36 ORCULA. 



8 whorls. It was labeled 0. doliolum var. critica by Dr. 

 Boettger, but probably is scarcely separable from enteroplax. 



12e. Orcula scyphus gracus n. subsp. PI. 3, figs. 2, 3, 4. 



The shell is cyliridric with short terminal cone, brown, the 

 upper third finely, sharply striate, lower whorls obsoletely so; 

 last whorl ascending in front, hardly compressed though some- 

 what tapering towards the base, paler brown behind the lip. 

 Peristome thin, reflected, but little thickened within. An 

 angular nodule on the rather thin parietal callus. Parietal 

 lamella high, tapering forward and emerging to the edge of 

 the parietal callus. "Within it is high and flaring. Two folds 

 emerge on the columella, either weakly, distinct only in an 

 oblique view, or distinctly in front view. They strengthen 

 within, the lower one being somewhat the stronger within the 

 back ; but the upper is continuous to the columella, not inter- 

 rupted as in batumensis. There is no trace of an internal 

 palatal fold. 



Length 6.7, diam. 2.4 mm. ; 9 whorls. 



Length 6.4, diam. 2.3 mm. ; 9 whorls. Type. 



Length 5.5, diam. 2.3 mm. ; 8y± whorls. 



Greece: Chalcis, Eubcea (Conemenos). 



This form differs from batumensis by lacking an internal 

 palatal fold, by the parietal lamella being high in front and 

 emergent, and by the smaller development of the eolumellar 

 lamella within the back of the last whorl, the two lamellae 

 being nearly equal there. The peristome also is less devel- 

 oped, with only quite moderate internal thickening, conse- 

 quently there is no such conspicuous white or buff tract be- 

 hind it as in the Asiatic form, and no crest there. 



13. Orcula moussoni (Reinh.). 



Reinhardt separated from orientalis the form of Aleppo, 

 received from Mousson, as Pupa moussoni, characterized as 

 follows: Shell cylindric or ovate-cylindric, terminating in a 

 short, obtuse cone ; solid ; pale corneous, flexuosely rimate. 

 Whorls 9y 2 to 10, the first five increasing in width rapidly, 

 but little in height, convex, costulate, separated by a deep 



