Descriptions of New Species of Ackatinella. 217 

 41. Achatinella pliuiiaf a. 



Plate VII. Fig. 41. 



T. sinistrorsa, imperforata, ovato-conica, solida, nitida, striata, cinerea, 

 fusco-strigata ; apice subacuta ; spira, conica, leviter convexa ; sutura 

 marginata, modice impressa, alba ; anfr. 6-£, convexiuscidis ; plica, colu- 

 mellari mediana, alba, valida, apertura parum obliqua, truncato-auri- 

 formi ; perist. subacute-, intus valde incrassato ; margine colurnellari 

 dilatato, adnato ; parietali nullo. 



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

 ated, cinereous, with oblique brown streaks; apex subacute; 

 spire conic, with outlines slightly convex ; suture marginate, 

 moderately impressed, white ; whorls 6£, somewhat convex ; 

 columella!* fold central, white, strong; aperture somewhat 

 oblique, truncately auriform ; peristome subacute, well thick- 

 ened within ; with columellar margin dilated, adnate ; parietal 

 margin wanting. 



Length 0.90 inch (23 mill.) ; breadth 0.48 inch (12£ mill.). 



Length of body whorl 0.63 inch (16 mill.). 



Length of aperture 0.44 inch (11 mill.). 



Average weight 8.50 grains. 



Station. — On the leaves and branches of trees. J. T. G. ! 

 Habitat.— Wm, Oahu. J. T. G. ! 



Var. b. — Bluish grey, suture of the same color, lip thinner. 



Var. c. — Of ashy chestnut color, with black bands. 



Yar. d. — Pale, streaked with light fawn brown, sutures 

 white. 



Yar. e. — Radiated with light brown, sutures the same, lip 

 less thickened, columellar fold tuberculate. 



