HAAS: ABIDA AND CHONDRINA. 277 



well with Pilsbry 's illustrations (Vol. XXIV, pi. 44, figs. 7, 

 10, 12). According to these, vergmesiana is a thick-shelled 

 form of pyren&aria with the aperture dilated below, and its 

 var. provide is nothing else than a weak-toothed form of 

 Midland's species. 



The true A. pyrencearia appears to he little known, as the 

 illustrations of Michaud and of Dupuy, which last Pilsbry 

 has copied (XX1V, pi. 44, fig. 9) are by no means good. The 

 Dupuy figure represents pyrencearia. with parietal and angular 

 lamellae perpendicular to the shell axis, whereas both of them 

 really stand exactly as in P. vergniesiana. My figured speci- 

 mens from Port de Salau (pi. 24, figs. 1 to 4) will show this. 



Pupa hospitii was treated by Pilsbry (XXV, p. 37) as a 

 Chondrina. In the appendix to the same volume, however, on 

 p. 371, he mentioned it as a form of pyrencearia, in conformity 

 with the conclusion of Bofill and myself (Est. I, p. 91, pi. 4, 

 figs. 10, 11). As I said already (I. c), in P. hospitii, from 

 Hospital de Venasque, Prov. Huesca, in the central Pyrenees, 

 I can only see a slender and narrow-mouthed pyrencearia, like 

 the specimens from that place illustrated in pi. 24, fig. 5. 



Pupa aidusensis Fag., which Bofill and I have already 

 placed in the synonymy of pyrencearia (Est., Ill, p. 99, pi. 3, 

 f. 14, 15), is only a more slender, more cylindric form of this 

 species, with weaker apertural folds, and is connected with 

 typical pyrancarki by all transitions, living with it in the 

 same locality. A cotype from Fagot is illustrated, pi. 24, fig. 6. 



Pupa aidusensis Fag. is the same as P. saxicola M.-T. Fagot 

 chose a new name for it because there was an older P. saxicola 

 Lowe. According to cotypes from Moquin-Tandon of his 

 saxicola, of which one is figured in pi. 24, figs. 7, 8, 9, there 

 can be no doubt that we have to do with a typical pyrencearia. 

 Krister's illustration of this form, copied by Pilsbry (XXIV, 

 pi. 44, fig. 13) is very imperfectly characteristic. 



Finally, Pupa clausilioides Boubee, of which I can figure a 

 good specimen from the Boettger collection (pi. 24, fig. 10), 

 is only an especially slender and fusiform shell, otherwise 

 differing in no respect from the range of variation of A. 

 pyr< ncearia. By its narrow shell it resembles certain forms 



