Original Descriptions of Achatinella. loi 



Hab. Kawela. — Pease. 



In appearance, very similar to A. splcndida Newc, found on 

 Maui. It is nearly related to A. dicightii Newc. 



158. Achatinella mucida Baldwin. 



A. mucida Bald. P. Ac. Philad., 1S95, p. 222, pi. x, fig. 23. 



Shell sinistral, very minutely perforated, solid, acuniinately 

 ovate, conic, apex rather acute ; surface shining, marked with 

 fine growth lines, and under a lens decussated by very delicate, 

 close, spiral striae. The shell of an ash}- color, irregularl}- dis- 

 tributed over the surface, giving it a niucid appearance ; with a 

 dark brown band at the peripher}' which becomes sutural, extend- 

 ing both above and below the suture, and a small patch of the 

 same colour around the umbilicus ; also with a few inconspicuous 

 brown lines on the base and above the periphery, the latter con- 

 tinued above ; apical whorls generally denuded of cuticle, and 

 then of a light chestnut color. Whorls 7, slightl}' convex ; suture 

 moderately impressed. Aperture oblique, oval, livid white within; 

 peristome acute, slightly thickened within, expanded, basal and 

 columellar margins narrowly reflexed, light brown on both face 

 and the reverse ; columella tinged with brown, terminating in a 

 strong, plaited, projecfling tooth. Length 21 1/2, diam. 11 1/2 mm. 



This species is found in the region intervening between the 

 habitats of A. redfieldii Newc. and A. compta Pse.; and it has 

 characteristics connecting it with each of these species. It is 

 smaller than either, and differs from both in the coloration, par- 

 ticularly from the former in the absence of the white sutural band. 

 —Bald.' 



Hab. Makakupaia. — Bald. 



VIRGULATA GROUP. 

 159. Achatinella virgulata Mighels. 



J'atliila virgulala Mijjh. I'roc. Ho.slon Soc. Xat. Hist., vol. ii, 1845, p. 20. 



Shell ovate-conic, light fawn color, beautifully adorned with 

 dark brown bands, more or less numerous, imperforate ; whorls 

 five, convex ; incremental strice delicate ; aperture oblong ; lip re- 

 fle(5led, slightly inflecfled. Length i in., diam. 3-5 in. 



Animal of a uniform bluish white, including the tentacles and 

 mantle ; tentacular sheath marked with a light ])rownish line. — 

 Newc. 



Hab. Kaluaaha to Halawa. — Bald. 



