418 PROCEEDINGS OF THE ACADEMY OF [May, 



wbicli seem to be missing in the coves of the Smoky mountains. 



Such are : 



Polygyra infleda. Polygyra clausa. 



Polygyra sayii. Vitrea hammonis. 



Polygyra altispira. Omphalina fidiginosa. 



Polygyra profunda. 



Several of these species have a range along the Cumberland 

 plateau considerably further south. But the assiduous collecting 

 of Ferriss and others during several years has wholly failed to 

 discover them in the coves of the Great Smoky range. Whether 

 the valley of the French Broad is practically the southern limit of 

 the range of these species along the main chain of the Appalachians 

 is not known, as the region south of Bluff mountain is as yet 

 wholly unexplored. But, from the comparatively few specimens 

 found in 1901, it would seem to be a fair inference that such was 

 the case. 



Taking all these factors into consideration, we would say that as 

 a whole, the cove fauna of the French Broad valley is more closely 

 related to that of the Roan region than to that of the Great Smoky 

 mountains. 



The same general fact appears also when the fauna of the higher 

 elevations is considered. 



The characteristic species of the Roan summit fauna are : 



Polygyra andreivsce (typical). Gastrodonta capsella jilacentula. 



Polygtjra wheatleyi. Gastrodonta gularis. 



Polygyra .-I'bpalliafa. Gastrodonta accrra. 



Polygyra altispira. Gastrodonta andreivsce. 



Omphalina rugeli. Gastrodonta ccelaxis. 



Omphalina suhplana. Gastrodonta lamellidens. 



Vitrinizonites latissimus. Philomyms ivetherbyi. 



Vitrea sculptilis. Philomycus hemphilli. 



Vitrea carolinensis. Sucdnea ovalis. 

 Gastrodonta capsella. 



Of these, 



Polygyra wheatleyi. Vitrea carolinensis. 



Omphalina subplana. Gastrodonta gularis (in its vari- 



Vitrinizonites latissimus. ous forms). 



Vitrea sculptilis. Gastrodonta acerra. 



