26 C.V.CILIOIDES OF SICILY. 



xvi, 1864, p. 211, no. 48. PFR., Monogr. vi, p. 253. (.'sec 

 ella r. BENOIT, Catalogo, p. 87. ( y ochlicopa ?-., CAFICI, II. Nat. 

 Sicil. i, p. 204. 



From specimens before me from Benoit. this does not seem 

 to differ materially from G. petitiana except in being smaller. 

 I have figured a Benoit shell measuring 4.4x 1.3 mm. There 

 is no noticeable parietal callus nodule or ridge; the outer lip is 

 very strongly, evenly arched forward; and the last whorl 

 descends very obliquely in the middle of its length. 



Var. petitiana (Benoit). PI. 2, tigs. 23, 24. Shell elongate- 

 fusiform, thin, polished, glossy, h} T aline, whitish. Spire conic- 

 turrite, the apex a little obtuse; suture impressed, narrowly 

 margined. Whorls 6, slightly convex, rapidly increasing, the 

 last nearly flat, longer than the spire. Columella subarcuate, 

 abruptly truncate at the base. Aperture lanceolate, narrow. 

 Peristome simple, unexpanded, acute, the margins joined by a 

 very thin callus. Length 5, diam. 1.66, aperture 2x0.75 mm. 

 (Ben.). 



Sicily: Mt. Bellocampo and Billiemi near Palermo. 



Achatina petitiana BEN., Illustr. Test. Estramar. Sicilia 1862, 

 p. 247, pi. 8, f. 8. PFR., Monogr. vi, 242. Carcttianetta p., 

 BGT., Rev. et Mag. Zool. xvi, 1864, p. 212. Benoit, Catalogo, 

 p. 88. 



Several lots, all from Benoit, are before me. The extremely 

 thin hyaline shell has a conspicuously margined suture. The 

 upper part of the spire is slightly contracted. The first whorl 

 increases in width very rapidly, the next H increase but little; 

 then the width increases rapidly again, the suture descending 

 more obliquely. Its descent is most oblique in the middle of 

 the last whorl, somewhat less so towards its end. The outer 

 lip arches very strongly forward, the greatest convexity being 

 below the middle. The parietal wall has only a thin callous 

 film. The columella is concave, has a callous edge, and is 

 obliquely but quite distinctly truncate at the base. Length 

 4.3, diam. 1.3mm.; whorls 5. 



17. C. STEPHANIANA (Benoit). PI. 2, figs. 29, 30. 



Shell elongate-fusiform, rather solid, polished, milk-white. 



