Btuj of Ben(jal and the Arabinn Sea. 259 



Tcllina iruvancorica, Smith. 



TcUinn travnnrorica, Smith, Ann. Sc Mug. Nat. Hist. 1899, vol. iv. 

 p. 2ii); 1U04, vol. xiv. p. 11; Illust. Zuol. 'Investigator,' Moll. 

 pi. xiii. figs. 1,1a. 



Hub. Stations 259, 337, W. of Malabar coast, 271-300 fatli., 

 green sand and mud. 



These specimens, wliich appear to b.c adult, arc somewhat 

 smaller than those originally (lcscril)cci, and the concentric 

 sculpture is a little finer and closer together. 



Tellina [Arcopagia) Isseli, H. Adams. 



Tellina {Arcopagia) Isseli, II. Adams, Proc. Zool. Soc. 1870, p. 790, 

 pi. xlviii. tig. 10. 



Hub. Station 291, Gulf of Oman, 48-49 fath. 



A single specimen without colour-rays as in the type from 

 the Gulf of Suez, but like it in being marked with a red 

 rust-like stain at the posterior end. 



Tellina [Arcopagia) altissima, sp. n. 



Testa parva, triangulatim rotundata, fere a^quilateralis, valde con- 

 vexa, dilute fusco-albida ; latus auticum acute rotundatum, 

 posticum magis acuminatum, subrostratum ; niargo dorsi utrinque 

 valde declivis, anterior arcuatus, posterior rectiusculus ; ventris 

 margo multum ciirvatus ; valvte hand crassne, leviter nitentes, 

 lineis incrementi teuuibus sculptce, striisque radiantibus tenuis- 

 simis subobsoletis ornatae, intus distinctius radiatim striata), et 

 plus minus albo-fusco tinctoe. 



Longit. 16 mm., alt. 14, diam. 10. 



Hah. Off Port Blair, Andaman Islands, 100 fath. 



Somewhat resembling T. robusta, Hanley, but less solid 

 and not quite of the same form. It is remarkably high m. 

 proportiou to the length. The lateral teeth are long, 

 slender, and remote. 



Macoma blab-ensis^ sp. n. 



Testa oblonga, valde ina^quilateralis, compressa, antice rotundata, 

 postice oblique truncata, sordide albida, concentrice teuuissime 

 striata, striis postice tenuiter lamellosis ; margo dorsi auticus 

 arcuatim descendens, posterior magis obliquus, rectus, brevier, 

 ventralis late curvatus ; valvse mediocriter tenues, subnitentes, 

 et radiatim microscopice striatce; plica postica, ab umbone valvte 

 dextrae radians, vix couspicua ; cicatrix antica elongato-piriformis, 

 postica rotundata ; sinus pallii latus, profundus. 



Longit. 44 mm., alt. ;J1, diam. 11. 



