Shell sinistral, acuminate, turrited, with strongly marked transversely oblique striæ and with longitudinal incremental striæ more or less developed. Color brown with undulations of white at the upper whorls. Whorls 5, flatly convex; suture moderately impressed, margined. Aperture oblong-ovate; columella slightly callous; outer lip thin, elliptical. Length 0,7 inch, diam. 0,2 inch. N. cumingi is imperforate. The embryonic shell of 3 whorls is spirally striate and flammulate as usual . The following whorls have nearly obsolete longitudinal folds crossed by crenulated spiral threads, usually coarsest in the peripheral region of the last whorl, finer on the base; the intervals minutely marked with spirally descending, wavy striæ . Very often a peripheral thread is stronger, forming a low carina on the front of the last whorl. The surface is lusterless, dull brown. Aperture nearly white with a brown border within the thin, acute lip. The columella is long, straight, heavily white-calloused, and continuous in direction with the parietal wall. Length 21, diam. 7.2 mm.; 6 whorls. From Newcomb. Length 20, diam. 7 mm.; 6 whorls. Length 19, diam. 6 mm.; 6 whorls. Wailuku. Wailuku. The types were from East Maui, but I see no difference between those before me from Makawao and the West-Mauian shells (Wailuku)