44 OHgifial Descriptions of Achahnella. 



flistilicte albo marginata ; anfract. 6 1-2, primi 4 convex! usculi, ca?teri con- 

 vex!; apertura alba; perist. tenue, intus d!lute fusco t!nctum; pHca col- 

 umellaris valida, fnsco-rosea. Long. 24, cHani. 12 1-2 mill. 

 Var. Testa onin!no flava, snturam !nfra 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. vShell entirely yellow, encircled by a white band below 

 the suture. 



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

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

 yellow epidermis, which is entireh- wanting in that species, and to 

 A./idgens 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 . fulgms. It has been described b}- 

 Newcomb and Pfeiffer as a variety of the latter species. 



Hab. Palolo and Wailupe. — Sm. 



DIVERSA GROUP. 

 53. Achatinella diversa Gulick. 



A. dive) sa Gk. Ann. Lye. Xevv York, vol. vi, p. 220, pi. vii, fig^. 42a and 42*. 



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, moderateh' impressed; whorls 6 1-2, somewhat convex; 

 columellar fold central, strong, rose 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/*. 



