ToKXATKLLIDES OF HAWAIIAN ISLANDS. 



very small, suddenly enlarging at the last whorl) ; brown, 

 glossy. Outlines of the spire straight, the apex not very ob- 

 tuse. Whorls 6, moderately convex, the last one short, 

 rounded below. The aperture is short and rather broad. 

 Parietal lamella well developed, nearly a half- whorl long. 

 Colurnellar margin dilated. Columella vertical, bearing a very 

 weak upper lamella, which extends nearly to the edge of the 

 columellar lip. Length 2.6, diam. 1.4 mm. 



Molokai: Western ravine of Kamalo, near the old ditcli 

 trail (Cooke & Pilsbry). Type no. 112537 A. N. S. P., cotypes 

 in B. P. B. Mus. 



Related to T. perkinsi, but less lengthened, with the whorls 

 more convex. It is more conic than T. frit. 



:3l>. T. FRIT P. & C., n. sp. PI. 49, fig. 6. 



The shell is oblong- turrited, very narrowly umbilicate, 

 brownish. Apex obtuse. Whorls 6, convex, the penultimate 

 slightly prominent, last whorl short. Aperture short. Pari- 

 etal lamella moderate, about one-third of a whorl long. Colu- 

 mella dilated, bearing a very low upper lamella, which con- 

 tinues inconspicuously to the edge. Length 2.9, diam. 1.3 mm. 



Molokai: Western ravine of Kamalo (Pilsbry & Cooke). 

 Type no. 109949 A. N. S. P., cotype in B. P. B. Mus. 



This species is somewhat more slender than T. perkinsi, 

 with less straightly conic spire, decidedly more convex whorls 

 and slightly coarser striation. The umbilicus is a trifle 

 smaller than in T. perkinsi, and smaller than in T. comes. The 

 parietal lamella is broader than in either. 



33. T. PRODUCTUS (Ancey). PL 49, figs. 9, 10, 11. 



Shell narrowly umbilicate, elongate, conic, subtruncate at 

 the base, corneous, glossy, nearly smooth, microscopically 

 striate with growth-lines, quite thin, subdiaphauous. Spire 

 elongate-conic, apex somewhat acute. Suture simple, slightly 

 impressed. Whorls 8, hardly convex, very slowly and regu- 

 larly increasing, the last short, rotund, subtruncate and 

 saccate at the base. Aperture elongate-oval, somewhat ob- 

 liquely truuciiti- above. Parietal lamella minute. Columella 



