238 Descrijrtio?is of New Species of Achatinclla. 



•within; peristome thickened within; with external margin 

 unreflected, slightly arcuate ; columellar margin dilated, °.dnate ; 

 parietal margin -wanting. 



Length 0.70 inch (18 millim.) ; breadth 0.42 inch (10| millim.) . 



Length of body whorl 0.51 inch (13 millim.), 



Average weight 4.60 grains. 



Station. — On the leaves of the Pua, Ahakea, and Lama. 

 J. T. G. ! 



Habitat. — Waimea, Pupukea, "Waialei, Kahnkri, and Hauula, 

 Oahn. J. T. G. ! Kaawa, Oahu. J. S. Emerson ! 



Remarks. — Nearly a third of the specimens from Waimea 

 and Pupukea are dextral, but in Waialei, the metropolis of the 

 species, they are always sinistral. 



58. Achatinella zoiiata. 



Plate VIII. Fig. 58. 



T. sinistrorsa, interclum dextrorsa, imperforate, ovato-conica, solida, 

 nitida, striata, alba, vel lutescente, nigro-trifasciata ; apico acutiuscula ; 

 spira convcxiusculo-conica, ; sutura, marginata, modice impressa; anfr. 

 6, convexiusculis ; ultimo regularit or rotundato; plica columellari mc- 

 diaua, rosea vel alba, mediocri ; apertura scmiorbiculari, intus all'.') ; 

 perist. intus subincrassato ; margine externo recto, arcuato, acuto ; 

 columellari dilatato, adnato; parietali nullo. 



Shell sinistral, sometimes dextral, imj^erforate, ovate-conic, 

 solid, shining, striated, white or yellowish, with a brown sntural 

 band, and two black bands, one entering the aperture ; apex 

 somewhat acute ; spire conical, with outlines slightly convex ; 

 suture marginate, moderately impressed ; whorls 6, convex ; 

 the last regularly rounded ; colnmellar fold central, rose or 

 white, moderately developed ; aperture seraiorbicular, white 

 within ; peristome slightly thickened within ; with external 

 margin unreflected, arcuate, acute ; columellar margin dilated, 

 adnate ; parietal margin wanting. 



