Orighial Descriptions oj Aihatinella. 45 



Var. C. White, with two dark bands, one entering the aper- 

 ture. Approaches A. fidgcns Nevvc. 



Var. D. White, with yellow or green base. 



Var. E. Yellow, with white bands. 



Var. F. Yellow, fading towards the apex. ' 



Var. G. Green, fading towards the apex. 



Var. H. Green, passing into gray or brown towards the apex. 



Var. I. Green, with white bands. 



Remarks. Differs from A. plumata Nob. in the chara(5ler and 

 arrangement of its colors, and from A . fu/gcns Newc. in the ab- 

 sence of the white sutural band, and the two broad black central 

 bands which characfterize that species. 



The specimens found in Niu do not present the green varie- 

 ties, but incline more to white ; and are also thicker and more 

 ovate in form than those found in Palolo. The average weight of 

 full grown specimens from Niu is about 9.00 grains, that of the 

 Palolo specimens is 7.20 grains. 



I have six or eight dextral specimens belonging to varieties 

 D, E, Gand I.— Gk. 



Hab. Palolo, Waialae, Wailupe and Niu. — Gk. 



The author's own collecftion exhibits a fine series of these 

 beautiful shells. Many of the various color varieties form con- 

 nedling links with other groups ; the shell has been well named. 



54. Achatinella trilineata Gulick. 



A. trilineata Gk. .\nn. Lvc. Xevv York, vi, p. 226, pi. vii, fig. 46. 



Shell sinistral, imperforate, ovate-conic, solid, shining, finely 

 striated, white above, yellow or green at the base, with three black 

 bands, one sutural, one entering the aperture, and the other between 

 the two, revolving just above the suture ; apex somewhat obtuse ; 

 spire conical, slightly convex ; suture with narrow margin, mod- 

 erately impressed ; whorls 6 1-2, rather convex; columellar fold 

 central, white or rose, strongly developed ; aperture truncately 

 auriform, white within ; peristome thickened within, with external 

 margin unreflecled, arcuate, acute ; columellar margin dilated, 

 adnate ; parietal margin wanting. 



Length 0.S5 in. (21 3-5 mill.), breadth 0.48 in. (12 mill.). 



Length of body whorl 0.59 in. (15 mill.). 



Average weight 8.60 grains. 



Var. B. With oblique reddish brown streaks above, the base 

 green or j^ellow. 



Var. C. Yellowish or green throughout, excepting the bands. 



