212 HIS 
Gari tenuis, DesHayEs, V. Bertin, Révision d. Garidées, p. 110, No. 30. 
Psammobia tenuis, DesHayes, Hipavco, Estud. prelim. sobre la fauna malacol. de las isl. Filipinas, II, 
p- 82, No. 164. 
N. of Koh Kahdat, 4—5 fathoms, coarse sand (1). Koh Kahdat, 1 fathom, 
sand (3). W. of Koh Kut, 30 fathoms, sand and mud (°/2). 
Long. 5—25 mm. 
Distribution: — Philippines. 
The specimens from the Gulf of Siam are pink in colour, 
Psammobia anomala, Desh. 
Psammobia anomala, DesHayes, Proc. Zool. Soc. London, XXII, 1854, p. 320, No. 15. 
— _— Reeve, Conchol. icon., X, Psammobia, Sp. 5. ‘ 
— -- — Epc. Smiru, Lamellibranchiata of the Challenger Expedition, p. 95. 
Gari — — V. Bertin, Révision d. Garidées, p. 110, No. 33. 
Psammobia _ — Hipaico, Estud. prelim. sobre Ja fauna malacol. de las is]. Filipinas, I, 
p. 87, No. 170. 
Gulf of Rayong, 7—10 fathoms, sand, mud (1'/2). Koh Chuen, 30 fathoms (1). 
Between Koh Kut and Koh Kahdat, 10 fathoms, shells (1/2). 
Long. 19—23 mm. 
‘Distribution: — Madras. — Philippines, Japan, Borneo, Torres Strait, north 
and east coasts of Australia. 
Psammobia simplex, Sow. 
(Pl. IV, Figs. 6—8). 
Psammobia simplex, G. B. Sowrrsy, Proceed. Malacolog. Soc. London, I, 1894 (1895), p. 159, pl. 12, fig. 21. 
Gulf of Rayong, 7—10 fathoms, sand and mud (1 -| '/:). Around Koh Kahdat, 
8—10 fathoms, mud (°/2). Between Koh Kut and Koh Kahdat, 10 fathoms, shells (°/2). 
South and west of Koh Kut, 15—20 fathoms, mud (1 + 2/2). N. of Koh Kut, 10 
fathoms, mud (*/:). 
Long. 5—14 mm. (long. 14 mm., alt. 8 mm.). 
Distribution: — Singapore (Sv. Gap, shallow water; */2 valves). Karachi 
(MetvitL, & STANDEN), Hong Kong (Sowerpy). 
SowerBy gives “Longit. 9, alt. 5 mm.” as the measurements of his specimens; 
those from the Gulf of Siam are of larger dimensions; they are of a pure white 
colour. 
Elizia orbiculata, Wood. 
Solen orbiculatus, Woop, Index Testaceologicus, 1828, Supplem. p. 3, No. 4, pl. 1, fig. 4. 
Psammobia orbicularis, DesHayes, Magazin de Zoologie p. Guérin-Méneville. Mollusques, 1839, pl. 7. 
Soletellina orbiculata, Woop, REEveE, Conchol. icon., X, Soletellina, Sp. 18. 
Elizia — — Apams, Genera of recent Mollusca, IJ, p. 393, pl. 103, fig. 5. 
—  orbicularis, — Bertin, Révision d. Garidées, p. 129, No. 2. 
— orbiculata, - J. pe MonrGan, Bull. de la Soc. Zool. de France, X, 1885, p. 366, No. 26. 
— — — Ev. Marrens, Siiss- u. Brackwasser-Moll. d. Ind. Archip., p. 233. 
Soletellina reversa, Rerve, Conchol. icon., X, Soletellina, Sp. 17. 
