232 Descriptions of New Species of Achatindla. 



The most nearly allied species is A. curia ISTewc, which is 

 readily distinguished by its peculiar marking and smaller 

 size. 



51. Acliatinella glauca. 



Plate VIII. Fig. 51. 



T. sinistrorsa, raro dextrorsa, imperforata, acumhiato-ovata, solida, 

 nitida, striata, flavescente-plumbea, nigro-bifasciata ; apice acutius- 

 cula, albida ; spira subconvexo-conica ; sutura marginata, modice im- 

 pressa ; anfr. 6, convexis ; plica colurnellari mediana, alba vel roseo- 

 albida, mediocri ; apertura sinuato-ovali, intns albida ; perist. intus 

 incrassato ; margine externo recto, arcuato, acuto, fuscodiinbato ; colu- 

 inellari dilatato, adnato ; parietal! nullo. 



Shell sinistral, rarely dextral, imperforate, acuminately ovate, 

 solid, shining, striated, fawn or lead-colored, with two black 

 bands, one entering the aperture ; apex somewhat acute, white ; 

 spire conic, with slightly convex outlines; suture marginate, 

 moderately impressed ; whorls 6, convex ; columella!- fold 

 central, white or pale pink, moderately developed ; aperture 

 sinuately oval, white within ; peristome thickened within ; 

 with external margin unreflected, arcuate, acute, bordered 

 with brown ; columellar margin dilated, adnate ; parietal 

 margin wanting. 



Length 0.66 inch (17 millim.); breadth 0.36 inch (9 millim.). 



Length of body whorl 0.44 inch (11| millim.). 



Average weight 3.90 grains. 



Station. — On trees. J. T. G. ! 

 Habitat. — Kawailoa, Oahu. J. T. G-. ! 



Var. b. With a third brown sutural line. 



Var. c. With but one black spiral band passing above the 

 suture. 



Var. d. With a white band encircling the base between the 

 two black bands : very rare. 



