1916. | H. B, PRESTON: Aadaman Marine Mollusca. 99 
Tellina viater, Preston. 
Ann. Mag. Nat. Hist., Ser. 8, Vol. XVI, 1915, p. 84, fig. in text. 
Port Blair. 
A number of specimens of this very delicate species which are 
inseparable from the type which is of New Caledonian origin. 
Family SCROBICULARIIDAK. 
Theora hindsiana, sp. n. 
(Figs. 18, 18a, p. 98.) 
Shell allied to 7. ofalina, Hinds’, but differing from that spe- 
cies in its more tumid form, anteriorly excavated and posteriorly 
sloping dorsal margin, broader and more obtusely rounded anterior 
side and more rostrate posterior side. 
Long. 8°25, lat. 13 mm. 
Hab.—Phoenix Bay, Andaman Islands, in 1-3 fathoms, on a 
bottom of muddy sand. 
Named in honour of the late Mr. R. B. Hinds, to whose 
researches are due a large proportion of the known members of the 
group. 
Sub-order ANATINACEA. 
Family CuSpiIDARIIDAE. 
Cardiomya andamanica, sp. n. 
(Figs. 19, 19a.) 
Shell small, convex, pyriform, pure white, sculptured with 
seven minute anterior, eleven coarse 
median, and three fine posterior radiate 
riblets, a considerable smooth gap in- 
tervening between the two last; um- 
bones smali, not prominent; dorsal 
margin anteriorly sloping towards the 
umbones, posteriorly gently curving 
upwards towards the posterior side; 
ventral margin rounded, posteriorly 
contracted ; anterior side steeply slop- 
ing above, rounded below; posterior 
side produced, rostrate, sharply round- 
ed at its extremity. FIG. 19, 1ga.— Cardiomya an- 
Long. 3, lat. 5 (nearly) mm. damanica, sp. n. X 6. 
Hab.—Semiramis Bay, Andaman Is., 
in 2-6 fathoms, on a bottom of fine mud (S. Kemp). 


! Proc. Zool. Soc., 1843, p. 78. 
