ACHATINELLA VIRIDANS. 129 



be admitted that some of the yellow-ground specimens from 

 colonies presumably t&niolata X subvirens have a great re- 

 semblance to Pfeiffer's figure. The original description fol- 

 lows. ' A. macrostoma Pfr. Shell dextral, imperforate, 

 conic-ovate, rather solid, very lightly striated, glossy ; fulvous, 

 variegated with some pale and brown bands. Spire conic, 

 lather obtuse; suture submarginate; whorls 5%, moderately 

 convex, the last equal to the spire, swollen above, 'contracted 

 in the middle, rounded at base. Aperture slightly oblique, 

 ample, reversed auriform, white within; peristome white, 

 labiate within, the right margin expanded, strongly curved 

 above ; columellar margin dilated, adnate. Length 211/2, diam. 

 11 mm. ; 'aperture 12 mm. long, 5 wide inside. Inhabits the 

 Sandwich Islands, Frick; Mus. Cuming (Pfr.). 



Color-form snbvirens Newc. PI. 25, figs. 5 to lit, 9 to 95. 



" Shell 'conically ovate. Whorls 6, rounded and margined 

 above ; suture distinct and lined with white. Aperture ovate, 

 expanded below; lip thickened; coluniella short, flat and ob- 

 liquely truncated ; color of epidermis light green, interspersed 

 with a lighter shade 'arranged longitudinally; columella, lip 

 and aperture white. Length 15, diam. seven-twentieths of an 

 inch. Niu, Oahu. 



" Var. a. Pure white. 



" Var. 5. Brown or chestnut replacing the green color. 



" Through var. a- this species approaches a variety of A. 

 rutila, and through var. ~b, A. decipiens. It is readily dis- 

 tinguished from the first by its smaller size, greater solidity, 

 stronger striae and more elongate form ; from the latter by its 

 less acuminate form, white suture, less solidity, and their 

 widely separated localities ' (Newcomb). 



Newcomb's figure of the type from Niu is reproduced, pi. 

 29, fig. 18. The lip is white or yellowish, the green color is 

 paler than in viridans, surface less wrinkled, and typically 

 the sutural margin is white, though very often the dark lines 

 extend over it. It differs from viridans in the average, but 

 one could not pronounce on every specimen, and if Gulick's 

 lots are reliable, it occurs in the same colonies with rutila. 



