ORCULA. 91 



direct view in the aperture. The strong palatal callus has 

 excessively developed, very long appendages, which extend as 

 far as over the umbilical slit in the throat. Alt. 5.5 mm., 

 diam. 2.3 mm. 



Neighborhood of the waterfall of Perichnik at Tolmein, 

 Isonzo Valley. 



Orcula gularis tolminensis A. J. Wagner, Ann. Zool. Mus. 

 Polonici Hist. Nat. I, 1922, p. 122, pi. 6, f. 38 a, h. 



The excessively long palatal folds in an otherwise weakly 

 developed apertural formation appear remarkable. 



Orcula kaznakovi (Rosen). PI. 19, figs. 1, 2. 



Shell with a curved umbilical crevice; ovate-cylindric ; 

 smoothish, sculptured with remote, obsolete lamellee ; yellowish, 

 subpellucid. Apex obtuse. Whorls 91/0, slowly increasing, 

 the upper 5 a little convex, the rest flat, the last whorl rather 

 rapidly ascending to the aperture, constricted. Aperture 

 truncate-oval, with a compressed, very high and deeply enter- 

 ing parietal lamella, columella within biplicate above. Peris- 

 tome somewhat dilated, with a white thickening, the margins 

 converging, joined by a lamelliform white callus. Length 8, 

 diam. 5% mm., aperture 2i/^ mm. high and wide (Rosen). 



Caucasus: Ardanuch, with Buliniimis fiorenskii. 



Pupa kaznakovi Rosen, Mittheilungen des Kankasischen 

 Museums VI, 1914, p. 190, pi. 2, figs. 11 a, h. 



It is distinguished from Pupa doliolum Brug, var, hatu- 

 mensis Ret., which stands nearest the species under considera- 

 tion, by the shape of the aperture, the conspicuously strong 

 spiral lamella, the columellar teeth, dimensions, shape of the 

 shell and the strong callus. I allow myself the pleasure of 

 giving it the name of the Director of the Caucasian Museum 

 (Rosen). 



Orcula tingitana Pallary. PI. 19, fig. 9. 



Vol. 27, p. 256. Pallary 's figures (Journ. de Conchyl., Vol. 

 65, 1920, p. 133, pi. 2, fig. 15) are copied. The original locality 

 was banks of the Oued Querrha (Lt. Brunot). Said to be 



