292 



2. Tridacna crocea Lamarck. 



685. PectnncHlns striatus etc. Lister, Hist. Conch., pi. CCCLIII, fig. 190. 



784. Chaîna iinbricata etc. Chemnitz, Conch. -Cab., VII, p. 124, pi. XLIX. fig. 496. 



797. Bruguière, Encyclopéd. Méthod., pi. CCXXXV, fig. 2. 



817, Chaîna gigas var. C, Dillwyn. Descr. Cat., I, p. 214. 



819. Tridacna crocea Lamarck, Anim. sans Vertèb., VI, p. 106. 



825. Tridacna crocea Dubois, Epitome, p. lOO. 



831. Tridacna crocea Deshayes, Encyclopéd. Méthod., III, p. 1046. 



834. Tridacna crocea and T. miitica (non Lam.), Quoy & Gaimard, Voy „Astrolabe", III, 



p. 488, pi. LXXIX, figs. 2, 3, p. 490, pi. LXXX, figs. i — 3. 



843. Tridacna Crocea Hanley, Rec. Biv. Shells, p. 232. 



845. Tridacna crocea Chenu, lUustr. Conchyliol., p. 2. pi IV, fig. 2. 



855. Tridacna crocea Woodvvard, Ann. Mag. Nat. Hist., (2) XV, p. 100. 



857. Chanietrachaea scapha, Adams, H. & A. Gen. Rec. Moll.. 11, p. 465. pi. CXIII, figs. 2. 



860. Tridacna crocea Reeve, Elem. Conch., II, p. 75. 



862. Tridacna Cnnimgii, T. ferrnginea and T. crocea Reeve, Conch. Icon., XIV, Tridacna, 



pi. VII, fig. 7, pi. VIII, figs. 8, 9. 



868. Tridacna crocea Kùster in Martini-Chemn. Conch. -Cab. (N. P.), VIII (4), Tridacna etc., 

 .p. 6, pi. I, fig. 6. 



869. Chanietrachaea crocea Frauenfeld, Verhandl. Zoo). -Bot. Ges. Wien, XIX, p. 884. 

 878. Tridacna crocea Tapparone-Canefri. Bull. Soc. Zool. France. III, p. 276. 

 880. Tridacna crocea von Martens, Mobius Beitràge Meeresf. Mauritius, Seychell., p. 323. 

 884. Tridacna crocea Grasset, Ind Test. Viv., p. 228. 



884. Tridacna crocea Sowerby, Thés. Conch., V, p. 181, pi. CCCCLXXXVI, fig. 6, pi. 

 CCCCLXXXVII, figs. 9, 10. 



885. Tridacna crocea Smith, "Challenger" Lamellibranchia., p. 170. 

 887. Tridacna crocea var. Cnmingii von Martens, Journ. Linn. Soc. London (Zool.), XXI, p. 209. 



902. 'Tridacna crocea von Martens, Rumphius Gendkb., p. 125. 



903. Tridacna cuiningii Smith. Faun. Geogr. Maldive, Laccadive Archipel., IL, p. 624. 

 903. Tridacna Cnmingii and T. crocea, Hidalgo, Obras Malacol., II, pp. 392, 397. 

 906. Tridacna crocea Melvill & Standen, Proc. Zool. Soc. London, p. 840. 



909. Tridacna crocea Lynge, D. Kgl. Dansk. Vidensk. Selsk. Skr. Nat. Math., (7) V, p. 263. 



910. Tridacna crocea Hedley, Austral. Ass. Adv. Sci., XII, p. 348. 



915. Tridacna crocea Hirase, Illustr. Thousand Shells, pt. 3, pi. XXIX, fig. 143. 



916. Tridacna crocea Boettger, Abhandl. Senckenberg. Nat. Ges., XXXVI, p. 308. 

 921. Tridacna crocea Hedley, Mem. Austral. Mus., XIII, p. 166, pi. XXX, fig. 5. 

 925. Iridacna crocea Oostingh, Geol. Comm. Agr. Univ. Wageningen, N° 9, p. 279. 



928. Tridacna crocea and T. Cnniingii Paustino, Summary Philippine Mar. Freshw. Moll., p. 64. 



929. Tridacna crocea Dautzenberg, Faun. Colon, Français., III, p. 585. 



After a careful examination of Reeve's types in the British Muséum (Nat. Hist), London 

 and the good séries of shells of différent âges in the "Siboga" collection, I agrée with Hedley 

 that T. cumingii and 7. ferruginea are synonymous with T. crocea. The species is very 

 variable in regard to shape, the tumidity of the valves, and sculpture. The scales on the 

 ridges may be raised or flush with the surface. 



Distribution : — T. crocea is very widely distributed in the Indo-Pacific région on coral 

 reefs and has also been recorded from the Persian Gulf. 



The "Siboga" Expédition collected spécimens of this species in the Bay of Nangamessi, 

 Sumba (St. 53), reef near Anchorage off Beo, Karakelang Islands (St. 131), reef near Fau 

 Anchorage (St. 149) and reef near Saleyer Anchorage (St. 213). A dead valve was also 

 brought up from hard sandy bottom at St. 32 (9° 2' S., ii5°47'E., 842 mètres). 



