42 HELICID^. 



Eremina, Pfr., 1855. (Erinna, Morch. 1865. Eremophila, 

 Kobelt, 1871.) Shell depressed globose, sharplj^ striate, creta- 

 ceous, base convex. H. desertorum, Fursk. (xcv, 59). 5 sp. 

 Egypt. 



"Tac/).ea, Leach, 1820. (Archelix, Albers, 1850. Cepsea, Held, 

 1837.) Shell imperforate, or umbilicus covered, turbinately 

 globose or depressed ; last whorl ventricose, deflected at the 

 aperture, other whorls somewhat flattened ; aperture obliquelj^ 

 rounded ; peristome reflected ; columellar lip narrow, callous, 

 gibbous. 11 sp. Europe. H. hortensis, Miill. ,xcv, 61), the 

 common garden-snail of Europe, is a representative of this group, 

 Avhich includes several species. Introduced into the United 

 States, it has become acclimated at several localities, 



Rhagada, Albers, 1860. Shell imperforate, subglobose, striate, 

 white," fasciate; whorls regularly increasing, slightly convex, 

 the last slightly deflected in froiit, base convex ; aperture 

 obliquely lunar ; peristome a little expanded, labiate within. E. 

 Reinga, Gray (xcv, 60). 6 sp. Australia, New Zealand. 



Pomatia, Beck, 1837. (Coenatoria, Held, 1837.) Shell globose, 

 striate, corneo-calcareous, umbilicus partly covered or imper- 

 forate, usually fasciate; whorls 4-6, convex, the last large, 

 ventricose, descending in front ; aperture Innately orbicular , 

 peristome patulous or straight, callous within, columellar margin 

 reflected, usually callous. H. pomatia^ Linn, (xcvi, 76). 45 sp. 

 Mostly Europe, Western Asia and Northern Africa. Throughout 

 Southern Europe the breeding of the edible snail {Helix pomaiia) 

 is very extensively carried on ; it has been stated that Marseilles 

 ships annually to Paris and London from 500 to 750 tons of this 

 mollusk, and Genoa exports an equal quantity. Foreign resi- 

 dents in the United States are believed to be large consumers of 

 this delicacy. In the markets of the warmer regions of Europe 

 basketfuls of live snails are among the most familiar articles of 

 food exposed for sale. 



Ca?i(!arei(s, Risso, 1826. (Lucena, Hartmann, 1821. Tapada, 

 Gray, 1840.) Paucispiral, thin, diaphanous, imperforate, peris- 

 tome simple, sharp. H. aspersa, Born. 



Gryj)tomphalus, Moquin-Tandon, 1855. Rather thin, imper- 

 forate ; with thin, twisted columella ; epiphragm plane, mem- 

 branaceous. H. aspersa^ Miiller (i, 17, scalariform). 13 sp. 

 Europe, Australia, Mexico. 



Macularia, Albers, 1850. (Otala, Moquin-Tandon, 1855.) Im- 

 perforate, turbinate or globosely depressed ; whorls four or five, 

 convex, the last deflected near the aperture ; aperture obliquely 

 rounded ; peristome sharp, lipped ; columellar lip dilated, ap- 

 pressed, covering the umbilicus, ff. Niciensis, Fer. (xcv, 62). 

 44 sp. Mediterranean region. 



Iberus^ Montfort, 1810. Shell narrowly umbilicated, depressed 



