ACHATINELLA FUSCOBASIS. 173 



(6) White, with upper, peripheral and basal burnt sienna 

 or chestnut bands, the upper usually weaker or .sometimes 

 wanting. 



(c) A unique color-form in Mr. Spalding's collection (no. 

 2027) has the penultimate whorl deep chestnut, last whorl 

 with two narrow dark bands (ii and iii). The ordinary 

 brown-banded and white forms occurred in the same colony, 

 which is about half a mile from the top of Konahuanui, in 

 the main and typical locality. 



The margin below the suture is invariably white, the sur- 

 face is very glossy, and spiral lines are scarcely visible even 

 on the early whorls; lip white, or rarely with a faint brown 

 tint. It differs from tccniolata by being sinistral, with the 

 outer border of the columellar lip decidedly less elevated. 



Length 19.3, diam. 11.4 mm. 



Length 18, diam. 12 mm. 



Length 17.7, diam. 10.2 mm. 



Dedicated to Prof. A. B. Lyons, formerly of Oahu College. 

 PL 35, figs. 5, 7 are cotypes, 65693-4 A. N. S. P. Fig. 6, from 

 the Irwin Spalding collection, taken half a mile from the top 

 of Konahuanui, somewhat approaches the following sub- 

 species. 



. A. FUSCOBASIS WILDER: Pilsbry, n. subsp. PL 41, figs. 



The shell is shaped as in A. /. lyo'nsiana. First two whorls 

 buff-gray; last whorl having a chestnut or blackish- chestnut 

 peripheral band and basal area, the latter split into bands in 

 some colonies. Above the peripheral band there is a white 

 band; below it a wider white or mars-yellow band. The rest 

 of the upper surface is mars^yellow, mars-orange or burnt- 

 sienna, usually excepting a sutural band or line of white. 

 Lip and aperture fleshy in various tints, the lip narrowly 

 thickened within. Columellar margin but slightly or not 

 raised ; parietal callus milky or transparent, very thin. 



Length 17, diam. 10 mm. 



Length 15.2, diam. 10 mm. 



Summit of Lanihuli, at head of the Nuuanu-Kalihi ridge 



