258 j\rr. E. A. Smitli on Moll asca from the 



Cardita eleyantula, var. conferta, Smith. 



Cardita eleyantula, Deshayes ; Smith, Ann. & Mag. Nat. Hist. 1904, 

 vol. xiv. p. 9. 



Hub. Station 328, S. of Lower Burmah, 61 fath. 



The two specimens from the above locality and tho^e 

 already recorded in the ' Annals ' are not quite identical witli 

 Deshayes's type. They have a few more ribs, the sulci 

 between them are not quite so deep, and the nodules on the 

 costse are closer topjether. However, I am of opinion that a 

 more extended series of specimens would show that these 

 differences were not of specific value. 



Crassatellistes omanensis, sp. n. 



Testa C. ahnipUe, Sowb.*, similis, sed major, magis compressa, 

 costis concentricis postice baud interruptis ; valvae mediocriter 

 erassae, iatiis et extra albidae. 



Longit. 35 mm., alt. 23, diam. 17. 



Hab. Station 341, Gulf of Oman, 230 fath. 



Beyond its superior size, rather compressed form, and 

 continuous costse there is little to distini^uish this form from 

 its South-African congener. The outline is very similar, 

 the radiating microscopic striation is the same, the strength 

 of the costse, the character of the lunule, the escutcheon, the 

 hinge, the scars, and the creuulation of the edge of the valves 

 are all very much alike in both forms. 



Abra maxima (Sowerby). 



Ahra ?«nr.rma, Sowerby ; Smith, Ann. & Majr. Xat. Hist. 1894, vol. xiv. 

 pi. V. figs. 5, 6 ; 1895, vol. xvi. p. 10 ; 1904, vol. xiv. p. 1 1 . 



Hab. Station 263, off N.E. coast of Ceylon, 665-771 fath., 

 sand and soft green mud ; Station 265, off N. of Cevlon, 

 225-591 fath., mud ; Station 299, Gulf of Oman, 1299 fath. ; 

 Station 301, off Mckran coast, 1000 fath.; Station 321, 

 ofl' S. of Ceylon, 660 fath. ; Station 327, W. of Burmah, 

 419 fath. 



Abra affinis, Smith. 



Abraaffinis, Smith, Ann. & Mag. Nat. Hist. 1899, vol. iv. p. ioO; 

 1904, vol. xiv. p. 11; lUust. Zool. 'Investigator,' Moll. pi. xiii. 

 tigs. 2, 2 a. 



Hub. Station 265, off X. of Ceylon, 225-594 fath., mud. 

 A single specimen, with the preceding species. 



* ' Marine Invert. S. Africa," vol. iv. Mollusca, p. 10, pi. vi. fig. 15, as 

 Crassatella. 



