Cincinnati Society of Natural History. 



occurrence of this species at localities on Iron Mountain and 

 the Roan, in this county. It has the peculiar habit of affect- 

 ing the granitic and quartzite ridges, where it is found under 

 leaves of the Rhodendron and Kalmia with which they are 

 overgrown. I am forced, however, to abandon the suggestion 

 made in that article, that this species and inornatus Say may 

 be the same. The embryonic shells of this species are very 

 densely wrinkled until they have attained a growth of three 

 or three and one-half whorls. The under aspect of the two 

 species is much alike — almost identical. If there is any dif- 

 ference, subplanus is the more highly polished. This is one of 

 the most interesting species of Zonites, for several reasons. 

 If we are to have these hair-splitting definitions, this species 

 and inornatus must be removed from Omphalina. 



26. Zonites rugeli W. G. Binney. This, the finest North 

 American Zonites, was stated by me in the article quoted 

 above to extend up the Roan to 5,500 feet. We have since 

 found it on the very summit, at an altitude of 6,400 feet, there 

 associated with Mesodons wheatleyi and andrewsi. I found 

 this shell in 1877, during a trip made through the gorge of 

 the Ocoee, but referred it. unwittingly, to the globular form of 

 inornatus figured by Mr. \V. G. Binney. 



In the article referred to I mentioned "a variety of this 

 shell, or possibly a distinct species, which differs in the fol- 

 lowing particulars: It is less polished: the color is a dark, 

 smoky green ; the sutures are less impressed, so that the 

 whorls have a peculiar, overlapping appearance; the spire 

 slopes away, as if the whorls had been cut down, removing 

 their outer convexity, and giving the shell a peculiar profile." 

 I will now add that I have found two or three specimens 

 additional of this form. But they are so rare, and so far apart, 

 that I fear they may be extreme varieties of this species. 

 One young shell, however, shows the embryonic whorls to be 

 very different. I call the attention of students and collectors 

 to this form, which seems to be a very distinct one, and, prob- 

 abl> T , "a new species!" Rugeli has the habit of living in 

 the leaves among the boulders and debris of cliffs, in damp 

 places, and varies greatly in size. Our largest specimens have 

 a major diameter of 39 mm. In passing from these larger 

 species of Zonites, I again wish to ask the assistance of col- 



