ACHATINELLA LIVIDA. 251 



contiguous chestnut bands and a narrower subsutural band 

 of the same color. The ground color is olive lake in the type, 

 but varies in tint. It is nearly wax yellow in the chestnut- 

 banded shell. The lip is often well thickened within and 

 shows dark spots at the ends of the bands. The embryonic 

 shell when unworn shows the characteristic yellow zone of 

 livida below the suture, the rest of the whorl being white. 

 This zone changes to brown on the following neanic whorls, 

 but as stated above, fades to yellowish or disappears on the 

 last whorl. 



24c. A. LIVIDA HERBACEA Gulick. PL 44, figs. 1, 2, 3, 4. 



* Shell sinistral, sometimes dextral, imperf orate, ovate conic, 

 solid, shining, striated, of a dull green color; apex rather 

 obtuse, white ; spire conic, suture marginate, moderately im- 

 pressed; whorls 6, convex; columellar fold central, white, 

 strong ; aperture truncately auriform, white within ; peristome 

 slightly thickened within with external margin unreflected, 

 arcuate, acute ; columellar margin dilated, adnate ; parietal 

 margin very thin. Length 18, breadth 10%, length of body- 

 whorl 13 mm. Average weight 4.4 grains. 



"Var. 6. With a black sutural band; columellar fold usu- 

 ally white, sometimes lilac. 



"Var. c. Yellow, with smoother surface, approaching A. 

 recta Newc. 



''About a fifth of my specimens are dextral' (Gulick). 



Oahu : forests between the streams of Waimea and Kawailoa, 

 on the leaves of the pua, ahakea and ohawai (Lobelia gri- 

 mesiana). J. T. Gulick. 



Achatinella herbacea GUL., Ann. Lye. N. H. of N. Y. vi, p. 

 233, pi. 8, f. 52, Feb., 1858; Evolution, Racial and Habitu- 

 dinal, p. 41, pi. 2, f. 4. 



A darker, greener shell than recta, also more strongly stri- 

 ate, and very rarely having any bands except the sutural, 

 which is occasionally present. Mr. Gulick 's type, pi. 44, fig. 

 1, is indistinctly streaked with citrine to olive-green on a 

 yellower, pyrite yellow, ground, the narrow, well-defined su- 

 tural margin somewhat tinted with chestnut; three apical 



