Otigmal DescriptioJis of Achatinella. 117 



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

 suture distiucftly 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 subconi pressed; 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. 



A. lignaiia Gk. Ann. Lj-c. New York, vi, 1S56, 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 regularlj' 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 slighth^ expanded and refle(5ted anteriorly; columellar 

 margin dilated, white, unattached; parietal margin wanting. 



I^ength 0.80 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. induta. 



Var. C. More elongate. 



Length 0.75 in. (ig 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, distincftly characterized; the latter 

 being more strongly sculptured, having the aperture more elon- 

 gately oval, and the suture more distincftly margined. 



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

 intOy4. splendida Newc, but is distinguished by its smaller size 

 and stronger columellar folds. Rather rare. 



A'ar. E. White. This passes into A. attemiata Pfr. 



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



Var. G. Pale vellowi.sh brown. Passes into A. crocea Nob. 



