165 261 
Distribution:— Singapore, Mergui Archip., Nicobars, Madras, Ceylon, Mauritius. 
— Poulo Condor, Cochin China, Philippines, Moluccas, Java, Malay Archip., New Guinea, 
Torres Str., Port Molle (Queensland), West Australia, Lifu Isl., Salomon Isls., Viti Isls. 
The Danish Expedition obtained only quite small specimens of this species 
from the Gulf of Siam. Mr. PH. DautzeNnBERG writes to me that his Hemicard. tegulatum' 
must be regarded as a variety of Hemicard. unedo L. 
Hemicardium (Fragum) fragum L. 
Pl. V, Fig. 29). 
Cardium fragum, LINN, Syst. Nat., ed. X, 1758, p. 679, No. 67. ed. XII, p. 1128, No. 83. 
— oe — Mus. Ludoy. Ulric reg., p. 488, No. 39. 
= — — Reeve, Conchol. icon., Il, Cardium, Sp. 23. 
— —_ — MarTINI u. CHEMNITZ, Conchyl. Cabin., X, 2 Abth., p. 105, pl. 4, figs. 9—10. 
Between Koh Kahdat and Koh Kut, 6 fathoms, clay mixed with sand (1/2). 
Koh Kahdat at the strand, numerous specimens. Koh Mak, sandy coast (°/2). 
Long. 4—10 mm. 
Distribution:— Andamans, Nicobars, Gulf of Tadjourah, Mauritius, east 
coast of Africa, Querimba Isls. — China Sea, Philippines, Amboina, Java, Borneo, 
Sulu Isls., Liukiu Isls., Torres Strait, Port Curtis and Mast Head Reef (Queensland), 
New Zealand, New Caledonia, Gilbert Isls., Funafuti (Ellice Isls.), Paumotu Isls. 
The specimens which have been obtained are all very small. According to 
O. Finscu this species is used as food in the Gilbert Islands. Several specimens of 
a peculiar variety (var. carinata m.), with a decidedly prominent keel extending from 
the umbo down towards the hinder angle of the ventral side, produced by the strong 
development of the two ribs at that place, have been taken on the strand of Koh 
Kahdat and at Koh Chang; this variety is figured on PI. V, Fig. 20. 
Hemicardium (Fragum) carditaeforme, Reeve. 
(Pl. V, Figs. 21—22). 
Cardium Carditeforme, REEvE, Conchol. icon., Il, Cardium, Sp. 127. 
Between Koh Mesan and Koh Chuen, 15—38 fathoms, stones with shells (7). 
Koh Chuen, 10—15 fathoms (1). Between Koh Mesan and Cape Liant, 5—9 fathoms, 
sand (‘/2). Strand of Koh Kahdat (‘/:). West of Koh Kong, 10—15 fathoms (1). 
Long. 4—9 mm. 
Distribution:— Andamans, Gulf of Suez (‘‘rare’ M’ANpREW, COOKE). 
As the figure by REEVE is not good, I give a new figure of the species. 
Hemicardium (Ctenocardium) fornicatum, Sow. 
Cardium fornicatum, Sowrersy, Proc. Zool. Soc. London, 1840, p. 110. 
=== - _ Conchol. Illustr., Sp. 84, fig. 50. 
oe — REEVE, Conchol. icon., Il, Cardium, Sp. 110. 
' Journal de Conchyliologie, vol. 48, 1900, p. 5. 
