Original Descriptions of Achatinella . 77 



III. Achatinella formosa Gulick. 



A.formosa Gk. Ann. Lye. New York, vol. vi, 185S, p. 235, pi. viii, fig. 55. 



Shell sinistral, imperforate, acumiuatel}' ovate, solid, shining, 

 striated, white, with two black bands, one entering the aperture, 

 sometimes with the upper part of the whorl of a pale slate color ; 

 apex somewhat acute ; spire convexl}- conic ; suture marginate, 

 well impressed; whorls 6 1-2, convex; columellar fold central, 

 white, strong ; aperture truncateh* auriform, white within ; peris- 

 tome thickened within ; with external margin unrefle(5ted, arcuate, 

 acute; with columellar margin dilated, adnate ; parietal margin 

 wanting. 



Length 0.80 in. (20 1-3 mill.), breadth 0.42 in. (10 2-3 mill.). 



Length of body whorl 0.55 in. (14 mill.). 



Average weight 6.00 grains. 



Var. B. With the two bands uniting in one broad black belt. 



Var. C. With numerous black spiral lines. 



Station. On the Ki {Cordyline tcrminalis) and other leaves. 



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

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

 other. A. g/aiica, delta, phceozona, and zonata are certainly not 

 very similar ; but this species seems to connect itself diredlly with 

 varieties of each of these species. — Gk. 



Hab. Waimea. — Gk. 



112. Achatinella csesia Gulick. 



A. ctrda Gk. Ann. Lye. New York, vol. vi, 1S5S, p. 234. pi. viii, fig. 53. 



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

 ated, so streaked with white and fawn as to have a grey appear- 

 ance ; apex somewhat acute ; spire convexly conic ; suture mar- 

 ginate, moderatel}' impressed ; whorls 6 1-2, convex ; columellar 

 fold central, white, moderately developed ; aperture sinuately 

 oval, white within ; peristome thickened within ; with external 

 margin unrefle(5led, arcuate, acute, edged with brown ; columellar 

 margin dilated, adnate ; parietal margin wanting. 



Length 0.72 in. (18 1-3 mill.), breadth 0.42 in. (10 2-3 mill.). 



Length of body whorl, 0.50 in. (13 mill.). 



Average weight 4.00 grains. 



Remarks. This with A . concidcns and A . formosa Nob. , which 

 are found in Waimea, correspond to A. Jindidata Newc, A. cmcr- 

 sonii Newc, A. glauca Nob. found in Kawailoa. — Gk. 



Hab. Waimea. — Gk, 



