Original Descriptions of Achatinella. 117 



light brown zigzag stripes; spire coneave-turreted, slightly obtuse; 

 suture distinctly very finely margined; whorls 5 1-2, the upper 

 flat, the following convex, the last nearly equal to 3-7 of the length, 

 rotundate, base subcompressed; aperture oblique, subtetragonal- 

 auriform; columella strong, compressed, tongue-like; lip acute, 

 shortly expanded, thickened within, basal margin with the dilated 

 columellar margin forming an angle within. 



Hab. Honokowai. — Bald. 



This shell seems to be the same as A. terebra Newc. 



189. Achatinella lignaria Gulick. 



.1. lignaria Gk. Ann. Lye. New York, vi, 1856, p. 209, pi. vii, fig. 35. 



Shell dextral, perforate, ovate-conic, solid, more or less shin- 

 ing, microscopically minutely decussated, yellowish ivory white, 

 sometimes streaked; apex subacute, white, obliquely marked with 

 brownish yellow; spire regularly conical; suture moderately im- 

 pressed, scarcely margined; whorls 6 1-2, somewhat convex; the 

 last equal to 66-100 of the length; columellar folds strong, white; 

 aperture somewhat oblique, sinuously oval; peristome thickened, 

 sometimes slightly expanded and reflected anteriorly; columellar 

 margin dilated, white, unattached; parietal margin wanting. 



Length 0.S0 in. (20 1-3 mill.), breadth 0.41 in. (10 2-5 mill.). 



Length of aperture 0.35 in. (9.00 mill.). 



Average weight 5.50 grains. 



Var. B. More ventricose ; aperture nearly semiorbicular. 

 This variety passes into A. indnta. 



Var. C. More elongate. 



Length 0.75 in. (19 1-3 mill.), breadth 0.36 in. (9.00 mill.). 



Length of aperture 0.31 in. (8 mill.). 



Average weight 3.50 grains. 



This variety approaches and passes into A. terebra Newc. 

 The two species are, however, distinctly characterized; the latter 

 being more strongly sculptured, having the aperture more elon- 

 gately oval, and the suture more distinctly margined. 



Var. D. With black or brown spiral bands. This passes 

 into A. splendida Newc, but is distinguished by its smaller size 

 and stronger columellar folds. Rather rare. 



Var. E. White. This passes into A. attenuata Pfr. 



Var. F. Pale ash color. Passes into A. undosa Nob. 



Var. G. Pale yellowish brown. Passes into A. croeea Nob. 



