Two Ne'W Sjjecies of Zonife.'<. 3()lt 



This species, Z. Wheatleyi, is moie iieurly allied to Z. viridu- 

 lus, Mke, than to any other North American form, but differs 

 from it, especially in the form of aperture, in the descending 

 last whorl, and in having a Avider umbilicus. 



I dedicate the species to the memory of my hite valued and 

 lamented friend, Chas. M. Wheatley. 



Z(>nile§ pctrophilus, nov. sp. 



T. late umbilicata, depresso-subglobosa, tenuis, nitens, transhicens, albida, 

 irregulariter striata ; sutura mediocris ; anfr. 5^ — 6, convexiusciilis, ulti- 

 mus convexior, non descendens ; umbilicus extus late excavatus, perspecti- 

 vus ; apertura rotundato-lunaris ; peristoma simplex, paululo subincrassa- 

 tum, saepe roseum, margiue columellari reflexiusculo. 



Shell broadly umbilicate, depressed; subglobose, thin, 

 shining, translucent, whitish, irregularly striated ; su- 

 ture moderately impressed; whorls 5^ — 6, rather convex, 

 the last more convex, not descending; umbilicus widely 

 excavated externally, pervious ; aperture roundly lu- 

 nate ; peristome simple, somewhat thickened, often 

 rose-colored, the columellar margin slightly reflected. 



I 1 Diam., major 6, min. 5, — 5^ ; Alt. fere 3 mill. 



Z. petrophilus. 



Habitat. — The Cliffs, Knoxville, Tennessee, found with Z. 

 Wheatleyi, Mrs. Geo. Andrews. 



Remarks. — I'his species is, in general form, nearly allied to 

 Z. arhoreus, but the color is different, the stri^ are more de- 

 veloped, and the umbilicus is much wider. 



My friend, Mr. W. G. Binney, examined the dentition of 

 Z. petropliilus, and favored me with notes on the subject. He 

 found the teeth 15 — 1 — 15, with two perfect laterals, one only 

 on each side. Z. viriduliis has the same number of laterals, 

 but many more marginals. 



I would express my deep obligation to Mrs. Andrews for her 

 uniform kindness and liberality in supplying me, during many 

 years, with numerous rare and interesting species. 



