122 ACHATINELLA, SECTION BULJMELLA. 



6 1 . Shell ovate, smooth. 



c. Larger, capacious species, diam. 10 mm. or more. 

 d. Shell sinistra.l, highly polished, usually white 

 or with rose bands, lip bright rose ; rarely 

 greenish or dark, with dark brown lip. 



A. rosea, no. 8. 



d 1 . Dextral or sinistral, variously banded with 

 chestnut or suffused, lip pale or brown. 



A. bulimoides, no. 9. 



d 2 . Dextral or sinistral, conspicuously streaked 

 with brownish, sometimes with white bands 

 also, lip brown. A. elegans, no. 10. 



d 3 . Chiefly sinistral, blue-gray or purplish, some- 

 times banded. A. e. wheatleyana, no. 10&. 

 c 1 . Smaller species, usually less than 10 mm. diam. 

 d. Shell sinistral. 



e. Wax-yellow with a brown sutural band, 



sometimes one or two other bands, colu- 



mella pink. A. sowerbyana, no. 13. 



e 1 . Wax-yellow below, white above periphery, 



with a subperipheral brown band; colu- 



mella pink. A. s. thurstoni, no. 13a. 



e 2 . "White, usually with broad chestnut bands; 



columellar fold white or brownish. 



A. s. laiensis, no. 13&. 

 d 1 . Shell dextral. 



e. Wax-yellow with white sutural band, colu- 



mella pink. A. s. roseoplica, no. 13d. 



e 1 . Ground white or pale, uniform, or banded 



or streaked with chestnut. 

 A. pupukanioe, no. 12. A. s. dextroversa, no. 13c. 



SERIES OP A. VIRIDANS. 



(Species of the east end of the Main Range.) 



These forms, which are invariably dextral, inhabit the val- 

 leys from Nuuanu to the southeastern end of the range. Be- 

 tween Xuuanu and Waimanalu there are a.bout half a dozen 

 great ridges and valleys where no BuUmella is known except 

 A. fuscoltasis irilderi on some high points of the main axis. 



