ABIDA. 273 



Pupa ringicula Michaud (as a form of polyodon), CAZIOT, 

 Bull. Soc. Zool. France, xxxv, 1910, p. 97 (distribution). 

 Helix (Cochlodonta) polyodon var. a: "exilis, elongata," 

 FER., Tableau Syst., 1821, p. 60, no. 490 (Gironne, Barce- 

 lonne) = Torquilla gracillima BECK, Index Moll., 1837, p. 86, 

 no. 17. = Pupa polyodon var. exilis Moquin-Tandon, based 

 upon same reference to Ferussac. Pupa p. var. minor Moq., 

 1855, based upon Rossm., f. 727. 



According to M. Margier, the Pupa ringicula is character- 

 istic of the valleys of the departments Aude and Pyrenees- 

 Orientales. It has been found at Carcassonne and Candies, 

 Villafranche-de-Confluent, Amelie-les-Bains ; but in the upper 

 part of the valley of the Tech it is replaced by Pupa mont- 

 serratica, at La Preste, Prats-de-Mollo, Arles-sur-Tech. The 

 two forms do not occur together. In Spain it is abundant in 

 the provinces composing Aragon, in Catalonia, and has been 

 found as far southwest as the province of Murcia. 



The separation of this variety from polyodon seems arbi- 

 trary, as the sizes iutergrade. Draparnaud's type of poly- 

 odon from near Montpellier was 8.5 mm. long. Specimens, 

 presumably of the var. ringicula, from dep. Hautes-Pyrenees 

 measure 6.4 mm. long, others from Barcelona (fig. 4) up to 

 9.7 x 3.2 mm. 



Torquilla gracillima Beck defined by the two words exilis, 

 elongata, may have been a slender shell of this race. 



Series of A. braunii. 



Rather small, closely striate, with 4 palatal plicae, the 

 upper and sometimes the basal short, not emerging. Lip 

 thick. Pyrenean center. 



5. ABIDA BRAUNII (Rossrn.). PI. 43, figs. 1 to 6. 



Shell with a narrow but distinct, half-covered umbilical 

 perforation ; rather small ; ovate-oblong, with rather acute 

 summit, corneous-buff, transparent, nearly lusterless, strong, 

 very finely and indistinctly striate. The 7 whorls are strongly 

 convex and united by a deep suture. Aperture half-ovate; 

 peristome expanded, with a distinct white lip, the outer lip 



