Descriptions of Neil) Species of Achatinella. 191 



Length 0.30 inch (7f mill.). Breadth 0.14 inch (3£ mill.). 

 Length of body whorl 0.17 inch (4§ mill.). 

 Average weight 0.17 grain. 



Station. — On the ground. J. T. G. ! 

 Habitat.— Palolo valley, Oahu. J. T. G. ! 



Remarks. — It is found with A. siibula Not)., and is allied to 

 it, but is smaller, thinner, and less polished, with spire less 

 drawn out, and columella not so strongly plaited. 



19. Achatinella stibula. 



Plate VI. Fig. 19. 



T. dextrorsa, imperforate, subulata, tenni, nitida, translucida, fusco- 

 cornea, levissime striata ; apicc obtusa, pallida ; spira turrita ; sutura 

 simplici, impressa ; anfr. 9, convexis ; plica colurnellari mediana, alba ; 

 apertura sinuato-lunata ; perist. simplici ; margine dextro recto, arcuato ; 

 columella™ dilatato, albo, adnato ; pavietali nullo. 



Shell dextral, imperforate, elongate, thin, shining, translu- 

 cent, dark corneous, very finely striated ; apex obtuse, whitish ; 

 spire turreted ; suture simple, impressed ; whorls 9, convex ; 

 columellar fold central, white ; aperture sinuately Innate ; peri- 

 stome simple ; with dextral margin unreflected, arcuate ; colu- 

 mellar margin dilated, white, adnate ; parietal margin wanting. 



Length 0.45 inch (11 £ mill.). Breadth 0.17 inch (44 mill.). 



Length of body whorl 0.23 inch (6 mill.). 



Average weight 0.G0 grain. 



Station. — On the ground. J. T. G. ! 



to* 



Eabitat.— Palolo valley, Oahu. J. T. G. ! 



