44 MALACOZOA. GASTEROPODA. PULMOBRANCHIATA. TERRESTRIA. 



Trachtlipodes Colimaces, Lamarck. Limacinea, in 

 part, Blainville. Gdocochlides, Latreille. Genus Helix y 

 Linnaeus. 



GENUS 1 . HELIX. Shell orbicular, subglobose, subconi- 

 cal, or depressed, umbilicate, thin, spiral, with the aper- 

 ture roundish or semilunar, its margin thickened, and 

 more or less reflexed, but incomplete behind. Helix, a 

 snail. Linnaeus. Lamarck. 



1. Helix aspersa. Shell subglobose, imperf orate, ru- 

 gose, and subreticulate, reddish-brown with four longi- 

 tudinal bands of blackish-brown, interrupted by yellowish 

 curved spots. Asp6rsus, sprinkled with dots. 



2. Helix arbustdrum. Shell subglobose, perforate, 

 faintly rugose, brown, marbled with brownish-yellow, and 

 having a longitudinal dark-brown band. Arbustum, a 

 copse or orchard. 



3. H6lix hortensis. Shell subglobose, imperf orate, 

 yellow, with five longitudinal brown bands, the mouth 

 with the margin white. H6rtus, a garden. 



A. H. horl&mis vulgdris. Vulgaris, common. 



B. H. hortensis maritima. Maritime!, living near the sea. 



C. H. hortensis aremcola. Arenicola, inhabiting sand. 



4. Helix caperdta. Shell moderately depressed, deeply 

 striate, of six convex turns, the last subcarinate, the um- 

 bilicus rather large, aperture semilunar with the margin 

 thin ; the colour yeUowish-grey, irregularly spotted or 

 banded with brown above, the base with interrupted 

 brown bands. Caper dtus, wrinkled like the horns of a 

 goat, caper. 



5. Helix hispida. Shell moderately depressed, very 

 thin, horny, pale yellowish-brown, covered with numerous 

 short glistening, yellowish-white hairs, ths last turn sub- 

 carinate, the keel paler, a rather narrow deep umbilicus, 

 aperture with the margin thin. Hispidus, bristly. 



6. Helix Tr6chulus. Shell conico-convex, of six well- 

 rounded turns, faintly striate, transversely ; the base con- 

 vex with a shallow, undefined umbilicus. Trdchulus, a 

 little "top wherewith children play." 



7. Helix lamelldta. Shell conico-convex, of six 



