71 167 



Trapezium daclijlus, Iîrigi'ière, H. Krebs, West-Indian mar. shells. 1864. p. IS.'i. 

 Cutalliophaija dactylus, Bruguière, P. Fischer, Moll, de I'lndo-Chiue, p. 2;iO. 



— cardiloidea, Blainvili.e, Manuel de Malacol. et de Conchyl., 1825, p. 560, pi. 76, fig. .S. 

 Ctjpricardia Hornheckiana, d'Orbigny, Moll, de I'ile dc Cuba, II, 1853, pi. 266, No. 464, pi. 26, figs. 33 — 34. 



— gracilis, Shutti.eworth. 



Trapezium — — H. Krebs, West-Indian mar. shells, 1864, p. 123. 



Coralliophaga striolata, H.Adams, Proc. Zool. Soc. London, 1870, p. 791, pi. 48, tig. 12. 



— lithophayella, Dunker (non Lamarck), Index moll. mar. Japon., 1882, p. 209. 



Koh si Chang (-'a). Klong Salakpat (1). Koh Chang, 1 fathom, old coral blocks 

 (taken in great numbers). North end of Koh Chang, 1 fathom, old coral blocks (-/s). 

 Koh Kahdat, 1 fathom, sand (1). 



Long. 2^32 mm. 



Distribution: — Mergui Isl., Aden, Red Sea, Mauritius. — Poulo Condor, 

 Philippines, Japan, Yap Isl., Uvea (Wallis Isl.), Lord Howe's Isl. — East coast of 

 America : Florida (Cedar Keys), Greater and Lesser Antilles. 



A. H. Cooke is of opinion that Reevk's C. laminata is probably synonymous 

 with C. coralliophaga, Chemn. — Several of the specimens from the Gulf of Siam 

 (at any rate the individual which was taken alive at Koh Kahdat, on a sandy 

 bottom) convey the impression of not always boring in corals. It is a characteristic 

 mark of distinction in this species that it has, on both apices, a small, dark stripe, 

 which occurs in tlie specimens from both American and Asiatic waters. 



Fam. Lucinidae. 



Lucina (Thyasira) edentula L. 



r<?ni(.v edentula, Linné, Syst. Nat., ed. X, 1758, p. 689, No. 122. - ed. XII, p. 1135, No. 146. - Mus. Ludov. 



Ulr., 1764, p. 508, No. 74 (non L. edentula, Lamarck). 

 Lucina — — Philippi, Zeitschr. f. Malakozool., 1845, p. 179. 



— — — Abbild, u. Beschreib, neuer od. wen. gek. Conchyl., II. 1847, p. 205, pl. 1, 



fig. 1. 



— — — Dunker, Index molluscor. mar. Japon., 1882, p. 216, pl. 8, figs. 7—8. 



— {Anodontia} edentula L., v. Martens, Journ. Linn. Soc, Zoology, vol. 21, 1887, p. 173, No. 65. 



— edentula, Linné, v. Martens, Süss- u. Brackwasser-MoIIusk. d. Ind. Arehip., p. 229, pi. XI, figs. 1—2. 



— Philippiana, Reeve, Conchol. icon., VI, 1850, Lucina, Sp. 23, and pl. V, fig. 25. 



S. of Koh Chuen, 30 fathoms ("/a). 



Long. 32—60 mm. 



Distribution: — Singapore, Mergui Arehip., Nancowry Isl. (Nicobars, "Gala- 

 thea" Exp.), Gulf of Manaar, Suez, Red Sea (Forskål, according to specimens from 

 him, in the Zool. Mus., Copenhagen^). — Japan, Liukiu Isl., Philippines, Moluccas, 

 Lifu, Sulu Isl., Upolu, Tongatabu. 



In the Zoological Museum of the University of Copenhagen there are preserved 

 under the name of L. fragilis, Phil. (Krauss), ''/a specimens (which undoubtedly were 

 contributed by Krauss himself) of L. edentula L. from Port Elizabeth (Cape), size 

 as follows: — long. 49 mm., alt. 4ô mm., crass. 37 mm., a size never attained by 



' The specimens were determined as L. (jlubosa. Forsk. 



