Descriptions of New Species of Achatinella. 185 



acute, pallid ; spire convexly conic ; suture simple, lightly 

 impressed ; whorls G£, rather convex ; columellar fold central, 

 white, sublamelliform ; aperture sinuately pyriform ; peristome 

 scarcely thickened within ; with dextral margin unreflected, 

 arcuate ; columellar margin dilated, corneous, adnate ; parietal 

 margin wanting. 



Length 0.33 inch (8£ mill.). Breadth 0.15 inch (4 mill.). 



Length of body whorl 0.21 inch (5-| mill.). 



Average weight 0.17 grain. 



Var. 1). — Smaller, more solid, ovate conic, with lip thickened. 



Station, — On the ground. J. T. G. ! 



Habitat. — Keawaawa, Oahu. J. T. G. ! 



Remarks. — Smaller and more elongately ovate than the pre- 

 ceding. 



13. Aclaaflifliella granifera. 



Plate VI. Fig. 13. 



T. dextrorsa, imperforate, acuminato-ovata, tenui, nitkla, pellueida, 

 vitrea, sub lente vix striata ; apice obtusula ; spira convexo-coniea ; 

 sutura simplici, leviter impressa; anfr. G, convexiusculis ; columella 

 recta, vertical], leviter plicata ; apertura subrhombea ; perist. subin- 

 crassato ; margine dextro recto, arcuato ; columellari dilatato, adnato : 

 parietali tenui. 



Shell dextral, imperforate, acuminately ovate, thin, shining, 

 pellucid, vitreous, scarcely striated beneath the lens ; apex 

 rather obtuse; spire convexly conical; suture simple, lightly 

 impressed ; whorls 6, somewhat convex ; columella not arched, 

 vertical, lightly plicate; aperture subrhomboidal ; peristome 



