ACHATINELLA PAPYBACEA. 243 



or ecru streaks, like the livida group, the embryonic whorls 

 never have an ocher-yellow band below the suture, such as 

 occurs in most of the livida series. The embryo often has a 

 faintly gray or dusky tip. 



22. A. PAPYRACEA Gulick. PL 42, figs. 7, 8 ; pi. 54, figs. 8 to 

 10, 14, Ua. 



"Shell sinistral, imperf orate, ovate-conic, thin, polished, 

 finely striated, light gray or of leaden ash color, with obscure 

 brown spiral lines; apex subacute; spire convexly conical; 

 suture marginate, impressed; whorls 5%, moderately convex; 

 columellar fold central, usually white, slightly developed and 

 not strongly twisted; aperture oblique, sinuately oval, white 

 or gray within; peristome scarcely thickened, with external 

 margin unreflected, arcuate, acute; columellar margin nar- 

 row, adnate ; parietal margin wanting. Length 16%, breadth 

 9%, length of body- whorl 12 mm. Of a large specimen, 

 length 19, breadth 10%, length of body-whorl 13y 2 mm. 

 Average weight 2.5 grains. 



"Var. b, without the brown lines" (Gulick). 



Oahu: Kalaikoa, Ahonui and Wahiawa, on the hala, Pan- 

 danus odoratissimus, and other trees (J. T. Gulick). Waipio 

 to Kalaikoa. 



Achatinella papyracea GUL., Ann. Lye. N. H. of N. Y. vi, 

 p. 229, pi. 7, f . 48 ; December, 1856. 



Mr. Gulick 's type (pi. 54, fig. 8) was from Kalaikoa, where 

 many of the shells have the spiral lines and bands more nu- 

 merous and distinct than in those from Wahiawa. The 

 ground-tint is white with light brownish vinaceous streaks 

 (very faint or almost wanting in some shells, deeper in others, 

 more of a light vinaceous purple). The bands vary in 

 tint, from walnut to snuff-brown or brownish vinaceous. They 

 are irregular in width, shade and distribution, but there is 

 usually a peripheral light zone, and the subsutural band is 

 not emphatic, though usually present. The embryonic whorls 

 are white or buff, but so far as I know they are never bi- 

 colored, ochraceous and white, as in the livida series. Colu- 

 mellar fold usually weak, white. The lip is thin and simple. 



