70 Gray on He.lkina. 



reflexo, incrassato, albo; columella partim callosa, labiis tenuibus, 

 postice subunidentatis. 



West Indies. Mountains, woods. Mus. Nost. 



Shell very depressed, ovate, pellucid, brown, very finely spirally 

 and concentrically striated, above and below rather convex. Pe- 

 ristome thickened, reflectedj white, with two sinuations where the 

 teeth are in the next section, base of the columella covered over, 

 but not convex : inner lip thin, with a small tooth at the back 

 angle of the aperture. Axis nearly -^, diameter -^^ of an inch. 

 ***** Peristome reflected, tzco-ioothed : base of the columella 

 concave, imperforate ; operculum simple. 



15. Helicina aureola. 



Testa depresso-ovata, spira conica, subtus subconvexa, fusci, 

 spiraliter striata, striis albidis, rugosis. Peristoraate retiexo, in- 

 crassato, albo, bidentato ; columella basi concava. 



Cochlea n. 12. Brown Jam. t. 40, /. 3. 



/3. excoriata. Testa aurantia vel flava. 



Helix aureola. Ferrussac Hist, de Moll. n. 90, tab. 



Shell depressed ovate, spire conical, beneath rather convex^ 

 brown, finely spirally striated, striae white, rugose, transversely 

 subplicate, peristome thickened, reflected, white, with two teeth, 

 one in iYve front and one at the base of the aperture, base of the 

 columella concave, imperforate; axis ^^^, diameter ^^ of an 

 inch. 



This shell is brown when complete, but when the epidermis is 

 worn off it becomes orange or pale yellowish, according to the 

 degree of bleaching to which it has been exposed. 



The following species, which certainly belong to this genu*, 

 I have not seen, and therefore have copied their descriptions from 

 the work in which they are mentioned. 



16. Helicina orbiculata. 



'• Shell, sub-globular, spire not prominent, but more than con- 

 vex, lateral line somewhat convex, whorls five, obsoletely striated 

 across, regularly rounded ; colour, pale greenish, yellowish, or' 

 slightly tinted with reddish, particularly on the body, and mar- 

 gined above by an obsolete white line, on the middle of the 

 body a white vitta revolves, sometimes obscure or wanting, aptr- 



