46 



i86o. Arca fiisca Reeve, Elem. Conch., II, p. 93. 



1862. Arca fusca Chenu, Alan. Conchyliol., II, p. 173, fig. 862. 



1866. Arca fusca Mabille & Le Mesle, Journ. Conchyliol., XIV, p. 118. 



1867. Arca fusca Mitchell, Cat. Mus. Madras, p. 73. 

 1869. Arca fusca Issel, Malacol, Mar. Rosso, p. 90. 



1869. Barbatia fusca Dunker, Cat. Mus. Godeffroy, IV, p. 114. 



1869. Barbatia fusca Frauenfeld, Abhandl. Zool.-Bot. Ges. Wien, XIX, p. 886. 



1874. Barbatia fusca Dunker, Cat. Mus. Godeffroy, V, p. 173. 



1879. Arca fusca von Martens, Monatsb. Kais. Akad. Wiss. Berlin, p. 741. 



1880. Arca [Barbatia) fusca von Martens, Môbius Beitràg. Meeresfor. Mauritius, Seychell, p. 319. 



1884. Arca fusca Brazier, Proc. Linn. Soc. N. S. Wales, IX, p. 802. 



1885. Arca [Barbatia] fusca Smith, "Challenger" Lamellibranchia, p. 260. 



1887. Arca [Barbatia) fusca von Martens, Journ. Linn. Soc. London, (ZooL), XXI, p. 207. 



1888. Arca [Barbatia) fusca Kobelt, in Martini, Chemn. Conch.-Cab., (N. F.), VIII (2), Arca, 



p. 18, pi. IV, fig. 2, pi. VI, figs. 5, 6. 

 1890. Arca fusca Paetel, Cat. Conch. Samm., III, p. 212. 



1890. Arca fusca Vassel, Bull. Soc. Hist. Nat. d'Autun, III, p. 26. 



1891. Arca [Barbatia) fusca Fischer, P., Bull. Soc. Hist. Nat. d"Autun, IV, p. 214. 

 1896. Arca fusca Casto de Elera, Cat. Sist. Filip., p. 803. 



1898. Arca fusca Melvill & Standen, Journ. Conch., IX, p. 81. 



1899. Arca fusca Melvill & Standen, Journ. Linn. Soc. London, (ZooL), XXVII, p. 185. 

 1901. Barbatia fusca Sturany, Denkschr. Kais. Akad. Wien. Math.-Nat., LXIX, p. 289. 



1905. Arca fusca Hidalgo, Cat. Filip., p. 372. 



1906. Barbatia [Barbatia) fusca Standen & Leicester, Ceylon Pearl Oyster Rept., V, p. 291. 



1906. Arca fusca Hedley, Proc. Linn. Soc. N. S. Wales, XXXI, p. 463. 



1907. Arca [Barbatia) fusca Lamy, Journ. Conchyliol., LV, p. 53. 



1909. Arca [Barbatia) fusca Lynge, D. Kgl. Dansk. Vidensk. Selsk. Skr. Nat. -Math., {7) 



V, p. III 



19 10. Arca [Barbatia) fusca Dautzenberg, Journ. Conchyliol., LVIII, p. 30. 



1910. Arca fusca Hedley, Austral. Àss. Adv. Sci., XII, p. 344. 



191 1. Arca fusca Pelseneer, "Siboga" Lamellibranches (Anat.), pp. 9, 12 — 15, pi. III, figs. 6 — 10. 

 19 17. Arca [Barbatia) fusca Lamy, Bull. Mus. d'Hist. Nat. Paris, XXIII, p. 28. 



1929. Arca [Barbatia) fusca Dautzenberg, Faun. Colon. Français., III, p. 575. 



1930. Arca [Barbatia) fusca Thiele, Faun. Sùdwest Austral., V, p. 589. 



Arca fiLsca is a widely distributed species in the Indian Océan and its distribution extends 

 to the Red Sea in the Northwest, Madagascar in the South and through the Sunda Islands to 

 AustraHa, New Caledonia and New Zealand in the Pacific Océan. I ag^ree with Lamy that A. 

 cruciata Pliilippi is a synonym of Bruguière's species, but the shells in the "Siboga" collection, 

 which agrée with the description and figure of rodatzi Dunker, hâve constrained me to separate 

 them as a distinct variety. 



Distribution : — In addition to the localities noted by Lamy and Lynge for A. fusca, 

 the following records of the species from the "Siboga" collection should prove useful : Bay of 

 Badjo, West of Flores (St. 50), Bay of Nangamessi, Sumba (St. 53), Anchorage off Seba 

 (St. 58), South of Saleyer (St. 66), Pulu Sebangkatan, Bornéo Bank (St. 81), St. 105 (6°8'N., 

 121° 19' E.), Anchorage off Lirung Salibabu Island (St. 133), Anchorage off Laiwui (St. 142), 

 Fau Anchorage (St. 149), Banda Anchorage (St. 240), Anchorage off Kilsuin, West Coast of Kur 

 Island (St. 250), St. 251 (5°28'.4S., i32°o'.2E.), Pepela Bay, east of Rotti Island (St. 301) 

 and a nuniber of dead shells from Ambon. The largest spécimen in the collection is 58 mm. long 

 and 32 mm. high. 



