18 PRONESOPUPA. 



12. PRONESOPUPA LYMANIANA C. & P., n. sp. PL 1, fig. 2. 



The shell is similar to that of P. sericata, but shorter, 

 broader in proportion to its length, more pupiform and with 

 more convex outlines. The individual whorls are less convex 

 and consequently the suture is not as deep. Whorls 5, the 

 embryonic slightly smoother and less granulose than those of 

 P. sericata, the rest of the whorls evenly and closely costulate, 

 the interstices very minutely granulose, spiral striation 

 hardly showing under the microscope. The last whorl ascends 

 slightly near the aperture. The aperture is nearly vertical, 

 truncate-ovate. The outer margin of the peristome is very 

 slightly thickened, not expanded. The inner face of the 

 columella is straight. Length 2.08, diam. 1.22, aperture 

 (diag.) 0.8 mm. 



Hawaii: 28% miles Olaa road (Lyman). Type 12516 

 Bishop Museum ; paratypes in Bishop Museum and A. N. S. P, 



A very rare species of which there are only four specimens 

 in the Bishop Museum, from the original series collected by 

 Mr. E. Lyman. 



It is distinguished from P. sericata by its smaller size, more 

 convex outlines and less convex individual whorls; and from 

 P. frondicola it is most easily recognized by its broader 

 pupoidal form and less convex whorls. 



13. PRONESOPUPA ORYCTA C. & P., n. sp. PL 1, fig. 10. 



The shell characters are somewhat similar to those of both 

 sericata and fymaniana. The shell is narrow, subcylindrical, 

 with an extended spire and with the apex relatively acute. 

 Whorls 51/2, the embryonic slightly more projecting than in 

 the other species, very minutely granulose, the rest closely 

 coiled, slightly convex, the last rather large, ascending slightly 

 near the aperture, tapering towards the base. The riblets of 

 the last whorl are from 0.055 to 0.07 mm. apart. Aperture 

 small, toothless, truncate oval. Outer margin of peristome 

 minutely thickened, very slightly expanded ; columellar mar- 

 gin arched above the umbilicus, its inner face slightly con- 

 cave. Length 2.02, diam. 1.1, aperture (diag.) 0.73. Type 



