222 PROCEEDINGS OF THE ACADEMY OF [1895. 



whorls. The animals are also different, and the habitats widely 

 separated. 



We take pleasure in dedicating this beautiful shell to His Ex- 

 cellency S. B. Dole, First President of the Republic of Hawaii, a 

 gentleman noted for attainments in natural as well as political science. 



Achatinella nivea, n. sp. PI. X, fig. 19. 



Shell sinistral, subperforate, somewhat solid, acuminately ovate 

 conic, apex acute ; surface highly polished, obliquely striated with 

 fine lines of growth, and under a lens showing very close and 

 delicate decussating spiral stme ; nuclear whorls faintly decussated. 

 Color white, encircled with a narrow, pale chestnut band on or a 

 little below the periphery. Whorls 7, slightly marginate above, 

 flatly convex, the last with a somewhat angular periphery and 

 flattened base. Suture slightly impressed. 



Aperture oblique, roundly oval, white, the chestnut band of the 

 exterior visible within. Peristome white, acute, thickened within, 

 expanded, basal and columellar margins narrowly reflexed, extrem- 

 ities joined by a very thin white callus. Columella white, ter- 

 minating in a moderately developed, flexuous plait. 



Length, 24 ; diam. 14 mm. 



Habitat, Makawao to Huelo, Island of Maui. 



Animal when extended in motion longer than the shell. Mantle 

 densely black with minute brown flecks and a broad } T ellowish band 

 encircling the outer edge. Tentacles and superior portion of foot 

 brown with a slight slate tinge; under portion of foot light brown. 

 Front above covered with light granulations. 



I have before me over 500 examples of this species, which are 

 without variety in color or shape. The peripheral chestnut band 

 is a constant feature. It may be readily distinguished from 

 Achatinella Tappaniana Adams, by its more slender form and 

 convex spire, by the sub-angulated periphery, flattened base, and 

 more polished surface. The color of the animals is also very dif- 

 ferent ; and the habitats are separated by a twenty-five mile ex- 

 panse of low dry land, which is destitute of forests and molluscan 

 life. In character of shell and animal it has some affinity with * 

 the preceding species ; and, considering the remote habitats, the 

 two may be regarded as distinct, but allied species. 



Achatinella mucida, n. sp. PI. X, fig. 23. 



Shell sinistral, very minutely perforated, solid, acuminately ovate 



