AGARDHIA. 139 



straightened ; peristome continuous, free, lipped within, ex- 

 panded and reflected throughout, especially on the lower 

 margin. Length 5, diam. 2 mm. (Bourguignat). 



Length 4.3, diam. 1.65 mm. ; 9 whorls. St.-Martin. 



Length 4.2, diam. 1.7 mm. ; 8y 2 whorls. St.-Martin. 



Alpes-Maritimes : lower layer of the Tumulus de Nove, 

 near Vence, abundant (Bgt.) ; near Saint-Martin de Lan- 

 tosque, about 50 living specimens under an old stump (Charles 

 Hedley). 



Pupa blanci Bourguignat, Cat. Moll. plan, de Nove, in Soc. 

 Sci. Lettr. et Arts de Cannes, iii, 1873, p. 282. — Pollonera, 

 Bull. Soc. Malac. Ital., xii, 1886, p. 218, with var. niciensis, 

 p. 219, pi. 6, f. 3, 4.—Coryna blanei Bgt., Caziot, Etude MoU. 

 terr. et flu v. Monaco et Dep. des Alpes-Maritimes, 1910, p. 

 335, with var. niciensis Poll., p. 336. — ? Coryna curia Locard, 

 see below. 



"It differs from P. ferrari, the only comparable species, by 

 the more strongly and vigorously striate shell, the more sinu- 

 ous outer lip, thicker, more developed and provided with a 

 stouter triangular peristomial tooth; by its narrower aper- 

 ture, relatively higher, by the umbilical perforation far more 

 open, funnel-shaped, so that the whorls can be seen within" 

 (Bgt). 



The chief difference from ferrari is in the teeth, especially 

 the lip-tooth, which is certainly much larger in blanci so far 

 as the specimens at hand are concerned. Generally the aper- 

 ture of blanci is narrower than in the Italian species, and the 

 umbilicus is somewhat larger. The striation can be exactly 

 matched in some examples of ferrari. The strige are strong 

 but rounded, and about equal to their intervals. They are 

 rather oblique (retractive) on the spire, more nearly vertical 

 on the last whorl, where I count about 13 in a millimeter. 



Flach, who collected long series of A. ferrari, found the 

 proportions of shell, aperture and teeth quite variable, and 

 it appears likely that blanci is merely a western subspecies of 

 that common north Italian species, as he claimed. 



This is a quite local form, its known localities falling within 

 an area of about 25 miles along the coast, and in one 



