286 HAAS: ABIDA AND CHONDRINA. 



of the French High Pyrenees, that is, the region of the water- 

 shed of the Garonne and the Adour. This form is not known 

 to me from the Spanish High Pyrenees ; all I saw from there 

 are C. b. tenuimarginata, which on the French side is re- 

 stricted to the eastern Pyrenees. 



Chondrina bigorriensis tenuimarginata (Des M.). PI. 26, 

 figs. 3 to 9, 12. 



Chondrina tenuimarginata Pilsbry, XXV, p. 31, pi. 2, figs. 

 4-5. 



Pupa leptocheilos Fag., Bull. Soc. Hist. Nat. Toulouse, 

 1879, p. 241. 



C. tenuimarginata var. elongatissima Pilsbry, p. 32, pi. 2, 

 fig. 6. 



C. goniostoma- Pilsbry, p. 33, pi. 2, figs. 13-14. — C. gonio- 

 stoma forma aucta Pilsbry, p. 33. — C. goniostoma var. juU- 

 ensis Pilsbry, p. 34, pi. 2, figs. 15-16. 



Pupa (Modicella) megacheilos goniostoma Bofill & Haas, 

 Est. VI, p. 128, pi. 1, figs. 46-55 (full literature upon occur- 

 rence in Spain). 



Pupa crassata Fag., Cron. Cient. Barcelona, XI, 1888, p. 

 127. — Chondrina crassata Pilsbry, XXV, p. 36. 



Pupa angulata Fag., Cron. Cient. Barcelona, XI, 1888, p. 

 104. — Chondrina angulata Pilsbry, XXV, p. 34. 



Pupa adeodati Fag., Butll. Inst. Cat. Hist. Nat., VI, 1906, 

 p. 134. 



As Pilsbry states, this form is almost identical with the 

 typical bigorriensis, only usually somewhat more fusiform and 

 lighter colored, and with the aperture somewhat angular 

 below. These characters are pretty universal, but not so con- 

 stant but that their gradual development has given proofs of 

 the relation of species and variety. 



The Fagot name leptocheilos, which its author changed later 

 to leptochilos, does not denote a new form, but was only a 

 substitute for the septensyllabic tenuimarginata. 



Des Moulins' var. elongatissima of tenuimarginata merely 

 stands for a much lengthened form. 



P. goniostoma Kiister is in my opinion completely identical 

 with tenuimarginata, a view nearly reached by Pilsbry. The 

 distributional areas of both are the same. Westerlund 's 



