Original Descriptions of Achatinella. 133 



broad patches towards the base; apex acute; spire concavely conic; 

 suture simple, well impressed; whorls 7, convex, the last large; 

 columellar fold central, brown, lamelliform, nearly transverse; 

 aperture oblique, siuuately lunate, pale pink within; shading to 

 brown near the columella; peristome thin, acute; with external 

 margin unreflected, arcuate; columellar margin dilated, adnate, 

 or sometimes slightly detached; parietal margin wanting. 



Length 0.85 in. (21 3-5 mill.), breadth 0.52 in. (13 1-5 mill.). 



Length of body whorl 0.60 in. (15 1-2 mill.). 



Average weight 7.00 grains. 



Station. On trees and vines. — Rev. J. M. Alexander, 



Remarks. I have a dextral specimen, which is the only one 

 I have seen belonging to any species of this group. — Gk. 



Hab. Honuaula.—(E. Bailey. )Gk. Kula.— Rev. J. M. Alex- 

 ander. 



217. Achatinella erecta Pease. 



A. erecta Pease. J. Conchyl., xvii, 1S69, p. 174. 



Shell dextral, imperforate, somewhat solid, turreted, irregu- 

 larly finely striated, scarcel}' shining, covered with a thin epider- 

 mis; whorls 7, convex, the last equal to 2-5 of the length; suture 

 impressed; columellar fold laminate, callous, hardly oblique; ap- 

 erture ovate; columella arcuate; straw color or yellowish, with a 

 purplish apex. Long. 15, diam. 7 1-2 mill. 



Hab. Kahakuloa, West Maui. — Thaanum. 



I do not know of any other species with which this may be 

 compared. It is not included in the Picta group. 



