AZECA. 307 



This Pyrenean group of two or three very little known 

 species differs from Hypnophila by the less solid shell with 

 the columellar truncation scarcely developed, and the parietal 

 callus thin, not toothed posteriorly. The exact relationship 

 of Gomphroa to neighboring groups has not been worked out. 

 If s subordination to Azeca is provisional. 



15. A. BOISSII (Dupuy). PL 48, fig. 20. 



Shell long-cylindric, subrimate; aperture semi-rotund, sub- 

 pirif orni ; peristome unexpanded, rather acute, slightly white- 

 thickened within and opaque; margins unequal, joined by a 

 distinct callus. Whorls 6 to 7, nearly flat, the last forming 

 over half the shell 's length ; columella with the distinct indi- 

 cation of a truncation at base. It is corneous, transparent, 

 whitish and very glossy. Length 6, diam. 1.5 mm. (Dupuy.) 



French Pyrenees, especially the Pyrenees orientales and in 

 the mountains around Toulon. 



Zua boisii DUPUY Hist. Nat. Moll. terr. et d'eau douce 

 Prance, p. 332, pi. 15, f. 9 (December, 1850). Azeca b., 

 BOURGUIGNAT, Amen. Malac. ii, p. 187. Ferussacia (Hypno- 

 phila ?) b., KOBELT, Iconogr. vii, p. 36, pi. 188, f. 1199 

 (copied from Dupuy) .-- Cionella boissyi WESTERLUND, 

 Fauna iii, p. 150. Zua boyssii Dup., LOCARD, Coq. terr. de 

 France, in Ann. Soc. d 'Agriculture, Sci. et Industrie de 

 Lyon, 1895, p. 136, fig. 341-2. Achatina lubrica var. a. 

 fusiformis Picard, 1840, MOQUIN TANDON. 



A little-known species, very rare in collections, and not 

 known to me by specimens. Moquin-Tandon identified Acha- 

 tina lubrica var. fusiformis Picard as identical with boissii 

 Dup., but I think erroneously. The two were described from 

 opposite ends of France. 



Var. dupuyana 'Bgt. ' Fagot. 



Glassy, very smooth, pale translucent-corneous, of 6 nearly 

 flat whorls ; more obese than boissii. Length 6.5, diam. 2 mm. 



Pyrenees-orientales near La Preste, at la Rourede d'en 

 Ribes, and along the Tech, up the river from the bridge, on 

 the path to Costa Bona. 



Azeca dupuyana 'Bgt.,' FAGOT, Monogr. des esp. Francaise 



