200 Descriptions of New Species of Achatine\la, 



Var. c. — With body whorl rounded, not angulated. 



Remarks. — This species is the analogue of A. Tappaniana 

 C. B. Ad. found on W. Maui, but differs from it in its more 

 ventricose form, its angulated body whorl, and more regularly 

 curved lip, besides the difference in coloring. 



29. Achatinella ampulla. 



Plate VII. Fig. 29. 



T. sinistrorsa, interdum subperforata, elongata, subpyriformi, tenuius- 

 cula, nitida, striatula, sub lente vix decussatula, alba, fascia castanea 

 lata basi cingente, et intus aperturam infra suturam volvente, inter- 

 dum superne lincata ; apice subacuta ; spira concavo-conica, interdum 

 decollata ; anfr. 6^, convexis, superne marginatis ; ultimo inflato, T 6 7 6 ? lon- 

 gitudinis ajquante ; columella alba, superne plicata, valde intorta, non 

 tuberculata ; apertura, rotundata ; perist. expanso, reflexo, vix incrassato ; 

 margine columellari reflexo, adnato vel subpatente ; parietali nullo. 



Shell sinistral, sometimes slightly perforate, elongate, subpy- 

 riform, rather thin, shining, finely striate, scarcely decussate 

 beneath the lens, white, with a broad chestnut band encircling 

 the base, and revolving within tbe shell beneath the suture, 

 sometimes with fine spiral lines above ; apex subacute ; spire 

 concavely conical, sometimes decollated ; whorls 6 J, convex, 

 margined above ; the last inflated, equal to //o of the length ; 

 columella white, plaited near the whorl, strongly twisted, not 

 tuberculate ; aperture rounded ; peristome expanded, reflected, 

 very slightly thickened ; with columellar margin reflected, 

 adnate, or slightly detached ; parietal margin wanting. 



Length 0.90 inch (23 mill.) ; breadth 0.51 inch (13 mill.). 



Length of aperture 0.40 inch (10 mill.). 



Weight 6.00 grains. 



Station. — On trees. S. T. Alexander. ! 

 Habitat. — Honukawai, Maui. S. T. Alex. I 



