CHONDRIN.E OF THE ALPIC CENTER. 19 



Var. plicatula Adami. Shell subfusiform, brown, the aper- 

 ture subangular below, brown within ; 5 subequal palatal plicae ; 

 columellar margin plicatulate. Whorls 8-9. Length 8-9, 

 diam. 2^-3 mm. Heights of the limestone mountains in the 

 Illasy valley (Mt. Malera, Zevola and Campobruno), Province 

 of Verona. Near to megachettos Jan. (Pupa avenacea var. 

 plicatula Adami, Bull. Soc. Malac. Ital., xi, 1885, p. 221.) 



Var. maritima Loe. Subcylindric-elongate, slowly tapering, 

 8-9 quite convex whorls, the last a little larger ; suture deep ; 

 aperture quite large, oval-rounded, a little angular at the 

 base; 2 superior folds, the second approaching and much im- 

 mersed ; 2 subequal and deeply placed columellar folds ; 3 pala- 

 tals, of which only one or two reach the peristome ; peristome 

 sharp, expanded, white-rose or red ; shell vinous-brown, glossy, 

 ornamented with striae, occasionally obsolete. Length 10, 

 diam. 3 mm. Saint-Martin-de-Lentosque (Alpes-Maritimes). 

 (Pupa maritima Locard, Ann. Soc. d'Agric. Lyon (7), iii, 

 1906, p. 186. Cf. CAZIOT, Etude Moll. Monaco, 1910, p. 316.) 

 Not Pupa maritima Pfr. 



This form may perhaps be referable to megacheUos. The 

 name was preoccupied. 



3. CHONDRINA OLIGODONTA (Del Prete). PL 1, figs. 13, 14. 



Shell cylindric-conic, ashy-brown ; aperture having a single 

 columellar lamella, the parietal and palatal folds rudimentary, 

 often wanting ; right lip more arcuate. 



This variety, which in external appearance differs little 

 from the type [avenacea] and even less from var. apuana 

 Issel, is well distinguished by the characters of the aperture, 

 which has a single superior columellar tooth (and even this 

 smaller than in the type), whilst the other superior and 

 palatal teeth can scarcely be seen, or are wholly wanting. The 

 exterior wall is characterized by wanting the three little 

 white, parallel lines of the type [of avenacea], which corres- 

 pond to the internal palatal teeth (Del Prete). 



Italy : Apuan Alps, Liguria, only at considerable elevations. 



Pupa avenacea Brug., var. oligodonta Del Prete, Bull. Soc. 

 Malac. Ital., v, 1879, p. 80, pi. 1, f. 13-15. 



