TORN ATELL ARIA. 269 



13a. T. abbreviata hawaiiensis n. var. PL 55, fig. 14. 



Specimens of this species from Hawaii have a slightly lower 

 parietal lamella and weaker columellar folds than those from 

 Maui, but both columellar lamellae emerge. They are also 

 somewhat more slender. Length 4.3, diam. 2.5, axis of apert. 

 1.85 mm. Height of parietal lamella 0.25 mm. ; 7 whorls. 



Hawaii: Kukuihaele (type loc.), Okala and Waimea 

 (Thaanum) ; Waimea fossil (Henshaw). Type 34026 Bishop 

 Mus. Cotypes 15236 Bishop Museum, 111851 A. N. S. P., 

 and in Mr. Thaanum 's collection. 



The fossil material is considerably larger than the living. 

 A specimen with 71/2 whorls measures, length 5.4, diam. 3.25, 

 axis of apert. 2.3 mm. 



In fresh immature specimens the lower columellar fold is 

 stronger than the upper. There are about 12 rather separ- 

 ated fine distinct spiral striae on the embryonic whorls. 



14. T. SMITHI C. & P., n. sp. PL 55, fig. 11. 



The shell is perforate, broadly conic, light corneous, vitreous, 

 shining, nearly smooth, very minutely striate with lines of 

 growth. Spire conic, apex subacute. Suture simple, lightly 

 impressed. Whorls 6%, moderately convex, slowly increas- 

 ing, compressed, the last somewhat ventricose with convex 

 tapering base. Aperture not small, ovate. Parietal lamella 

 low, oblique. Columella nearly straight, slightly tumid, fur- 

 nished with two almost equal folds, which extend to the margin 

 of the columella. Peristome simple, thin, acute, arcuate. 

 Length 3.8, diam. 2.3, axis of apert. 1.8 mm. Height of par. 

 lamella 0.15 mm. 



Hawaii: Olaa, Kaiwiki and Hilo (Thaanum); Kaalapuu- 

 wale, in the district of Kona (Forbes). Type Bishop Mus. 

 14195. Cotypes Bishop Mus. 14015 and 14051, 111857 A. N. 

 S. P., and in Mr. Thaanum ? s collection. 



In most specimens the front portion of the parietal lamella 

 is broken or eroded. The umbilicus is from 1/9 to 1/13 of the 

 diameter of the shell. In immature specimens there are about 

 20 low close spiral threads on the embryonic whorls. This 



