294 HAWAIIAN NESOPUPAE. 



spaced parietal and angular lamellae, the angular being usually 

 slightly longer and stronger than in centralis, and also by the 

 wider spaced and more nearly parallel palatal plicae. 



A single specimen in the Ancey collection from Olaa is 

 almost identical with Humuula specimens. 



Near the edge of the crater of Kilauea specimens are very 

 abundant on the low growing kukaineenee (Coprosma). They 

 are smaller than the typical form, globosely ovate, and have 

 but 414 whorls. One of these specimens measures: Length 

 1.53, diam. 1.04, apart. 0.67 mm. The above measurements are 

 of an average specimen. A number of slightly smaller speci- 

 mens occur in most of the lots collected near Kilauea. At first 

 glance they have the appearance of immature shells and are 

 almost globular in outline. The peristome, however, is thick- 

 ened. In these specimens the angular lamella is very short. 

 One of them with 4% whorls measures : length 1.25, diam. 1.05, 

 apert. 0.61 mm. 



In some specimens from the margin of Kilauea iki (fig. 3), 

 the angular and parietal lamellae are quite close together, and 

 the palatal folds are less widely spaced than in typical 

 anceyanoi. 



Length 1.7, diam. 1.1 mm., aperture 0.66 mm. 



Length 1.5, diam. 1.1 mm. 



9. NESOPUPA SUBCENTRALIS C. & P., n. sp. PL 28, fig. 8. 



The shell is minute, sub-perforate (perforation very minute)', 

 nearly cylindrical, in its fossil state pale brownish white, often 

 with a broad lighter peripheral zone, rather thin, hardly 

 translucent, under a strong lens closely, quite evenly but 

 weakly obliquely striate. Spire with convex outlines. The 

 summit convexly conic, apex obtuse ; individual whorls slightly 

 convex and separated by a rather shallow suture. Whorls 5, 

 the embryonic smooth for iy 2 whorls, the faint striae beginning 

 rather abruptly at this point ; last whorl subcylindric, taper- 

 ing towards the base, somewhat flattened over the palatal plicae, 

 very slightly swollen back of outer margin of peristome. 

 Aperture broadly truncate-ovate, hardly oblique, perpendicu- 

 lar, lip-insertions remote. Angular lamella short, low, tooth- 



