358 DR. GWYN JEFFREYS ON THE MOLLUSCA OF THE [May 20, 



Eulima elegantissima, for which he misquoted Montagu, appears to 

 be E. polita. Not O. lactea of d'Orbigny, nor of Dunker, uor of 

 Angas. 



This common species is consequently variable as regards the 

 straight or oblique direction of the ribs, as well as the comparative 

 breadth of the shell. Tlie pillar has occasionally a tooth-like fold. 



\y 37. Odostomia siNuosA \ Jeffreys. (Plate XXYII. fig. 1.) 



Shell resembling a short pyramid, rather thin, semitranspareut 

 and glossy: sculpture, numerous, fine, flexuous and close-set longi- 

 tudinal ribs, arranged obliquely, and commencing abruptly at the 

 top of each vpliorl, and not continued below the periphery ; there 

 are about 25 on the last whorl ; the first or nuclear whorl is, as 

 usual, quite smooth : colour white : spire rather short, and ending 

 in a sharp point : ivhorls 8 (exclusive of the nucleus), convex and 

 rapidly enlarging ; the last occupies more than two fifths of the 

 sliell : suture narrow and oblique : month irregularly rbomboidal, 

 equal in length to between one third and one fourth of the spire : 

 outer Up inflected at the top, gently curved in the middle, and semi- 

 circular at the bottom : inner lip expanded and thickened : tooth or 

 columellar fold slight but distinct. L. 0'175. B. O'Oo. 



•Porcupine' Exp. 18/0: Med. St. Adventure Bank. A single 

 specimen. 



Distribution. Mediterranean (Italian Exp.), off west coast of Africa 

 ('Talisman' Exp.); 681 fms. 



Allied to 0. lactea, but differs in its more conical and less cylin- 

 drical shape, being proportionally broader at the base, and the ribs 

 are more decidedly flexuous and oblique. In Chemnitzia obliquata, 

 of Philippi, the whorls are fewer and more tumid. 



, 38. Odostomia pusilla, Philippi. 



Chemnitzia pusilla, Phil. Moll. Sic. ii. p. 224. t. xxviii. f. 21. 

 O. pusilla, B. C. iv. p. \67, v. p. 215, pi. Ixxvi. f. 4. 



'Porcupine' Exp. 1870 : Atl. St. Vigo B. ; Med. 50, Adventure 

 Bank. 



Distribution. Birterbuy Bay, W. Gal way (Walpole), British 

 Channel and South of England, Atlantic coasts of France, throughout 

 the Mediterranean and Adriatic, and Madeira ( Watson) ; 1 0-100 fms. 



Fossil. Pliocene : Biot, Italy. Post- tertiary : Morea and Rhodes. 



On further consideration I must hesitate in considering this species, 

 which I described and figured under the above name, as that of 

 Philippi. The size given by him is much smaller, the ribs are said 

 to be set obliquely, and he noticed transverse or spiral strise, which 

 my species does not possess. Judging from the excellent figure 

 (plate 21, fig. 12) of " Turbonilla gradata, Monterosato," in the 

 ' Mollusques du Roussillon ' of Messrs. Bucqnoy, Dautzenberg, and 

 Dollfus, which represents a variety of the present species, I am 

 inclined to adopt the latter name. It is certainly distinct from O. 

 lartea and its varieties. 



' Full of I'urre?. 



