208 TORNATELLIDES OF HAWAIIAN ISLANDS. 



Molokai : northwestern ravine of Kamalo, above the old 

 Kamalo ditch trail (Pilsbry & Cooke). Types no. 108700 A. 

 N. S. P., cotypes in B. P. Bishop Mus. 



It is smaller, and especially narrower, than T. procerulus, 

 with the parietal lamella better developed. 



13. T. KILAUEA P. & C., n. sp. PL 45, figs. 12, 13. 



The shell is rather narrowly umbilicate, ovate-conic, obese, 

 light-brown, glossy. Spire straightly conic with obtuse sum- 

 mit. Whorls 5ys, moderately convex, the last rotund below. 

 The aperture is irregularly ovate; parietal lamella very low, 

 thread-like, about one-third whorl long. Columellar margin 

 broadly dilated, simple. Length 3.3, diam. 2.1, aperture 1.4 

 mm. 



A young specimen of 4i/^ whorls has a simple columella, 

 like the adult. Earlier stages not seen. 



Hawaii : crest of Kilauea crater, about half a mile south of 

 the Volcano House (Dr. B. Sharp). Types no. 112737 A. N. 

 S. P. 



This species belongs to the procerulus group. It was found 

 in company with the Kilauea form of T. procerulus, but dif- 

 fers from that by its far more obese figure. It is much larger 

 than T. oncospira, T. compactus or T. confusus. 



14. T. KAHUKUENSIS P. & C., n. sp. PL 46, figs. 11, 12. 



The shell is oblong- turri ted, umbilicate (the axial perfora- 

 tion minute, but at the last whorl enlarging to three times its 

 previous size), cinnamon-brown. Outlines of the spire barely 

 convex, apex obtuse. Whorls 6, moderately convex, the last 

 sack-like below. Aperture truncate-ovate. Parietal lamella 

 very low and slender, nearly a half-whorl long. Columellar 

 margin dilated and simple. Length 3, diam. 1.5 mm. 



Oahu: ledges near base of the " coral bluff", iy 2 miles west 

 of Kahuku (Cooke & Pilsbry). 



Decidedly more slender than T. procerula, which occurs 

 with it. The umbilicus is larger than in T. kahoolavensis, 

 which appears to be its nearest ally. 



This Kahuku deposit, at least the superficial shell debris, 



