232 FERUSSACIA. 



14. F. NEBRODENSIS Benoit. 



Shell imperforate, long-fusiform, rather solid, smooth, 

 glossy, corneous; spire long-conic, the apex rounded; suture 

 impressed, narrowly margined. Whorls 7, regularly increas- 

 ing, the upper but slightly convex, the last cylindric, rounded 

 at base, about two-fifths the total length; columella narrow, 

 arcuate, callous; aperture semioval, angular above; peristome 

 simple, unexpanded, margins joined by a dilated callus. 

 Length 9.5, diam. 3, aperture 3.5 x 2 mm. (Benoit). 



Sicily: Madonie. 



Achatina nebrodensis BENOIT and TIBERI Illustrazione sis- 

 tematica critica iconographica de' Testacei estramarini della 

 Sicilla ulteriore, pt. 4, p. 235 (1862). Ferussada n., BENOIT, 

 Nuovo Catalogo Conch, terr. e fluv. Sicilia, p. 86. - - PFR., 

 Monogr. vi, p. 254. 



Said by Benoit to belong to the subgenus containing 

 cylindracea and emiliana, but differing from these by the 

 larger size, long-conic spire, simple peristome, extension of the 

 parietal callus and absense of a parietal tubercle. In his 

 catalogue of 1881 Benoit places it in the folliculus group, 

 but states that it is intermediate in shape between Azeca and 

 Ferussada. It has not been figured. 



15. F. AGILIS (Westerlund). 



Shell slender, cylindric-fusiform, summit long-conic, amber 

 reddish, glossy, irregularly striate especially at the suture. 

 Whorls 7, the upper convex, slowly increasing, the lower 

 three more rapidly increasing, a little convex, the last whorl 

 little larger than the penultimate ; suture broadly margined, 

 very little descending at the aperture. Aperture subpiriform, 

 long and very narrowly tapering above, dilated below, 

 . rounded, the outer margin moderately and regularly arched 

 forward in the middle. Columella short, curved, white, 

 truncate. Length 8 to 8.5, diam. 2 mm. (Westerl.). 



Algeria: Algiers. 



Cionella (Ferussada} agilis WESTERL., Annuaire du Musee 

 Zoologique de 1'Acad. Imp. des Sciences de St. Petersbourg 

 iii, 1898, p. 175. 



