254 



1909. Venus [Chione) inarica Melvill, Trans. Linn. Soc. London (Zool.), XIII, p. 132. 



1909. Chione [Omplialoclathrnui] inarica Lynge, D. Kgl. Dansk. Vidensk. Selsk. Skr. Nat.-Math., 



(7) V, p. 242, pi. V, figs. I — 4. 



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



1910. Chione marica Dautzenberg, Journ. Conchyliol., LVIII, p. 31. 



191 1. Venus [Chione) marica Lamy, Bull. Mus. d'Hist. Nat. Paris, XVIII, p. 133. 

 1916. Chione inarica Hedley, Journ. Proc. Roy. Soc. West Australia, I, p. 165. 



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



1919. Chione marica Odhner, Arkiv Zool., N" 6, p. 30. 



1928. Venus [Chione] marica Faustino, Summary Philippine Mar. Freshw. Moll., p. 71. 



1929. Chione marica Dautzenberg, Faun. Colon. F'rançais., III, p. 602. 



Venus inarica Linnaeus is a puzzle. The description of the species is very incomplète, 

 and even though it was supplemented by a few remarks of Hanley, it is impossible to under- 

 stand the species. The uncertainty in référence to its habitat is another source of confusion. 

 Linnaeus, Chemnitz, Dillwyn and Pfeiffer considered the "species to be from the West Indies. 

 Hanley doubted this habitat, while Deshayes, Sowerby, Reeve, von Martens, Smith and later 

 authors generally hâve adopted the name marica for the Indo-Pacific species. Lynge tried to 

 get over the difficulty by adopting the spécifie name inarica^ as of Sowerby. 



In the "Siboga" collection there are two stray valves of this species from the Bay of Bima 

 (St. 47) and a complète shell from the Anchorage off Kawio and Kamboling Islands, Karkaralong 

 Group (St. 129) which agrée with shells figured by Reeve as Venus marica from the Philippines. 



2. Chione [Timoclea^ mindanensis Smith. (Plate VI, figs. 21, 22). 



1885. Venus [Chione) mindanensis Smith, "Challenger" Laniellibranchia, p. 130, pi. III, figs. 4, 4^,^. 



1896. Chione mindanensis Casto de Elera, Cat. Sist. Filip., p. 756. 



1903. Chione mindanensis Hidalgo, Obras Malacol., II, p. 298. 



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



1928. Venus Chione mindanensis F'austino, Summary Philippine Mar. Freshw Moll., p. 71. 



Smith's description oi Chione {^fiinoclea) mindanensis is based on three worn valves. The 

 sculpture of this beautiful species consists of a large number of radiating ridges, which lie 

 fairly closely in the umbonal région, but become separated lower»down; a few finer ridges are 

 also intercalated between them. The concentric ridges are fairly thick ; some of them on the 

 anterior half of the shells are even thicker than the radiais and by intersection with the radiais 

 become crenulated. The radiais lie at a slightly lower level than the concentric ridges, and near 

 the margins of the shell, owing to the numerous, closely packed, concentric striae are to be 

 distinguished only as slight undulations between the latter. The "Siboga" shells are generally 

 larger, the measurements of one of the shells are: length 9.8 mm., height 8.9 mm., diameter 

 5.4 mm. I figure one of the shells. 



The "Siboga" shells of this species were dredged in the Bay of Bima (St. 47, 55 mètres) 

 Western Entrance Samau Strait (St. 59, 390 mètres); St. 105 (6°8'N., i2i°i9'E., 275 mètres) 

 and west of Kwandang Bay entrance (St. 116, 72 mètres). 



o- 



Chione [Timoclea) recognita Smith. 



1863. Venus marica Reeve, (ex parte, non Linn.), Conch. Icon., XIV, Venus, pi. XXII, fig. \o\a. 

 1885. Venus [Chione) recognita Smith, "Challenger" Lamellibranchia, p. 125, pi. III, figs. 5, ^a — e. 



