Descriptions of New Species of Achatinella. 215 



sutura marginata, modice impressa ; anfr. fere V, rnodice convexis ; plica 

 columellari mediana, alba, valida ; apertura parum obliqua, limato- 

 rotundata ; perist. acuto, intus valde incrassato ; margine columellari 

 dilatato, adnato, vel interdum subpatente ; parietali nullo. 



Shell sinistral, scarcely perforate, oblong-ovate, solid, shining, 

 striated, white, with from 1 to 6 black or chestnut bands vary- 

 ing in width ; apex subacute ; spire convexly conical ; suture 

 marginate, moderately impressed ; whorls 7, moderately convex ; 

 columellar fold central, white, strong ; aperture a little oblique, 

 Innately rounded ; peristome acute, well thickened within ; 

 with columellar margin dilated, adnate, or sometimes slightly 

 detached ; parietal margin wanting. 



Length 0.86 inch (22 mill.) ; breadth 0.50 inch (12| mill.). 



Length of body whorl 0.64 inch (164 mill.). 



Length of aperture 0.43 inch (11 mill.) ; an average sized 

 specimen. 



Length of a large specimen 1.00 inch (25| mill.). 



Average weight 10.50 grains. 



Station. — On the Kukui {Aleurites triloba) and Ki (Cordyline 

 Urminalis). J. T. G. ! 



Habitat. — Keowaawa, Oahu. J. T. G. ! 



Var. a. — With one broad band encircling the base. 



Var. b. — With two dark bands, one entering the aperture, 

 the other revolving above the suture. This and var. a are 

 sometimes found in Kailua, Oahu. 



Var. c. — White, with three or four bands at the base. 



Var. d. — Without bands, but more or less streaked with 

 fawn brown. 



Var. e. — Dark brown, with two white bands, one sutural, the 

 other on the periphery of the body whorl. 



Va/r. f. — Brown, with one or more black bands. 



