ORCULA. 17 



sculptured, with stronger, more emerging columellar lamella, 

 and without a callus within the outer lip. It is less conic 

 than 0. conica, and differs by its epidermal riblets, but this 

 is the most closely related species. Figured from a specimen 

 from the Boettger collection. 



5. Orcula jetschini Kim. PI. 2, figs. 10, 11. 



Shell perforate, somewhat swollen-cylindric, yellowish- 

 brown, often with a reddish tint, dully shining, with more or 

 less separated cuticular riblets. Summit bluntly conic, nearly 

 hemispherical. The 9 convex whorls increase slowly but reg- 

 ularly in width, and are separated by a rather deep suture. 

 Aperture somewhat inclined to the axis, truncate-ovate, with 

 three folds: the largest on the parietal wall, two emerging to 

 the margin on the columella. Peristome somewhat expanded, 

 chiefly on the columellar margin, with a white thickening 

 within. Length 6y 2 to 7, diam. 3y 2 to 3% mm. (Kim.). 



Transylvania, restricted to the southwestern part: Vajda- 

 Hunyad and Bad Gyogy (Kiinakowicz), Judenberg near 

 Zalatna (Jickeli). Cerna valley at Mehadia in the Banat 

 (Jetschin). 



Orcula jetschini M. v. Kimakowicz, Verh. u. Mitth. Siebenb. 

 Ver. naturwiss. im Hermannstadt, xxxiii, 1883, p. 44; also 

 xxxix, 1889, p. 98. — Clessin, Molluskenfauna Oesterreichs, 

 etc., p. 237, f. 140. 



0. jetschini is related to 0. conica, both having the parietal 

 and columellar lamellae very broadly expanded within; but 

 jetschini has an irregularly-ribbed surface, while conica is 

 finely striate, like dolium. 0. schmidti has closer, finer epi- 

 dermal riblets, and the lamellae are less enlarged within, the 

 supracolumellar being nearly as large as the columellar. 



When young 0. jetschini is plastered with dirt both above 

 and below; on the early whorls this layer projects over the 

 suture. 



The specimens figured are from near Mehadia. 



6. Orcula doliolum (Brug.). PI. 2, figs. 1, 2, 4. 



The shell is imperforate, rimate, cylindric or widest in the 

 upper third, terminating above in a very short, eonvexly 





