254 158 



Cardiiim setosiim, Ri;i)i-iei,i), Hidalgo, Obras malacologicas, I, tom. II, lildS, p. ;t29, No. 4'J8. 



— latum. Chemnitz, Conch)!. Cabin., VI, 1782, p. 197, pi. 19, figs. 192-93. 



— — Autorum (Reuve, Römkh e. a. non Boün fide F. Bh.ueh' et Edg. A. Smith; loc.cit.l. 



Islands in the Gulf of Siam (L. Morlet, Journ. de Conchyliologie, vol. 37, 

 1889, p. 168). 



The Danish Expedition to Siam collected no specimens of this species. 



Distribution: — Mergui Isis., Nicobars, Madras, Ceylon, Bombay, Persian 

 Gulf, Gulf of Aden. — Hong Kong, Philippines, Java, Sulu Isis. 



Cardium (Acanthocardium) Sueziense, Iss. 



Carditim Sitezicnsix, I.s.sel, Malaco!, d. Mar Rosso, 18(i9, p. 7(1, pi. 3, fig. 4. 



— sueziense — Edg. Smith, Lamellibianciiiata of the Challenger Exped., p. 158, pi. VIII, figs. 



2— 2 b. 



— fragiim, Linné var. sueziense, Issel, Ch. Hedley, Australian Museum, Sydney. Memoir 111, 1896 - 



1900, p. 504. 



Between Koh Mesan and Cape Liant, 5 9 fathoms, sand (2). Between Koh 

 Riol and Koh Mesan, 3—5 fathoms, sand (12). Koh Kahdat, 1 fathom, sand (2). 

 West of Koh Kut, 15 fathoms, mud (15). 



Long. 4—10 mm. 



Distribution: — Ceylon, Gulf of Manaar, Angrias Bank, Laccadive and Maldive 

 Archip., Persian Gulf, Mekran Coast, Red Sea (Stubany), Gulf of Suez (common, 

 IssEL and M' Andrew). — Torres Strait, Levuka, Vili Isis., 12 fathoms (Challenger), 

 Funafuti (Ellice Isis.). 



Edg. a. Smith (loc. cit. p. 159) is quite right in thinking that the present species 

 may become larger than his specimens (7 mm.) from the Viti Islands; in the Gulf 

 of Siam thej' attain, as stated above, 10 mm. Issel gives as the maximum for the 

 specimens from the Gulf of Suez mm., Sturany^ mentions the following measure- 

 ments for specimens from Massaua : — alt. 725 mm., long. 75 mm., crass. 575 mm. 

 Several of the individuals from tlie Gulf of Siam were ornamented with distinct 

 intercostal sculpture, and both entirely white individuals and also forms with red 

 dots and spots occur; in the latter the red colour is also seen upon the white 

 interior of the valves. Valves are often found which are vivid yellow upon the 

 interior of the umbonal region. Ch. Hedley (loc. cit.) is of opinion that the 

 species under consideration is a variety of Hemicardinm fragum L. Upon the basis 

 of the material collected at Funafuti Atoll (Ellice Isis.) he says: "The four dozen 

 odd valves before me exhibit much variation in contour, and they a|)pear to pass 

 by gradual transition into tyi)ical C. fragrum" but I doubt whether he is right in 

 this supposition. (I do not understand the reason why Hedley always in his paper 

 gives "C. fragrum L." for C. fragum L.). 



• F. Brauer, Sitzungsber. d. k. k. Akad. d. Wiss. Wien. Matheniat. naturw. Classe, Bd. 77, 1 Abth., p. 127. 

 - Nachrichtsblatt d. Deutseh. Malakozool. Gesellsch., 1905, p. 139. 



