84 TRUNCATELLINA OF JAPAN. 



deep suture, the last whorl a little compressed, rounded at 

 base. Aperture semi-oval, the margins* approximating, joined 

 by a very thin callus ; right margin obsoletely impressed in 

 the middle, a little thickened; columellar margin expanded, 

 reflected ; palate with one tooth ; columella a little convexly 

 calloused. Length 2, diam. 0.75 mm. (Kuester). 



Triest (Kuester). 



Pupa uniarmata KUESTER, Ueber das Bestehen und Wirken 

 Naturf. Ges. Bamberg, 3ter Bericht, 1856, p. 77 (Triest) ; 

 Neunter Bericht naturf. Ges. Bamberg, 1870, p. 99. WESTER- 

 LUND, Fauna, iii, 1887, p. 128. 



Differs from minutissima [cylindrica] by the size, cylindric 

 form, one whorl more, the palatal tooth ; from ascaniensis 

 Schmidt [costulata] by size, longer columella, etc. It is fully 

 as high as P. striata Gredler [T. monodo-n Held], but much 

 slimmer, sharply ribbed, quite cylindric, with strongly convex 

 whorls (Kuester). Not seen by the author. It has not been 

 figured. 



III. JAPANESE (Loocnoo) SPECIES. 



17. TRUNCATELLINA INSULIVAGA (Pils. & Hir.). PL 9, figs. 

 26, 27. 



The shell is minute, shortly rimate but imperforate, cylin- 

 dric, the summit rounded, obtuse, between chamois and pink- 

 ish-buff, thin, somewhat translucent. Surface rather glossy, 

 smooth except for weak growth-strias in places. The whorls 

 are strongly convex, the last tapering downwards somewhat, 

 its latter half being a little flattened laterally. The deep 

 suture ascends a little to the aperture. The aperture is 

 shortly pear-shaped, slightly oblique, the peristome very little 

 expanded except at the columellar margin, the outer lip 

 straightened or slightly bent in. The columella has an obtuse, 

 oblong tooth, rather deeply placed, but partially visible in a 

 front view in the type lot (seen only in oblique view in the 

 mouth in specimens from Kunchan). Very deep within, past 

 the median line of the back, there is a short palatal tubercle, 

 not visible in the aperture. 



Length 1.70, diam. 0.75 mm. ; 6V-> whorls. Type. 



