368 Tioo New Hiieciea of Zonites. 



XXII. — Descripiio)i of Two New Species of Zonites from 



Tennessee. 



BY THOMAS BLAND. 



Read May 21st, 1883. 



Zoiiile§ Wheal leyi, nov. sp. 



T. umbilicata, depressa, tenuis, nitens, pellucida, fusculo-cornea, de- 

 licate striatula ; spira sub-planulata ; sutura leviter impressa ; anfr. 4J, 

 convexiusculis, ultimus basi convexior, ad aperturam rapide accrescens, 

 vix descendens ; umbilicus pervius ; apertura depressa, oblique lunaris ; 

 peristoma simplex, acutum, marginibus approximatis, callo tenui junctis. 



Fig. I. 



Shell umbilicated, depressed, thin, shining, pellucid, 

 brownish horn-colored, finelj^ striated ; spire subplanulate, 

 suture slightly impressed ; whorls little convex, the last 

 more convex at the base, rapidly increasing at the aperture, 

 scarcely descending ; umbilicus pervious ; aperture de- 

 pressed, obliquely lunate ; peristome simple, acute, the 

 margins approximating, joined by a thin callus. 



Diam., major 5, min. 3^ ; Alt., 2 mill. 

 Z. Wheatleyi. 



Habitat. — The Cliffs, Knoxville, Tennessee, Mrs. George 

 Andrews ; also, Tiverton, Khode Island, J. D. Thomson. 



Remarks. — Tliis, with the following species, was discovered 

 and communicated to me, in 1879, by Mrs. Andrews, who tlins 

 described the locality in which the two siDecies were found.: — 

 " The Cliiis rise up 200 feet on the south side of the river, — 

 they are very steep and rocky, face the north, are almost always 

 shady, damp, and covered with mosses and ferns. I collected 

 the shells on the ledges of the rocks among the dead leaves, at 

 an elevation above the river of about 100 feet. I have not found 

 either of the spiecies in any other locality." 



Mr. J. H. Thomson, to whom I submitted sjDecimens, sent 

 to me examples of the same species collected by him, "on a 

 high rocky ledge, covered with old trees, at Tiverton, Ehode 

 Island." 



