ODOSTOMIA. 283 



O. GLABRATA, Muhlfelclt ? 



Nearly oblong, thin, smooth, shining ; whorls ventricose, 

 rather oblique, of rapid increase, only four and a half, the last 

 equal to the rest united ; outer lip arched ; pillar lip greatly 

 arched ; fold retired, and obscure ; no umbilicus. 



Plate XCVllI. fig. 3. 



Helix ylahrata, Mko. Mi'hlf. Vcrhandl. Berlin. Gesel. ]o24, vol. i. p. 218, pi. o 



(= 9), f. 10.' 

 Rissoa punctulum, Philippi, Moll. Sicil. vol. i. p. 154, pi. 10, f. 11 .'^ 

 „ r/lahraia, Philippi, Moll. Sicil. vol. ii. p. 130 ? 



Mr. Barlee has very lately forwarded us three examples 

 of a species of Odosfomia, that will not specifically coincide 

 with any of our native shells. It approaches so nearly 

 to the general aspect of Rissoa glabrata (as figured hy 

 Philippi ; we do not possess the shell) that, although no 

 mention is made by that author of its obscure tooth, and 

 the whorls are described as only moderately convex, we 

 prefer to use the appellation glahrata (since it has not, to 

 our knowledge, been applied to a member of this genus, 

 and consequently may be retained, even if the conjectured 

 identification prove erroneous) rather than fabricate a new 

 epithet for a possibly known object. This species, which is 

 very thin (and consequently more or less semi-transparent) 

 is perfectly smooth, and of an uniform shining white ; it 

 has a tapering oblong shape, and ends (or rather commences) 

 in a large and very blunt, but not depressed, somewhat 

 mammillary apex. The spire, which merely equals the 

 length of the body-whorl, is composed of only three or 

 three and a half turns, which are of quick longitudinal 

 increase (hence the penult is high), and are very profoundly 

 divided, owing to their being more or less ventricose, by 



