. 



The "Siboga" collection contains shells of this species from the Strait of Boleng near Lomblem, 

 Kur reefs, Lumu Lumu, Bay of Labuan Tring, West coast of Lombok (St. 19), Anchorage off Beo, 

 Karakelang Islands (St. 131), Anchorage north of Salomakieë (Damar) Island (St. 144), Anchorage 

 off the south point of Kabaëna Island (St. 209), Saleyer Anchorage (St. 213), Anchorage south 

 of Lucipara Group (St. 225c), Ambon Anchorage (St. 231) and Banda Anchorage (St. 240). 



2. Pinctada vulgaris (Schumacher). 



1785. Die Perlenmiitter mnschel etc. Chemnitz, Conch.-Cab., VIII, p. 126, pi. LXXX, fig. 717. 



1817. Perlamater vulgaris Schumacher, Essai Nouv. Syst., p. 108, pi. XX, figs. 3, a, b. 



18 17. Savigny, Descr. Egypte. MolL, pi. XI, figs. 8, 9. 



18 19. Meleagrina albina Lamarck, Anim. sans Vertèb., VI, p. 152. 



1830. Avicula albina Deshayes, Encyclopéd. Méthod., I, p. 102. 



1843. Meleagrina Albina Hanley, Rec. Biv. Shells, p. 264. 



1850. Avicula fucata Gould, Proc. Boston Soc. Nat. Hist., III, p. 309. 



1852. Avicula badia Dunker, Zeitschr. MalakozooL. IX, p. 79. 



1852 — 56. Avicula fucata Gould, U.S. Expl. Exped., Moll., p. 441, pi. XXXIX, figs. 551^, b. 



1855. Margaritifera imbricata Môrch, Cat. Yoldi, p. 51. 



1857. AvicîUa perviridis, A. occa, A. aerata and A. fucata Reeve, Conch. Icon., X, Avicula, 



pi. VIII, figs. 20, 24, pi. X, fig. 32, pi. XVII, fig. 74. 

 1865. Avicida radiata Vaillant (nec Deshayes), Journ. Conchyliol., XIII, p. 114. 



