304 AZECA. 



9. A. INCERTA 'Benoit' Bgt. PL 47, figs. 15, 16. 



Shell cylindric-oblong, fragile, glossy, pellucid, smooth, cry- 

 stalline-corneous, the apex rather obtuse. Whorls 7, a little 

 convex, separated by an impressed, margined suture, the last 

 whorl one third the total length. Aperture semi-oblong, al- 

 most vertical ; peristome simple, acute, not thickened, the outer 

 margin simple; columellar margin with a straight white 

 thread-like callus; margins joined by a thin callus with a 

 thread-like tubercle near the insertion of the outer lip. 

 Length 5, diam. 1.25, aperture 1.75 x 1 mm. (Bgt.). 



Island of Lipari, in the district called Renella at monte 

 della fossa. (Ben.) 



Azeca incerta (Bulimus incertus Benoit MSS.) BGT., Revue 

 et Mag. de Zool. 1858, pi. 18, f . 15-17 ; 1859, p. 19 ; Amenites 

 Malac. ii, p. 108, pi. 14, f. 15-17. PFR., Monogr. vi, 257. 

 Achatina incerta BENOIT, Illustr. test. Sicil. 1862, p. 232, 

 pi. 5, f. 31. Ferussacia (Hypnophila) incerta KOBELT, 

 Iconogr. n. F. vii, p. 22, f. 1171. Cionella (Zua) incerta 

 WESTERL., Fauna iii, p. 148. 



This species differs from A. cylindracea by the smaller, 

 more glossy shell, more translucent, the suture more distinct, 

 whorls more convex, etc. Description and figure from Bour- 

 guignat. 



10. A. SILVICULA Benoit. 



Shell imperforate, cylindric, smooth, translucid, composed 

 of 8 slightly convex whorls separated by a superficial suture ; 

 apex obtuse. Aperture long-ovate, rather upright ; peristome 

 obtuse ; columellar margin with a strong callus not tubercu- 

 late. Length 7, diam. 3 mm. (Benoit). 



Sicily: Madonie (Benoit). 



Azeca silvicula BEN., Nuovo Catalogo Conch, terr. e fluv. 

 Sicilia, 1881, p. 82. Cionella silvicola Ben., WESTERLUND, 

 Fauna iii, p. 151. 



Closely related to A. emiliana, but it differs by having 

 more whorls which are more convex, by the strong callus of 

 the columellar margin and the want of a tubercle on the 



