248 152 
Koh Kram, 380 fathoms ('/2). North side of Koh Mesan, 10—15 fathoms, 
stones (2). Koh Chuen, 10—15 fathoms (*/2). 
Long. 10—29 mm. 
Distribution: — Ceylon and Gulf of Manaar, Hululu Isl. (Maldive Archip.). 
— Philippines, Japan, Torres Strait, North and East Australia, Funafuti (Ellice 
Isls.), Mangsi Isl., Sooloo-Sea. 
The present species is recorded (with doubt) from Mauritius and Cargados, 
and probably erroneously by J.G.Cooper from California. 
I doubt whether Chione embrithes, MELvitL and STANDEN,! can be maintained 
as a distinct species. 
Dosinia trigona, Reeve. 
Artemis trigona, REEvE, Conchol. icon., VI, 1850, Artemis, Sp. 42. 
Cytherea - — Sowerby, Thesaurus Conchyl., II, p. 633, pl. 133, fig. 120. 
Artemis — — loc. cit., II, p. 659, pl. 141, fig. 20. : 
Dosinia — — ROmeER, Monographie d. Molluskengatt. Dosinia, 1862, p. 20, pl. 4, fig. 5. 
The strand off the Mangrove at the station on Koh Chang (2). Coast of Lem 
Ngob (?/2). 
Long. 20—39 mm. 
Long. 35 mm., alt. 37 mm., crass. 27 mm. 
— 31 mm., — 32mm, — 20 mm. 
Distribution: — Gulf of Manaar (THURSTON). 
ReEeEve’s statement (repeated by DesHayrs, Sowerby, ROMER and others) that 
this species was found in the Red Sea has not hitherto been confirmed. 
Dosinia laminata, Reeve. 
Artemis laminata, ReEve, Conchol. icon., VI, 1850, Artemis, Sp. +1. 
_- — Sowensy, Thesaur. Conchyl., Il, p. 674, No. 71, pl. 144, figs. 86—87. 
Dosinia -- Romer, Monogr. d. Moll. Dosinia, 1862, p. 62, No. 72, pl. 16, fig. 2; pl. 10, fig. 3. 
— — Marrini u. CHEMNITZ, Conchyl. Cabin., XI, 1 Abth., p. 104, pl. 26, figs. 10—12. 
— _- - Hipatco, Obras malacoldgicas, I, tom. II, 19038, p. 305, No. 398. 
Off Tung Kaben, 6 fathoms, mud mixed with clay (1). W. of Koh Chang, 
20 fathoms, mud (2). S. of Koh Kahdat, 8—10 fathoms, mud (5). Koh Kahdat, 
1—5 fathoms, sand (1). Between Koh Kut and Koh Kahdat, 6—10 fathoms, clay 
and sand (2+-*/2). S.of Koh Mak, 5—6 fathoms (1). East of Koh Mak, 20 fathoms, 
mud (3 + 1/2). W. of Koh Kut, 15 fathoms, mud (20). 
Long. 1'/2—34 mm. (Long. 34 mm., alt. 34 mm., crass. 18 mm.). 
Distribution: — Andamans, Red Sea (pleistocene). — Philippines, China, 
Japan. 
Almost all the individuals from the Gulf of Siam were full of clay between 
the transverse ribs owing to the clayey soil in which they had been living. 
1 Journal of the Linnean Society, Zoology, vol. XXVII, p. 195. 
