236 Descriptions of New Species of Achatinella. 



slate color; apex somewhat acute; spire convexly conic; 

 suture marginate, well impressed; whorls 6^, convex; coluruel- 

 lar fold central, white, strong ; aperture truncately auriform, 

 white within ; peristome thickened within ; with external 

 margin unreflected, arcuate, acute ; with columellar margin 

 dilated, adnate ; parietal margin wanting. 



Length 0.80 inch (20§ millim.) ; breadth 0.42 inch (10§ 

 millim.). 



Length of body whorl 0.55 inch (14 millim.). 



Average weight 6.00 grains. 



Station. — On the Ki (Cordyline terminalis) and other leaves. 

 J. T. G. ! 

 Habitat. — Waimea, Oahu. J. T. G. ! 



Var. b. — "With the two bands uniting in one broad black belt. 

 Yar. c- — With numerous black spiral lines. 



Remarks. — A rare species, and of great interest on account 

 of its affinities, which connect it with species so different from 

 each other. A. glauca, delta, phaiozona, and zonata Nob. are 

 certainly not very similar ; but this species seems to connect 

 itself directly with varieties of each of these species. 



56. Achatinella diniorpha. 



Plate VIII. Fig. 56. 



T. sinistrorsa, interdura dextrorsa, imperforate, turrita, solida, nitida, 

 striata, alba vcl lutea, fascia 1 fusca, suturali ornata ; apice obtusula ; spira 

 turrita; suturamargiuata, modice impressa, nigro-fusca ; anfr. 0, eonvexis; 

 plica columellari mediana, alba vcl rosea, uiediocri ; apcrtura truncato- 

 ellipsoidea, intus alba ; pcrist. intus subincrassato ; margine externo 

 recto, arcuato, acuto ; columellari dilatato, adnato ; parietali nullo. 



Shell sinistral, sometimes dextral, imperforate, turreted, solid, 

 shining, striated, white or yellow, with a brown sutural band ; 

 apex rather obtuse ; spire turreted ; suture marginate, mode- 



