Original Descriptions of Achatinclla. 91 



within ; with external margin somewhat reflected, arcuate ; colu- 

 mellar margin forming an obtuse, sinuous ridge with a small 

 umbilical cleft behind it ; parietal margin thin. 



Length 0.90 in. (23 mill.), breadth 0.50 in. (13 mill.). 



Length of body whorl 0.65 in. (16 1-2 mill.). 



Average weight 9.00 grains. 



Remarks. It is allied to A. ovata Newc, with which it is 

 associated geographically, but differs from it in its broader form 

 and white lip. The dark coloring of the body whorl abruptly ter- 

 minates near the external margin of the peristome, leaving a white 

 border about an eighth of an inch in width around the outside of 

 the lip, whereas in A. bulimoides and other allied species the color 

 becomes darker on this portion of the shell, though the lip itself be 

 white. Dextral specimens are very rare. The coloring of the 

 darker portion of the shell varies in different specimens from a 

 dirty cream to slate color, but the ashy color given in the descrip- 

 tion is the most common. — Gk. 



Hab. Kahana.— Gk. 



139. Achatinella spadicea Gulick. 



A. spadicea Gk. Ann. Lye. New York, vi, 185S, p. 247, pi. viii, fig. 65. 



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

 ated, chestnut-brown, with a white sutural band ; apex rather 

 obtuse ; spire convexly conic ; suture marginate, moderately im- 

 pressed ; whorls 6, convex ; columellar fold central, white, strong; 

 aperture truncately auriform, subangulated, white within ; peris- 

 tome thickened within, very dark brown ; with external margin 

 scarcely reflected anteriorly, compressed ; columellar margin 

 strong, callous, adnate ; parietal margin very thin. 



Length 0.73 in. (18 1-2 mill.), breadth 0.43 in. (11 mill.). 



Length of body whorl 0.50 in. (13 mill.). 



Average weight 640 grains. 



Remarks. The white sutural band is continued up to the very 

 tip of the nuclear whorls, in a manner quite different from what is 

 seen in the bands of A. obliqua and other species of this group. — Gk. 



Hab. Kahana.— Gk. 



140. Achatinella oomorpha Gulick. 



A. oomorpha Gk. Ann. Lye. New York, vi, 1S5S, p. 246, pi. viii, fig. 64. 



vShell dextral, perforate, ovate, solid, shining, striated, ash, or 

 ash-brown, with two obscure brown bands, white beneath the suture; 

 apex rather obtuse, chestnut-brown ; spire convexly conical ; suture 

 marginate, moderately impressed; whorls 6 1-2, convex; colu- 

 mellar fold central, white, strong; aperture truncately auriform, 



