76 Original Descriptio?is of Achatinella. 



109. Achatinella cognata Gulick. 



A. cognata Gk. Ann. Lye. New York, vol. vi, 1S58, p. 240, pi. viii, fig. 60. 



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

 ated, of pale rosy fawn color, with a brown sutural band ; apex 

 subacute ; spire convexly conic ; suture marginate, brown, lightly 

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

 rose-colored, strong ; aperture truncately auriform, within white 

 lightly tinged with rose ; peristome thickened within ; with exter- 

 nal margin unrenewed, arcuate, acute ; columellar margin dilated, 

 adnate ; parietal margin wanting. 



Length 0.75 in. (19 mill.), breadth 0.40 in. (10 mill.). 



Length of body whorl 0.53 in. (13 1-2 mill.). 



Average weight 5.60 grains. 



Var. B. White. 



Var. C. Pale green. 



Remarks. Allied to A. dimorpha Nob. — Gk. 



Hab. Hakipuu. — Gk. Waikane. — Frick. 



no. Achatinella scitula Gulick. 



A. scitula Gk. Ann. Lye. New York, vol. vi, 1858, p. 241, pi. viii, fig. 61. 



Shell sinistral, imperforate, elongately ovate, solid, shining, 

 striated, streaked with brown and pale fawn ; apex subacute ; 

 spire convexly elongate ; suture marginate, moderately impressed ; 

 whorls 6 1-2, convex; columella with a moderately developed 

 white fold near the body whorl ; aperture sinuately ellipsoidal, 

 white within ; peristome well thickened within ; with external 

 margin unreflected, slightly compressed in the middle, with the 

 anterior edge arcuate ; columellar margin dilated, adnate ; parietal 

 margin wanting. 



Length 0.82 in. (21 mill.), breadth 0.42 in. (10 2-3 mill.). 



Length of body whorl, 0.53 in. (13 1-2 mill.). 



Average weight 4.80 grains. 



Remarks. There is a green variety which passes into var. C 

 of the last described species. But in that species the suture and 

 columella are dark, while in this they are light colored. — Gk. 



Hab. Hakipuu. — Gk. 



Mr. Sykes places this with A. decipiens Newc, a shell gener- 

 ally, but perhaps incorrectly, placed in Section Bulimella. It may 

 be related to that shell. The decipiens group is very hard to place 

 with certainty. 



