TESTACELLA. 9 



T. BISULCATA, Risso. PI. 1, figs. 12, 13. 



Shell ovately auriform, narrowing in front, depressed, planu- 

 late above, and regularly finely striate ; the minute, rudimentary 

 spire produced ; columellar margin depressed, narrower and 

 subtruncate anteriorly ; epidermis reddish brown, rarely whitish, 



interior subpearly. Length, 5-7 mill. 



S. France, N. Italy. 

 Grateloup has named it T. Galloprovincialis. 



T. WILLIAMSIANA, Nevill. PL 1, figs. 16, It. 



A subfossil form, 5 mill, long, recently obtained at Mentone ; 

 it is nearly allied to T. bisulcata, but some differences will 

 become apparent upon comparing the figures of the two species. 



T. GESTROI, Issel. 



Ovately trigonal, subpellucid, light corneous ; slightty convex 

 and irregularly concentrically rugose above ; apex minute, 

 smooth, strongly recurved, adhering to the columella ; columella 

 white, translucent, narrow, curved, and slightly twisted, almost 

 reaching the base of the aperture, subtruncate. 



Length, 5*5 mill. ; lat., 4 mill. 



Island of Sardinia. 



I have not been able to consult the original description and 

 figures of this species. 



T. BOURQUIGNATI, Massot. PL 1 , figs. 20-22. 



Shell oblong-ovate, not thick, corneous and striate above ; 

 apex small, obtuse, recurved, not prominent, close to the 

 posterior margin, but extending beyond it; columellar margin 

 rather thin, flattened, curved, subtruncate in front. 



Length, 7'5 mill. 



Around "La Preste" Eastern Pyrenees. 



T. FISCHERIANA, Bourg. PL 1, figs. 14, 15. 



Shell ovate, slightly convex, rugosely striate and corneous 

 above ; apex smooth, well-curved, separated from the columella, 

 whitish, curved, anteriorly deflexed, not truncated. 



Length, 6 mill. 



Constantine, Algiers. 



It is T. bisulcata, var. major, of Gassies and Fischer's Mono- 

 graph ; its very close relationship to that species is seen at a 

 glance. 



