Descriptions of New Species of Achatinella. 181 



polish, of a brown succineous color, and very finely striated; 

 apex subacute ; spire convexly-conical ; suture simple, lightly 

 impressed ; whorls 6, somewhat convex ; columella a little 

 oblique, white, and plicately truncated ; aperture truncately 

 oval ; peristome simple, with dextral margin unreflected, acute, 

 arcuate ; columellar margin dilated, thin, white. 



Length 0.33 inch (8£ mill.) ; breadth 0.17 inch (4^ mill.). 



Length of body whorl 0.21 inch (4^ mill.). 



Weight 0.25 grain. 



Station. — On the ground. J. T. G. ! 



Habitat. — Mountain forests of Mokuleia, Oahu. J. T. G. ! 



Remarks. — Cannot be compared with any species yet de- 

 scribed. Resembles somewhat A. succinea Nob,, but has not 

 the glassy polished appearance of that species.' 



9. Achatinella 1 timid a. 



Plate VI. Fig. 9. 



T. dextrorsa, imperforata, ovato-conica, tenui, nitida, pellucida, cornea, 

 sub lente levissime striata ; apice obtusula, pallida ; spira convexo-coni- 

 ca ; sutura simplici, vix impressa, fusco-lineata ; anfr. 7, subplanis ; plica 

 columellari mediana, alba, lamelliformi ; apertura pyriformi ; perist. sim- 

 plici, margine dextro recto, semicirculari ; columellari dilatato, albo, 

 adnato ; parietali tenuissimo, albo. 



Shell dextral, imperforate, ovate conic, thin, shining, pellucid, 

 corneous, with a dark line accompanying the suture, microsco- 

 pically very finely striated ; apex somewhat obtuse, pallid ; 

 spire convexly conical ; suture simple, scarcely impressed ; 

 whorls 7, rather fiat ; columellar fold central, white, lamelli- 

 forrh ; aperture pyriform ; peristome simple ; with dextral 



DECEMBER, 1856. 23 Ann. Lyc. Nat. Hist. Vol. VI. 



