248 Descriptions of New Species of Achatinella. 



externo antice vix reflexo, substricto ; columcllari valido, calloso, adnato ; 

 parictali tenuissimo. 



Shell sinistral, imperforate, conic-ovate, solid, shining, 

 striated, chestnut-brown, with a white sutural band ; apex 

 rather obtnse ; spire convexly conic ; suture marginate, mode- 

 rately impressed ; whorls 6, convex ; columellar fold central, 

 white, strong; aperture truncately auriform, subangulated, 

 white within ; peristome thickened within, very dark brown ; 

 with external margin scarcely reflected anteriorly, compressed ; 

 columellar margin strong, callous, adnate ; parietal margin very 

 thin. 



Length 0.Y3 inch (18$ millim.) ; breadth 0.43 inch (11 millim.). 



Length of body whorl 0.50 inch (13 millim.). 



Average weight 6.10 grains. 



Station.— -On trees. J. T. G. ! 

 Habitat. — Kahana, Oahu. J. T. G. ! 



Remarks. — The white sutural band is continued up to the 

 very tip of the nuclear whorls, in a manner quite different 

 from what is seen in the bands of A. obliqua and other species 

 of this group. 



C6. Acliatinella corrugata. 



Plate VIII. Fig. 66. 



T. dcxtrorsa, imperforata, ovata, solida, nitida, striata, virentc ; apice 

 subacuta, pallida ; spira convcxo-conica ; sutura marginata, rnodice im- 

 pressa ; anfr. 5^, convexis ; ultimo rugoso ; plica columcllari mediana, 

 alba, valida ; apertura truncato-auriformi, iutus alba ; perist. intus 

 incrassato, albo, interdum fusco-limbato ; margine externo autice vix 

 reflexo, arcuato ; columellari dilatato, adnato ; parictali nullo. 



Shell dextral, imperforate, ovate, solid, shining, striated, 

 green ; apex subacute, pale; spire convexly conic; suture 

 margined, moderately impressed ; whorls 5£, convex; the last 



