164 ACHATINELLA BULIMOIDES. 



Achatinella rotunda GULICK, Ann. Lye. N. H. of N. Y., vi r 

 p. 248, pi. 8, L 67, Feb., 1858. 



As it occurs 011 the Kaaawa valley side (figs. 3, 4), this form 

 is so distinct that it might well be given specific rank. Some 

 Kahana lots however, figs. 5, 5a, 6, show every pattern linking 

 rotunda with ovata. Gulick remarks that ' ' there is a variety 

 with two black bands -which resembles certain forms of A. 

 ovata Newc., but is distinguished by its black suture, and its 

 thinner and more regularly arcuate lip. Its bands are also 

 deep black, while those of A. ovata are brown as in A. buli- 

 moides Swains.' Having before me several large lots from 

 Kahana labeled rotunda by Gulick, I find that the subsutural 

 dark border is as often absent as present, and the bands vary 

 in shade, often being quite as light as in ovata. Most of this 

 Kahana lot are more lengthened shells than the Kaaawa ro- 

 tunda, but some, such as fig. 6, are typical in shape. These 

 colonies are clearly ovata X rotunda hybrids. 



A typical rotunda from the type locality, Kaaawa, is shown 

 in pi. 28, fig. 3, Gulick coll. 



9/. A. BULIMOIDES GLABRA Newcomb. PL 29, fig. 25 ; PI. 33, 

 figs. 8 to 11. 



" Shell -conically ovate, glossy, whorls 6, somewhat inflated, 

 margined above ; suture well marked. Aperture ovate ; lip 

 slightly subreflected, dark-brown edged with black, thickened 

 within. Columella short, robust, expanded, 'and terminating 

 in a twisted plait. Color bluish-slate, much lighter on the 

 upper portion of the whorls; sometimes transversely banded 

 with white or -chestnut. Length nine-twentieths, width seven- 

 teen-twentieths of an inch : ' (Newc.). 



Oahu : Kolaupoko (Newc.); Kawailoa and Waialee (Gu- 

 lick) ; Waimea (Spalding). 



Achatinella gldbra NEWC., P. Z. S., 1853, p. 139, pi. 22, f. 

 25 ; P. Z. S., 1854, p. 310. PFB., Monogr., iv, 520. THWING, 

 Orig. Descript., p. 93, pi. 2, f . 2. B [ulimella] glabia, Newc., 

 HARTMANN, Proc. A. N. S. Phila., 1888, p. 29 ("Kawaiawa"). 



Newcomb 's type figure (pi. 29, fig. 25) shows a shell with 

 banded spire and light colored base. He subsequently (1854) 

 stated that A. glabra is always dextral. 



