114 IIELICELLIN.E. 



Oparica, Anton. sexlamellata, Pfeiff. 



pentodon, Mke. stellata, Gould. 



rubiginosa, Gould. tichostoma, Pfeiff. 



Genus ZONITES, Montfort. 



Shell widely umbilicated, orbiculately convex or discoidal, 

 variously decussated or striated above, smooth and shining 

 below ; whorls gradually increasing ; aperture obliquely 

 lunar ; peristome straight, slightly thickened internally. 



Si/ti. Mesomphix, Rqfin. Tragomma, Held. iEgopis, 

 Fitz. iEgopsis, Hartm. 



Ex. Z. Algira, Linnmts, pi. 71, fig. 6. Shell, Z. Al- 

 gira, fig. 6, a. 



The sjoecies of this genus, as restricted, are entirely 

 European, being found in France, Istria, Illyria, Dalmatia, 

 &c. ; their usual habitat is under fallen leaves and among 

 decaying vegetable matter. The species of Trochomorpha 

 are from the islands in the Pacific, the Philippines, Moluccas, 

 Java, and a few are from Bermuda and Central America; 

 Bourbon, Bengal, and the Cape are the localities given for 

 the species of Ttotula ; the species of Videna are from the 

 Indian and Western Australian islands, the Philippines, 

 New Guinea, Java, and China. 



Species of Zonites. 



acies, Partsch. concolor, Ferus. 



Albanica, Ziegl. Cressida, Gould. 



Algira, Linn. Croatica, Partsch. 



carica, Roth. fuliginosa, Griff. 



Chiron, Gray. Geuionensis, Ferus. 



corupressa, Ziegl. obscurata, Adams and Eeeve. 



