20 CHONDRIN^E OF THE ALPIC CENTER. 



My knowledge of this form is solely from the original ac- 

 count. Probably the shell which has been identified by Sette- 

 passi as Pupa farinesii, from the same region, is a form of 

 oligodonta more advanced in tooth-reduction. I do not think 

 it is at all likely to be the Pyrenean species. Part of Sette- 

 passi's note follows. Cf. C. a. lessinica, p. 16. 



In the course of my researches in the Apuan Alps (a part of 

 the Apennines penetrating Tuscany from the Magra river, 

 Spezia, in Liguria, to the Serchio river, Lucca, in Tuscany) I 

 found Pupa farinesii almost everywhere. It is the real /an- 

 nesii, without teeth, mingled with P. avenacea Brug., but 

 always at high elevations. Its presence has already been an- 

 nounced by Dr. Raymond del Prete, who has had it in his col- 

 lection for several years. It is found together with another 

 form which has one tooth, the variety described by Moquin- 

 Tandon, 1855, p. 359, as var. denticus [sic], and with another 

 having the same tooth and two columellar callosities above, 

 var. oligodonta Del Prete (F. Settepassi, in Feuille Jeunes 

 Naturalistes, no. 520, 1914, p. 75). 



4. CHONDRINA CIANENSIS (Caziot). PL 1, fig. 15. 



Shell dextral, subfusiform, a little swollen, tapering above ; 

 8 convex whorls, slowly and regularly increasing, the last a 

 little less convex, not ascending to the aperture, having a 

 height of 3 mm. in a total height of 11. Suture oblique, well 

 impressed throughout; summit obtuse. Umbilicus narrow, 

 half encircled by a not very pronounced cervical gibbosity. 

 Aperture ample, nearly vertical (the axis a little inclined to 

 the right), oval, a little elongate, the upper border not an- 

 gular, lower margin regularly oval, columellar margin straight, 

 the margins converging and joined by a thin callous. In some 

 specimens there is a very thin angular tooth, a reduced pari- 

 etal, and a slightly more distinct columellar, but these teeth 

 do not exist in all individuals. There are no traces of palatal 

 teeth. Peristome thin, sharp, reflected chiefly in the lower 

 part and the upper part of the columella. The shell is ochra- 

 ceous, uniform, nearly of the same color as the rocks it lives 

 upon ; the first whorls are darker ; ornamented with irregular, 

 unequal, very oblique striae, more or less crowded, the upper 

 whorls not striate. Alt. 9, diam. 2% mm. (Caziot). 



