90 Original Descriptions of Achatinella. 



Shell subimperforate, dextral, conic-ovate, somewhat striate, 

 under a lens very minutely decussate, shining, dark brown, en- 

 circled with two blue-white bands ; spire convex-conic, apex some- 

 what obtuse ; suture quite simple ; whorls 6, hardly convex, the 

 last slightly shorter than the spire, base rotundate ; aperture 

 hardly oblique, truncate-oblong ; columellar fold obsolete, scarcely 

 twisted ; lip strongly thickened within, dextral margin narrowly 

 reflexed, columellar margin dilate, subadnate. 



Hab. Kahana. 



This seems to be a dark form of A. ovata Newc. 



137. Achatinella cervina Gulick. 



A. carina Gk. Ann. L,yc. New York, 1S5S, vi, p. 241, pi. viii, fig. 62. 



Shell sinistral, scarcely perforate, ovate-conic, rather thin, 

 shining, striated, fawn-colored, with obscure brown spiral lines; 

 apex subacute ; spire convexly conic ; suture obsoletely margined, 

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

 white, sublamelliform, well twisted ; aperture sinuately oval, white 

 within ; peristome slightly thickened within ; with external mar- 

 gin unrenewed, arcuate ; columellar margin dilated, adnate ; pa- 

 rietal margin wanting. 



Length 0.78 in. (20 mill.), breadth 0.45 in. (11 2-5 mill.). 



Length of body whorl 0.55 in. ( 14 mill.). 



Average weight 3.80 grains. 



Remarks. I have ventured to separate this from A. ovata 

 with which Dr. Newcomb placed it, who supposed that its lack of 

 some of the important characteristics of that species was owing to 

 the immaturity of specimens. But even if the specimens were all 

 immature, unless my eye is greatly deceived in tracing its affini- 

 ties, it may be safely considered more nearly allied to A. bitddii 

 Newc, or indeed to all the numerous species of that section of the 

 genus, than to any one of the species of the Section Bulimella 

 Pfeiffer, to which A. ovata Newc. belongs. — Gk. 



Hab. Kahana; very rare. — Gk. 



138. Achatinella obliqua Gulick. 



A. obliqua Gk. Ann. I/yc. New York, vi, 185S, p. 245, pi. viii, fig. 63. 



Shell sinistral, subperf orate, ovate, obliquely truncated at the 

 base, solid, shining, striated, of ashen-lead color, with a broad 

 white band beneath the suture ; apex obtuse, of a yellowish white 

 color ; spire convexly conical ; whorls 6, subconvex, the last large; 

 columellar fold central, white, strong ; aperture oblique, trttn- 

 cately auriform, nearly white within; peristome white, thickened 



