Descriptions of New Species of Achatinella. 211 



obliquely marked with white and yellow ; spire conical ; suture 

 simple, slightly impressed ; whorls 6, somewhat convex, the 

 last slightly flattened in the middle, equal to yoV of the length; 

 columellar fold moderately developed, white ; aperture slightly 

 oblique, sinuously oval, snowy white within ; peristome not 

 expanded, moderately thickened within ; with columellar mar- 

 gin dilated, white, unattached ; parietal margin wanting. 



Length 0.70 inch (18 mill.) ; breadth 0.40 inch (10 mill.). 



Length of aperture 0.37 inch (9| mill.). 



Weight 4.00 grains. 



Station. — . . . . ? It is undoubtedly an arboreal 

 species. 



Habitat. — Waihee, Maui : rare. E. Bailey Jr. ! 



37. AchatiBicIla ustulata. 



Plate VII. Fig. 37. 



T. sinistrorsa, perforata, ovato-conica, ad basin oblique products, 

 solida, vix nitida, striata, et sub lente distincte decussata, fusca, fascia 

 eburnea ad basin cincta ; apice subacuta, albido et fusco tessellata ; spira, 

 conica, curvilineari ; sutura simplici, leviter impressa, linea angusta. 

 alba notata ; anfr. 6^, modice convexis ; ultimo magno, T Vo longitudini3 

 asquante ; plica, columellari, valida, alba, obliqua ; apertura perobliqua, 

 sinuato-ovali ; perist. intus incrassato autice reflexo ; margine columellari, 

 dilatato, albo, patente ; parietali uullo. 



Shell sinistral, perforate, ovate-conic, obliquely produced at 

 the base, solid, scarcely shining, striated, and microscopically 

 distinctly decussated, brown, with a whitish band encircling 

 the base ; apex subacute, tessellated with white and brown ; 

 spire conical, somewhat curvilinear ; suture simple, lightly 

 impressed, marked with a narrow white line ; whorls 6£, 

 moderately convex ; the last large, equal to t/o of the length ; 

 columellar fold strong, white, oblique ; aperture very oblique, 



