CHONDRIN/E OF THE PYRENEAN CENTER. 29 



(a. Species of the Pyrenees, Catalonia and Aragon, to 



Valencia. ) 



9. CHONDRINA BIGORRIENSIS ('Charp.' Des M.). PL 2, figs. 1, 

 2, 3, 7. 



The shell is fusiform-conic, perforate and rimate, hessian- 

 brown, fading to cinnamon-brown at the summit ; but slightly 

 glossy; finely and regularly rib-striate (but varying in degree 

 and distinctness). Whorls moderately convex, the last a little 

 flattened over the palatal region, which is marked with three 

 white lines ; the base compressed into a rounded keel ; whitish- 

 rufous towards the lip. Aperture oblong, cinnamon within, 

 having 8 teeth: angular lamella long, continuous with the 

 spiral ; parietal long and low ; columellar larger and longer 

 than the subcolumellar ; 3 equal, rather long palatals, and a 

 very minute or subobsolete and inconspicuous suprapalatal. 

 Peristome white, but slightly expanded, a rather thick cinna- 

 mon callous within the throat, but not thickened at the edge. 



Length 9.2, diam. incl. perist. 2.8 mm. ; 8y 2 whorls. 



Length 7, diam. incl. perist. 2.4 mm. ; iy 2 whorls. 



Central Pyrenees: type loc. Bagneres de Bigorre (Hautes- 

 Pyrenees). 



[Pupa megacheilos] var. d, pusilla (Pupa, bigorriensis 

 Charp.), DES MOULINS, Actes Soc. Linn, de Bordeaux, vii, 

 1835, p. 163, pi. 2, f. ol, o2. - - ? P. farinesii var. bigoriensis 

 Charp. subvar. ventricosa- DUPUY, Bull. Soc. d'Hist. Nat. Tou- 

 louse, xiii, 1879, p. 55 (La Preste; no description). --Pupa 

 bigorriensis GOURDON, Moll. Mts. de Luchon et de la Barousse, 

 Bull. Soc. d'Hist. Nat. Toulouse, xv, 1881, p. 92 (dist. in 

 Hautes-Pyrenees and Haute-Garonne). -- FAGOT, same Bull., 

 xvi, 1882, p. 73 (Pic du Gar). Pupa megacheilos var. gracilis 

 EOSSM., Iconogr., ii, pt. 11, 1842, p. 10, pi. 53, f. 729 (Mont- 

 pellier and Barrege). 



Mr. Ancey has reported (as Pupa bigorriensis Charp. var. 

 sinistrorsa} finding a single sinistral specimen among normal 

 specimens from Cazaril, Bigorre (Le Naturaliste, i, 1881, p. 

 403). 



Des Moulins ' original description follows : 



