orcula. y 



Orcula dolium var. triplicata 'Brancsik' Clessin. PL 1, fig. 

 6. Shell broader and larger; columellar folds 3, a somewhat 

 smaller third one being interposed between the first and 

 second. Length 9, diam. 2y 2 to 3 mm. Upper Hungary at 

 Trencsin-Teplitz (Clessin, Molluskenfauna, 1887, p. 235, fig. 

 138). This is the mutation called quadriplicata by Locard 

 and Westerlund, occasionally occurring individually in some 

 colonies of dolium. 



"Westerlund defines the following in his Fauna, iii, 1887, p. 

 84. Form major: Length 9 to 10, diam. 3y 2 to 3% mm. 

 Hungary. Obesa: 8x4 mm. Hungary. Par Westerl. : both 

 columellar lamella? strong and produced forward to the mar- 

 gin equally strongly. No locality mentioned. Cebratica 

 "Westerl. : With two closely contiguous parietal lamella?, the 

 inner one smaller and less emerging. Cebrat Mt. (Jetschin). 



The following forms from the Tatra were defined by 

 Brancsik, Jahresheft Trencsiner Comitates, x, 1887, p. 81; as 

 I have not seen this publication, the descriptions are taken 

 from Kobelt's Iconographie, n. ser., vol. 8. 



Var. titan Branc. With considerably widened umbilical 

 perforation, more strongly striate, with conspicuously more 

 robust figure; with form obesa (pi. 1, fig. 4) higher and 

 broader, generally widest at base, length up to 11 mm., of 10 

 to 10Vo whorls. Also forms curta and cylindrica. 



Var. minima Branc. With noticeably reduced upper colu- 

 mellar fold, relatively strong peristome and strong callus, 

 distinct striation and deeper suture; with forms obesa, cylin 

 drica and curta. 



Pupa dolium var. cylindrica Fitzinger, Beitrage zur Landes- 

 kunde Oesterreich's, iii, 1833, p. 108, no description. 



la. Orcula dolium pfeifferi (Moq.). PI. 1, figs. 8, 9. 



The shell is similar to dolium except that there is a single 

 lamella on the columella. Within the last whorl the parietal 

 lamella is very low, though about a whorl long, and on the 

 axis only one columellar lamella; the supracolumellar being 

 wholly wanting or represented by an inconspicuous swelling. 



Length 6.8, diam. 3.3 mm. ; 8^ whorls. Grenoble, type loc. 



Length 7, diam. 3.2 mm. ; 8% whorls. Schwartzenberg am 

 Pilatus. 



Grenoble and Lyons, France; Switzerland. 



