130 ELASMIAS. 



Tornatellina qiiadrasi MLLDFF., Nachriehtsblatt d. Deut- 

 schen Malak. Gesellschaft, vol. 26, Feb., 1894, p. 16. 



14. E. KITAIWOJIMANUM (Pilsbry & Hirase). PL 31, figs. 9, 

 11. 



The shell is imperforate, globosely-ovate, thin, corneous, 

 somewhat translucent. Surface shining, the first whorl very 

 minutely roughened, second whorl microscopically and very 

 closely striate spirally, the last whorl marked with minute 

 growth-lines and very fine, rather widely-spaced impressed 

 spiral lines. Spire short, obtuse. Whorls almost 4, strongly 

 convex. The aperture is ample, oblique; outer lip fragile; 

 parietal lamella extremely low and about a half-whorl long, 

 columella abruptly truncate at the termination of the steeply, 

 spirally-ascending columellar lamella, and above it bearing a 

 low, more steeply ascending lamella. 



Length 3.2, diam. 2.3 mm. 



Japan: Kita-Iwo-jima, Sulphur group, and Hachijo, Izu- 

 shichito group, Izu. Type no. 84965 A. N. S. P. (Hirase). 



Tornatellina kitaiwojimana PILS. & HIR., Nautilus, xvii, 

 Sept. 4, 1903, p. 53. 



The columellar plate is narrow but distinctly biplicate ; the 

 parietal lamella low but long. Kita-Iwo-jima is one of the 

 Sulphur or Volcano Islands, a little group lying south of the 

 Ogasawara (Bonin) Islands, and in line with the Izushichito 

 group, or so-called ''Seven Islands of Izu." They were dis- 

 covered by Bernard de Torres in 1543, and are governed by 

 Japan from the Ogasawara Islands. Volcanic forces are still 

 active in this group, which is regarded as a continuation of 

 the Fuji chain, in which the species occurs also on Hachi- 

 jojima. 



This species has more convex, shorter whorls and a deeper 

 suture than E. apertum and E. cernicum, and the parietal 

 lamella is lower. 



