Original IDescripiions cf Achatinclla. 87 



equal to 2-5 of the length, base rotuudate ; aperture oblique, trun- 

 cate-obauriforni ; columellar fold high, strong, twisted ; lip edged 

 with black, outer margin contraded, slighth- expanded, columellar 

 margin dilated, subadnate. 



Hab. Kahana. 



130. Achatinella corrugata Gulick. 



A. coriitgata Gk. Ann. Lye. New York, 1858, vi, p. 248, pi. viii, fig-. 66. 



Shell dextral. imperforate, ovate, solid, .shining, striated, green; 

 apex subacute, pale ; spire convexly conic ; suture margined, mod- 

 erately impressed ; whorls 5 1-2, convex; the last rugose; colu- 

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

 white within ; peristome thickened within, white, sometimes mar- 

 gined with brown ; with external margin scarcely refiedled anteri- 

 orly; columellar margin dilated, adnate ; parietal margin wanting. 



Length 0.72 in. (18 1-3 mill.), breadth 0.40 in. (10 mill.). 



Length of bod}' whorl 0.50 in. (13 mill.). 



Average weight 5.30 grains. 



Remarks. The color is often nearly black, and sometimes 

 reddish yellow. 



It has been placed by Dr. Newcomb with his A. decipiens, but 

 is more nearly allied to A. riigosa Newc. From the latter it differs 

 in its usually white lip, and the more convex outlines of its spire. 

 The color also fades gradually towards the apex, instead of termi- 

 nating abruptly in white, as in A. ritgosa. vSinistral specimens 

 have been found. — Gk. 



Hab. Hakipu. — Gk. 



131. Achatinella torrida Gulick. 



A. lorrida Gk. Ann. I,yc. New York, 1S5S, vi. p. 250, pi. viii, fig. 68. 



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

 what rugose, green or fulvous ; apex subacute, chestnut ; spire 

 conic; suture lightly margined, white, moderately impressed; 

 whorls 6, convex ; columella with a strong white fold near the 

 body whorl ; aperture oblique, truncately auriform, white within ; 

 peristome white, thickened within ; with external margin scarcely 

 reflecfted anteriorly, slightly compressed ; columellar margin 

 dilated, adnate ; parietal margin wanting. 



Length 0.68 in. (17 1-3 mill.), breadth 0.38 in. (9 2-3 mill.). 



Length of body whorl 0.48 in. (12 mill.). 



Average weight 4.50 grains. 



Var. B. With black spiral lines. 



