10 Mr. EB. A. Smith on Mollusca from the 
Probably one of the smallest, if not actualiy the smallest, 
species in the genus. It has not the appearance of being 
immature. The crenulation of the valve-margins is very 
minute and extends all round excepting beneath the ligament. 
Tellina parvula. (PI. II. tig. 3.) 
Testa parva, equivalvis, inequilateralis, tenuis, pellucido-albida, 
ovata, postice acuminata, mediocriter compressa, concentrice 
tenuiter striata, nitida, carina levi in utraque valva, ab umbone 
usque ad extremitatem posticam decurrente, instructa; valva 
dextra lunulata; umbones parvi, acuti, postmediani; margo dorsi 
anticus leviter declivis, vix arcuatus, posticus brevior, rectiusculus, 
magis obliquus, ventralis late arcuatus; latus anticum magnum, 
curvatum, posticum acuminatum ; dentes cardinales et laterales 
normales ; pagina interna nitida, obsolete radiatim substriata. 
Longit. 15 millim., alt. 11, diam. 5. 
Hab. Station 166, lat. 13° 34' 55” N., long. 80° 32’ 12” E., 
Bay of Bengal, off Coromandel coast, in 133 fathoms; 
Station 176, lat. 13° O01’ 06” N., long. 80° 36’ 56” K., off 
Coromandel coast, in 107 fathoms. 
The narrow lunule is nearly all in the right valve, and is 
bordered by a distinct keel. 
Abra maxima (Sowerby). 
Abra maxima, Smith, Ann, & Mag. Nat. Hist. 1894, vol. xiv. p. 169. 
Hab. Station 112, lat. 13° 47’ 80” N., long. 92° 36’ E., 
west of Andaman Islands, in 561 fathoms. 
This species has now been dredged at four different stations 
in the Bay of Bengal, at depths varying from 128 to 677 
fathoms. 
Abra convexior. (Pl. II. figs. 4, 4a.) 
Testa A. maxime simillima, sed minor et convexior, postice vix 
carinata, umbonibus prominentioribus. 
Longit. 15 millim., alt. 113, diam. 7. 
Hab. Station 172, off Trincomalee, in 200-350 fathoms. 
A. maxima, Sow., A. convexior, and A. philippinensis, 
Smith, are very closely allied. The first is much larger than 
the present species, not quite so triangular, less convex, and 
has more distinct carinations from the beaks behind. ‘To 
show the difference in the convexity, I may state that a 
specimen of A. maxima 23 millim, long is only 6 in diameter, 
whereas an example of A. convexior only 18 in length has a 
thickness of 64. 
