42 Oj'igmal Descriptions of Achatinella. 



Hab. Species, and varieties B-K, Niu ; var. L-Q. Wailupe; 

 vars. R-X, Waialae : (vars. R, S and V are sometimes found in 

 Palolo;) vars. Y-II. Palolo : vars. JJ-PP, Kailua.— Gk. 



49. Achatinella versipellis Gulick. 



A. vetsipellh Gk. Ann. Lye. New York. vol. \-i. p. 224. pi. vii. fig. 44a and 446. 



Shell dextral or sinistral, imperforate, acuminately oVjlong, 

 solid, .shining, striated, of lively ash-color, more or less streaked 

 and waved with brown, with several interrupted brown bands on 

 the upper parts of the whorls : apex somewhat obtuse ; spire con- 

 vexly conical : suture margined, moderately impressed : whorls 6, 

 convex ; columellar fold central, white, strong ; aperture trun- 

 cately auriform, white within, a little oblique, in sinistral speci- 

 mens very oblique : peristome thickened within ; with external 

 margin unreflec'ted, compressed, edged with brown ; columellar 

 margin dilated, adnate ; parietal margin wanting. 



Length 0.80 in. (20 1-3 mill.), breadth 0.40 in. (10 mill.). 



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



Average weight 8.60 grains. 



Station. Principally on the leaves of the Ki {Cordyline ter- 

 viijialis) and leie {Freycinetia scaiidens). 



\'ar. B. Rich brown, with light streaks and waves. 



\'ar. C. Yellow at the base, with one or more brown bands 

 above. 



\'ar. D, Yellow at the base, and white above, without bands. 



Yar. E. Nearly pure white. 



Yar. F. Ash or yellow gray, without bands. 



Remarks. A rare and beautiful species, found in the most 

 rugged but verdant regions of western Kailua. About a third of 

 the specimens are sinistral. 



Hab. Pohakunui. in Kailua. — Gk. 



Found on the other side of the island, but perhaps related to 

 the shells of \\\^ pdgens group. 



50. Achatinella pexa Gulick. 



A. pexa Gk. .\nn. Lvc. New York. vol. vi. p. 197, pi. vi. fig. 26. 



Shell sinistral, deeply perforated, ovate-conic, thin, shining, 

 finel}' striated, microscopically- very minutely decussated ; ash- 

 colored, streaked with white and brown, and banded with brown 

 spiral lines ; apex subacute ; spire conical: suture simple, slightly 

 impressed ; whorls 6, somewhat convex : columella white, obso- 



