ZONITES. 137 



whorls 6-6 J, suture margined, periphery rather acutely carinated 

 and narrowly white-banded, base whitish, shining, smooth. 



Diam., 23 mill. 



t'kraine, Bosnia, Carniola, Epirus. 



It is H. Croalica, Fer., and H. sexvolua, Parr. 



Yery closety related to Z. Croaticus, but is smaller, with less 

 convex whorls, less prominent growth-lines and more plainly 

 granulated surface, and more apparent keel. It connects 

 Croaticus with the next species. 



Z. GEMONENSIS, Fer. PL 45, figs. 94-96. 



Rather widely umbilicated, yellowish, striated and subdecus- 

 sated above, smooth and shining below; whorls 6, periphery 



carinate. Diam. 18 mill. 



Gemona, Friuli, Northern Italy. 

 H. isodom'a, Jan., is :i synonym. 



7.. CATOLEIUS, Bonrg. PL 45, figs. 97-99. 



Rather narrowly umbilicated, fragile, thin, corneous chestnut- 

 colored, subpellucid, closely striated above, smooth and shining 

 below ; whorls 5^, periphery with a thread-like carina, partially 



appearing at the suture. Diam. -23 mill. 



Assouan, Egypt. 

 A somewhat aberrant form. 



Z. INOPINATUS, Desh. PL 45, figs. 100-2. 



Moderately umbilicated, thin, with growth - striae above, 

 smoother below, light yellowish brown ; whorls 6, the periphery 

 obtusely angulated, with a narrow whitish zone ; lip a little 



expanded below. Diam. 25 mill. 1/f . m , -7 



Moupin, Thibet. 



Certainly not a member of this group, in which Pfeiffer has 

 included it. 



Z. LATISSTMUS, Dohrii. (unfigured). Hasrat Sultan 



S. E. of Samarcand. 



Subgenus HYALINIA, Ferussac, em., 1819. 

 Section YITREA, Fitzinger, 1853. 



In this group I have followed the arrangement of Clessin's 

 paper on the section Yitrea, published in Malakozoologische 



