

AM ASTRA, OAHU. 223 



white within, with a dark border in the acute lip. An axial 

 crevice is present in some examples. Length 20, diam. 10.7 

 mm.; 6% whorls (Waianae). 



In a series from Lihue (pi. 34, figs. 6 to 10) there are some 

 shells having a reddish-brown, uniform or indistinctly banded 

 under-color, like those from Waianae; others have a cream, 

 pale brown-tinted or dirty-whitish ground with faint or dis- 

 tinct reddish bands; and all are covered with a rather thin 

 outer cuticular layer, which is brown or olivaceous on the 

 pale, blackish on dark individuals. The embryonic whorls 

 are generally dark, but sometimes pale. One specimen from 

 Waianae (Gulick coll.) is like the paler Lihue shells. These 

 light and banded specimens approach very close to A. cylvn- 

 drica, and there may be actual intergradation ; yet, in gen- 

 eral, A. intermedia is a more robust race, with straighter lat- 

 eral outlines and a decidedly more conspicuous outer layer of 

 cuticle. 



Up to a length of about 12 mm. the periphery is acutely 

 angular, and the umbilicus present as a narrow crevice. In 

 the adult stage it is imperforate. 



A shell probably from Waianae is figured, pi. 33, fig. 8, to 

 show the coloration when the outer coat of cuticle is re- 

 moved. The ground-color is cream-white, with many bright 

 chestnut lines and bands, beginning faintly on the penult, 

 whorl and becoming dark and wide on the base of the last 

 whorl. Much wider at all stages of growth than A. cylin- 

 drica. Length 19.2, dia.m. 11, aperture 9.3 mm. ; whorls G 1 /^. 

 A young shell in the same lot is 13 mm. long, of 5 whorls, and 

 has a width of 8.9 mm. It is wholly imperforate. 



Amastra conicospira Smith. PI. 27, fig. 18; pi. 38, fig. 14. 

 ' ' Shell ovate-conic, dextral, striated with growth-lines ; dirty- 

 whitish, partly covered with olivaceous epidermis. Whorls 7, 

 nearly flat, the first three or four light reddish, following two 

 purplish-brown. Spire straightly conic. Suture simple. 

 Aperture dirty-white. Peristome thin, brownish within, 

 scarcely thickened ; columellar fold thin. Length 20.5, diam. 

 10 mm. Sandwich Is." (Smith). 



"But one specimen of this species has been received, and 



