Descriptions of New Species of Achatinella. 183 



margined with white and thickened within ; with dextral mar- 

 gin arcuate, very slightly reflected anteriorly ; columellar mar- 

 gin dilated, adnate ; parietal margin thin. 



Length 0.30 inch (7f mill.). Breadth 0.17 inch (4£ mill.). 



Length of body whorl 0.21 inch (5£ mill.). 



Average weight 0.25 grains. 



Var. h. — Of a dark resinous hue, with lip and columella 

 white. 



Station. — Under stones, in dry places. Thomas L. Guli-ck. ! 



Habitat. — Mokuleia and Lihue, Oahu. Thomas L. Gulick. ! 



llemarTzs. — In form it differs from A.fumida, being shorter 

 and more inflated ; also in station, as it frequents open fields 

 and hill sides, where it lodges beneath stones. 



li. Achatinella fragilis. 



Bate VI. Fig. 11. 



T. dextrorsa, imperforata, ovata, tenuissima, nitida, pcllucida, vitrea, 

 pallide succinea, sub lente levissime striata ; apice obtusula, ; spira con- 

 vexo-conica ; sutura siruplici, sub-hnpressa ; anfr. 6, convexiusculis ; 

 columella pallide vel fusco-cornea, sub-truncata, vix plicata ; apertura, 

 obovata ; perist. simplici, teuui ; margine dextro recto, arcuate ; cotu- 

 mellari sub-dilatato, corneo, adnato ; parietali tenuissimo. 



Shell dextral, imperforate, ovate, very thin, shining, pellu- 

 cid, vitreous, pale amber colored, microscopically very finely 

 striated ; spire convexly conical ; suture simple, slightly im- 

 pressed ; whorls 6, somewhat convex ; columella pale or brown 

 corneous, slightly truncate, scarcely plicate ; aperture ob ovate ; 

 peristome simple, thin; dextral margin unreflected, arcuate; 



