44 OHginai Descriptions of Achatinella . 



clistincte albo marginata ; anfract. 6 1-2, primi 4 convexiusculi, cteteri con- 

 vex! ; apertura alba; perist. tenue, intus dilute fusco tinctnm; plica col- 

 umellaris valida, fusco-rosea. Long. 24, diam. 12 1-2 mill. 

 Var. Testa omnino flava, suturam infra zona alba cincta. 



Shell sinistral, ovate-conical, shining, transversely and finely 

 striated with lines of growth, green, striped with dark green, and 

 encircled with green and faint red spiral lines, ornamented by a 

 yellow band below the white suture ; suture distinctly margined 

 with white ; whorls 61-2, first 4 slightly convex, the others con- 

 vex ; aperture white ; lip thin, tinged with light brown within ; 

 columellar fold strong, rose-brown. 



Var. Shell entirely yellow, encircled by a white band below 

 the suture. 



Affinities. This species is, on the one hand, closely related 

 to A. plianata Gk., from which it is distinguished by its green and 

 yellow epidermis, which is entirely wanting in that species, and to 

 A.fulgens Newc, from which it differs in being without the broad 

 black bands, which belong not only to the epidermis, but to the 

 solid part of the shell of A. fjilgens. It has been described by 

 Newcomb and Pfeiffer as a variety of the latter species. 



Hab. Palolo and Wailupe. — Sm. 



DIVERSA GROUP. 

 53. Achatinella diversa Gulick. 



A. diversa Gk. Ann. Lye. New York, vol. vi, p. 220, pi. vii, fig. 42(7 and \2b. 



Shell sinistral, very rarely dextral, imperforate, ovately or 

 elongately conic, solid, shining, striated, white or variously painted 

 with yellow or green ; apex subacute ; spire conic ; suture mar- 

 ginate, moderately impressed ; whorls 6 1-2, somewhat convex; 

 columellar fold central, strong, ro.se or white ; aperture oblique, 

 truncately auriform; peristome acute, thickened within; with 

 columellar margin dilated, adnate ; parietal margin wanting. 



Length 0.83 in. (21 mill.), breadth 0.45 in. (11 2-5 mill.). 



Length of body whorl 0.61 in. (15 1-2 mill.). 



Length of aperture 0.42 in. (10 2-3 mill.) ; an average 

 specimen. 



Greatest length 0.99 in. (25 mill.). 



Average weight 8.00 grains. 



Var. A. Pure white, except the columella, which is fre- 

 quently lilac or rose. PI. vii, fig. 42a. 



Var. B. White, with one black band. PI. vii, fig. 42*^. 



