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 ; slightly 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. BOURGUIGNATI, 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. Usulcata, var. major, of Gassies and Fischer's Mono- 

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

 glance. 



