324 Bulletin Vanderbilt Marine Museum, Vol. VII 



References: Pecten fragilis, Chemnitz, J. H., Conch. Cab., 

 1784, Bd. VII, p. 267, 349, taf . 68, fig. 650. 



Ostrea fragilis, Gmelin, J. F., in Linne, C. von, Syst. Nat., 1796, 

 ed. XIII, p. 3332. 



Lima fragilis, Lamarck, J. B., Anim. sans Vert., 1819, t. VI, p. 

 157._SowERBY, G. B., Thes., 1843, vol. I, p. 86, pi. 22, figs. 

 34.37._Dana, J. D., in Gould, A. A., in Wilkes', U. S. Explor. 

 Exped. Mollusks, vol. XII, Atlas, pi. 43, fig. 573 (excellent 

 colour plates made from living specimens) . — Pelseneer, P., 

 Siboga - Expeditie, Lamellibranches (anatomy), Monogr. 

 Llll-a, Livr. LXI, 1911, p. 33-35, pi. 10, figs. 1, 3, 9.— Pra- 

 SHAD, B., Siboga-Expeditie, Monogr. LIII-c, 1932, p. 124 

 (extensive synonymy) . 



Superfamily: OSTRACEA 

 Family: OSTREIDAE 



Genus: OSTREA Linne 

 Ostrea cucullata Born 



Plates 136 and 137 



Type: Born's type of this species of coral-rock oyster came 

 from Australia and is deposited in the Vienna Zoological Museum. 



Distribution : This species is found abundantly on the Queens- 

 land coast from the Gulf of Carpenteria and Cape York in the 

 north to Tweed Heads, New South Wales (Kent) . It is also known 

 from Fiji, Samoa and other island groups of the Pacific (Hedley) . 

 Saville Kent states that this species is strictly marine. 



Material examined: One small immature specimen was 

 taken at Falcon Island, Palm Islands, Queensland, October 7, 1931. 



Remarks : The single specimen taken is quite young and has 

 the normally deep valve less deep than usual and shows other evi- 

 dence of having been subjected to an unusually crowded environ- 

 ment. It is the young of the variety cornucopiaeformis Saville 

 Kent, as illustrated in his chrome plate 14, figures 1, 2, 3, 4. 



