io8 Original Descriptioyis of Achatinella. 



spire conical; suture marginate, well impressed; whorls 6 1-2, 

 very convex ; columellar fold central, white, strong ; aperture 

 slightly oblique, sinuately oval, bluish white within ; peristome 

 brown, thickened within : with dextral margin arcuate, scarceh' 

 reflected ; columellar margin dilated, white, sometimes slightly 

 detached ; parietal margin wanting. 



L,ength 0.90 in. (23 mill.), breadth 0.50 in. (13 mill.). 



Length of body whorl 0.64 in, (16 1-2 mill.). 



Average weight 6.00 grains ; least weight 4.30 grains. 



Var. B. Globose conic, spire shortened, with concave out- 

 lines, body whorl inflated. 



Var. C. Without the white band on the body whorl. 



Station. On the trunks of the Aiea and Kukui {Alciiritcs 

 triloba ) . — E . Bailey . 



Remarks. A. adamsii Newc. differs from this in shape, and 

 is covered with a brown unpolished coat more or less broken up 

 with clouds and waves of white ; moreover, I believe, that A. 

 adamsii is admitted to be a synonym of A. viarmorata Gould. — Gk. 



Hab. Kula.— E. Bailey. 



174. Achatinella grisea Newcomb. 



A. gi-jsea Newc. P. Zool. Soc. London, 1853, p. 153, pi. xxiv, fig. 55. 



vShell sinistral, inflated below, pointed at the summit ; whorls 

 6, rounded, not margined ; aperture ovate; columella short, flat 

 and but slightly twisted ; lip expanded, thickened within ; suture 

 well impressed ; umbilicus opened ; colour above greyish white 

 mottled with light brown, below ashy grey ; the body whorl en- 

 circled by a narrow white band. Long. 16/20, lat. 9/20 poll. 



Hab. Makawao. — Newc. 



This seems unrelated to any of the other .shells. It comes 

 very near to A. physa Newc, a shell from the island of Hawaii. 



175. Achatinella eburnea Gulick. 



A. eburnea Gk. Ann. Lye. Xeiv York, vi, 1855, p. 199, pi. vi, fig. 28. 



vShell sinistral, usually perforate, ovate-conic, somewhat solid, 

 shining, striated, very minutely decussated, iv^ory white ; apex 

 rather acute ; spire concavely conical ; suture slightly margined, 

 lightly impressed ; whorls 6, slightly convex ; the last large, eb- 

 liquely produced, and angulated above the aperture ; columellar 

 fold central, white, .strong, nearly transverse ; aperture ojjlique, 

 truucately auriform, white within ; peristome thickened ; with 



