188 IIELICINiE. 



Genus HELIX, Linnaeus. 



Shell imperforate, or with the umbilicus covered, more or 

 less globose ; whorls convex, the last large, ventricose, de- 

 flexed at the aperture ; aperture lunately orbicular ; peri- 

 stome patulous or reflexed, columellar margin dilated, 

 callous. 



Syti. Pomatia, Beck. Cantareus, Risso. Lucena, 

 Hartm. Ccenatoria, Held. Cornucopia, Bom (monstro- 

 sity). Plebecula, Lowe. 



Ex. H. pomatia, Linnmus, pi. 77, fig. 3. Shell, H. 

 pomatia, fig. 3, a. 



The species of Helix, as properly restricted, appear to 

 have a wide geographical distribution, being found in 

 Europe, South and Central America, California, and China. 

 The species of Camcena inhabit southern Asia, the East 

 Indies, Birmah, China, and New Zealand ; the species of 

 Galaxias are widely distributed, some coming from the 

 Cape, some from Tranquebar and Bengal, some from North 

 Australia, and one from Europe. 



Species of Helix. 



aspersa, Midi. ligata, Mull. 



Buffoniana, Pfeiff. lucorum, Linn. 



crispata, Ferns. lutescens, Ziegl. 



eximia, Pfeiff. Mazzueli, Jan. 



figulina, Parr. nielanostoma, Drop. 



grisea, Linn. nitidiuscula, Sow. 



Gussoneaua, Shuttl. pomatia, Linn. 



helvacea, Phil. punctulata, Sow. 



Humboldtiana, Valenc. subplicata, Sow 



