14 CJECILIOIDES OF CENTRAL EUROPE. 



and the less curved columella, which is only very obliquely and 

 weakly truncate at the base. Length 5.25, diam. 1.62 mm. 

 (Jahrb. D. M. Ges., vi, 1879, p. 398, pi. 10, f. 9.) 



Var. gemmellariana (Benoit). PL 2, fig. 28, 31. Shell 

 elongate-cylindric, slender, polished, glossy, hyaline, whitish; 

 spire turrited, slightly tapering, the apex mamillate; suture im- 

 pressed, widely margined, whorls 6, subplanulate, not rapidly 

 increasing, the last cylindric, as long as the spire. Columella 

 subarcuate, at base narrowly and obsoletely truncate. Aperture 

 narrow, oblong-acuminate ; peristome simple, unexpanded, 

 acute, the margins joined by a very thin callus, right margin 

 arching forward. Length 4.4, diam. 1.5, aperture 1.66 x 0.75 

 mm. (Ben.) 



Sicily: Palermo. 



Achatina g., BENOIT, Illustr. Test, estramar. Sicilia, 1862, p. 

 248, pi. 8, f. 9. PFR., Monogr. vi, 242. OnY. g., BGT., Rev. 

 et mag. zool. xvi, 212. 



Benoit' s original figure is copied, fig. 31. I have also illus- 

 trated one of several specimens before me, received from Benoit. 

 This shows a form probably not distinguishable from liesvillei 

 Bgt., having a slightly contracted- attenuate spire, the whorls 

 distinctly convex, the convexity chiefly close below the suture. 

 There is a conspicuous, spirally entering callous ridge on the 

 parietal wall close to its junction with the columella, but other- 

 wise the parietal and columellar margins form nearly a straight 

 line. As usual, the first whorl increases very fast, the next 

 whorl scarcely widens, and the last 2 whorls increase regularly. 

 Length 4.4, diam. 1.3 mm.; whorls 5. 



Younger shells agree better with Benoit' s description, yet 

 even these show the trace of a callous lamella. I am disposed 

 to place the form in the synonymy of liesvillei. 



Var. tiberiana (Benoit). Vol. xix, pi. 51, fig. 5. Close to 

 C. gemmellariana but distinct by the greater size, the upper 

 whorls more slender and delicate, the last whorl much more 

 swollen, and by the greater number of whorls, 6, and the piri- 

 form aperture. (Ben.) 



Sicily: Palermo. 



Csecilianella tibenana BEN., Nuovo Catalogo delle Conch, terr. 



