CHONDRINA, SECTION SOLATOPUPA. 57 



Section Solatopupa Pilsbry. 



Solatopupa PILS., Man. Conch., XXIV, p. 234, type Pupa 

 similis (Nov. 9, 1917). 



The shell is calcareous though thin, opaque, whitish with 

 more or less cinereous, violaceous or bluish tint, and often 

 marbled with brown ; having angular, parietal and columellar 

 lamella*, upper and lower palatal and basal folds, or lacking 

 teeth. Type C. similis (Brug.). 



Distribution : southern France, northern and western Italy 

 south to Tuscany; a group of the olive zone, living on lime- 

 stone rocks exposed to the sun. 



a 1 . Palatal folds well developed ; 5 to 7 teeth. 



C. similis, no. 41. 

 or. No palatal folds. 



6 1 . Shell conic, thin and fragile, toothless. 



C. psarolena, no. 43. 



6 2 . Shell cylindric, opaque, teeth 3 to 0. 



C. pallida, no. 42. 



41. CHONDRINA SIMILIS (Brug.). PL 4, figs. 1 to 4. 



The shell is shortly rimate, cylindric-fusiform, opaque, pale 

 cinereous or nearly white, generally more or less clouded and 

 obliquely flamed with cinereous or vinaceous gray, the upper 

 whorls of a chamois tint. More or less distinctly striate. 

 Upper whorls strongly, the later ones weakly convex, the base 

 rounded. Aperture is shortly oval, brown within, having 5 

 whitish teeth : angular lamella short and low, joining the lip. 

 Parietal lamella rather strong. Columellar lamella obliquely 

 ascending within, not emerging, a very low prominence (or a 

 small, blunt lamella) below it. Upper and lower palatal folds 

 subequal, not approaching the peristome. Peristome white, 

 somewhat expanded, scarcely thickened. 



Length 10.5, diam. above aperture 3.2 mm. ; Sy 2 whorls 

 (Marseilles). 



Length 14, diam. above aperture 3.6 mm. ; 10 whorls 

 (Grasse). 



Length 13, diam. above aperture 4 mm.; 9y 2 whorls (Nice). 



