278 



i8. Cardium [Ctenocardid) perornahmi (Iredale). 



1840. Cardiiini inibricatîmi Sowerby (nec Born), Proc. Zool. Soc. London, p. 1 10. 



1841. Cardium iinbricatujii Sowerby, Conch. Illustr., p. 7, fig. 48. 



1843. Cardium Imbricatum Hanley, Rec. Biv. Shells, p. 143, pi. XVII, fig. 42. 



1844. Cardium imbricatum Reeve, Conch. Icon., II, Cardium, pi. V, fig. 28. 



1845. Cardium imbricatum Catlow & Reeve, Conch. Nomencl., p. 43. 



1857. Hemicardia [Ctenocardia] imbricata Adams, H. & A., Gen. Rec. Mol!., II, p. 459. 



1860. Cardium imbricatum Reeve, Elem. Conch., II, p. 102. 



1869. Cardium (Fragum) imbricatum Romer in Martini-Chemn., Conch. -Cab. (N. F.), X (2), 



Cardiacea , p . 105. 

 1872. Hemicardium [Fragum) imbricata Tryon, Amer. Journ. Conch., VII, p. 271. 

 1885. Cardium [Fragum) imbricatum Smith, "Challenger" Lamellibranchia., p. 164. , 



1890. Hemicardium [Ctenocardia) imbricatum Paetel, Cat. Conch. Samm., III, p. 119. 

 1899. Hemicardium [Ctenocardia) z'/;2/5rzV<;z^»w Melvill & Standen, Journ. Linn. Soc. London (Zool.), 



XXVII, p. 193. 



1909. Hemicardiimi [Ctenocardia) imbricatum Lynge, D. Kgl. Dansk. Vidensk. Selsk. Skr. Nat.- 



Math., (7) V, p. 262. 



1910. Cardium imbricatum Hedley, Austral. Ass. Adv. Sci., XII, p. 348. 



191 1. Cardium imbricatum Pelseneer, "Siboga" Lamellibranches (Anat.), p. 55. 

 1929. Fragum [Ctenocardia) perornatum Iredale, Mem. Queensland Mus., IX, p. 264. 



Iredale has sug^gested the name Fragum [Ctenocardia) ornatiim to replace Sowerby's 

 Cardium imbricatum, as the latter name had already been used by Born ^). 



I cannot agrée with Lvnge that C. [C.) hystrix ^^ C. (C) symbolicum (Iredale) "approaches 

 somewhat Gard, imbricatum'" . The form of the shells is similar, but the sculpture of C. (C) sym- 

 bolicum, urhich consists of strongly developed spines, at once séparâtes it froni other allied species. 



Distribution : — C. (C) perornatum. has been recorded from the Australian waters and 

 Gulf of Siam. 



In the "Siboga" collection there a large number of shells of ail âges collected at Anchorage 

 off Djangkar, Java (St. 4), Bay of Pidjot, Lombok (St. 33), Bay of Bima (St. 47), Kambaragi 

 Bay, Tanah Djampeah (St. 64), Macassar (St. 71), Sulu Harbour, Sulu Island (St. 104), 

 Anchorage off Lirung, Salibabu Island (St. 133), St. 164 (1° 42^.5 S., 130° 47^.5 E., 32 mètres) 

 and Lohio Bay, Buton Strait (St. 205). 



19. Cardium [Ctenocardia') victor Angas. 



1872. Cardium [Ctenocardia) victor Angas, Proc. Zool. Soc. London, p. 612, pl. XLII, fig. 9. 

 1880. Cardium [Ctenocardia) victor von Martens, Mobius Beitràge Meeresf. Mauritius, Seychell., 



p. 324. 

 1890. Hemicardium [Fragum) Victor Paetel, Cat. Conch. Samm., III, p. 119. 



1903. Cardium [Ctenocardia) î'zV/£»r Smith, Fauna Geogr. Maldive, Laccadive Archipel., II, p. 625. 



1904. Cardium [Ctenocardia) victor Smith, Ann. Mag. Nat. Hist., (7) XIV, p. 9. 



1909. Cardium [Ctenocardia) victor Melvill, Trans. Linn. Soc. London (Zool.) XIII, p. 135. 

 191 I. Cardium [Ctenocardia) victor Lamy, Bull. Mus. d'Hist. Nat. Paris, XVIII, p. 132. 



The sculpture of C. (C) victor, as Smith pointed out, is peculiar in that the ribs are 

 "alternately longer and smaller". It would, however, be more accurate to describe thèse ribs as 

 alternately more raised; the higher ribs are squamate and bear short spines, while the alternating 



l) BoR.S", I. VON. — Ind. Test. Mus. Caes. Vindobon., p. 29 (1778). 



