THE NAUTILUS. 123 



wliicli important discovery we are also indebted to Professor Smith), 

 it makes a most attractive appearance. 



The following list cannot be complete, or even nearly so, as the 

 writer was able to do only occasional field work in a busy pastorate 

 of a single year at, Hunlsville. The species listed wen; collected 

 partly on Monte Sano and partly from the contiguous territory. 

 The determinations have been made largely by Mr. Bryant Walker, 

 although I am indebted to Mr. Geo. H. Clapp and to Professor 

 Smith for much help. 



GAhTKOPODA. 



ff elicit/ a. 

 Helicina orbiculata Say. Common. Thousands may be gathered 



on damp days from the cedar trees or from the moss-grown limestone 

 rocks. The Pyramidulus and Pup/dee are also lovers of cedar. 



Helicinidee. 



Polygyra plicata Say. 



Polygyra troostiana Lea. This and the preceding species are gre- 

 garious. But the one species is not apt Jo be found in association 

 with the other. 



Polygyra fraudulenta Pils. Common on all the mountains, but 

 Polyyyra tridenlnta Say, though probably here, was not collected. 



Polygyra infiecta Say. 



Polygyra albohibris Say. 



Polygyra fuscolabris Pils. The racial validity of this species im- 

 presses the collector more than it would the student within doors. It 

 is a shell of the mountain tops, choosing the crevices of large rocks 

 and cave entrances preferably, though sometimes found under logs. 

 It is not easy to bridge the gap between this and (tlbolabris by a 

 series collected in the same locality. The pink lip, however, is not 

 a constant character, being nearly as often while as pink. But its 

 larger size, splendid symmetry and richer color readily endorse it for 

 specific rank. 



Polygyra zaleta Binn. More common on the lower ridges. Here 

 it often develops a lilac u bloom." Polygyra elcrutn Say, not found 

 on Monte Sano, is reported from Gurley, Alabama, collected by 

 Prof. Smith. 



Polygyra palliata Say. Collected by Prof. Smith in the lowlands 

 south of Huntsville, July, 1910. 



