TORNATELLARIA. 267 



Molokai : Kilohana type locality (Cooke), Puunea (Pilsbry, 

 Cooke). Type no. 34028 Bishop Mus., cotypes no. 24510 

 Bishop museum and 111859 A. N. S. P. 



This variety is not quite as closely coiled as the typical form. 

 There are 7% whorls in the type of the variety which have 

 the same length as the type of the species. The umbilicus is 

 slightly larger than in the typical form, being about one- 

 ninth of the total diameter. 



12. T. CONVEXIOR P. & C., n. sp. PI. 55, fig. 8. 



The shell is perforate, light cinnamon colored, slightly 

 transparent, with a somewhat dull surface. Outlines of the 

 spire are distinctly convex, the individual whorls being 

 slightly convex, the last rounded peripherally and below. 

 Parietal lamella is broad, eroded or excised in front, and a 

 whorl long. Two columellar lamellae emerge ; they are about 

 equally prominent, but the upper one is more oblique. Length 

 4.4, diam. 2.4, aperture 1.5 mm. ; 8 whorls. 



Hawaii: Olaa, D. Thaanum; with T. sykesi. Type no. 

 112751 A. N. S. P. ; cotypes in Bishop Mus. 



T. henshawi, T. trochoides and T. cmcta have distinctly 

 less convex, nearly straight lateral outlines. T. sykesi is de- 

 cidedly wider, with the parietal lamella not so long. T. urn- 

 bilicata has a more slender spire and a shorter, wider parietal 

 lamella. While we hesitate to add another to this difficult 

 group, yet it does not seem possible to identify the shells 

 with any described species. 



13. T. ABBREVIATA (Ancey). PL 55, figs. 12, 13. 



Shell obese-ovate, thin, more or less pellucid, glossy or with 

 a somewhat silken sheen, light or brown-corneous, minutely 

 but deeply and openly perforate. Spire conic, the apex 

 minute, a little obtuse. Whorls 6^/2? regularly increasing, 

 somewhat flat or very little convex, suture lightly impressed ; 

 the last whorl obese, rather sack-like, rounded (only in the 

 young encircled by an angle). Aperture suboblique, irre- 

 gularly oval, angular above, armed with a strong white com- 

 pressed parietal lamella and two minute, oblique, spiral folds 



