60 GASTEROPODA. HELICID. 
Linnean artificial genus Helix, are useless when applied to V7- 
trina, all the known species of which are more or less elliptic, 
pellucid, and glaucous green. 
Genus 24. Heurx. 
Helix, Auctorum. 
Testa subsolida, subglobosa, imeequilateralis. Peritrema 
tenue, reflexum, posticé nullum. Tentacula superiora elongata, 
ad apicem globosa ; inferiora brevia. 
Shell rather solid, subglobose, equilateral. Peritreme thin, 
reflexed, wanting behind. Umbilicus none. Upper tentacula 
elongated ; under ones moderate in length. 
I Herix AsPersa.” PY UEP tiee 122) 
H. testa rugulosa, lutescente, fuscé aut fulva, longitudinaliter 
fasciata ; peritremate albo. 
Helix aspersa, Mill. Verm. Hist. 253; Mont. Test. Brit. 
407; Flem. Edinb. Encycl. vu. 79; Drap. Hist. des Moll. 
89. pl. 5. fig. 23; Féruss. Hist. des Moll. pl. 18, 19, & 24. 
fig. 3. 
Helix hortensis, Penn. Brit. Zool. iv. 136. t. 74. fig. 129; M. 
and R. Trans. Linn. Soe. vii. 208 ; Turt. Conch. Dict. 60. 
Helix lucorum, Pult. Cat. Dorset. 48. 
Helix grisea, Dill. Dese. Cat. 943. 
Habitat im Britannize nemoribus, campis, et hortis, passim. 
Shell somewhat roughish or wrinkled, lutescent, fuscous, or 
orange-coloured ; whorls longitudinally banded with deep brown 
or black. Peritreme white. 
Bands generally five in number, and more or less mottled or 
interrupted with the prevalent colour of the shell. It is subject 
to all the varieties that can arise from the loss, or confluence of 
from one to all of these bands. 
Helix aspersa is by far the most common species of this 
family that occurs in Britain. It inhabits gardens, fields and 
woods, everywhere doing incredible mischief to the agriculturist 
and gardener. 
The reversed variety is extremely rare, and the open turrited 
still more so. I am obliged to Mr. Johns, of Plymouth, for 
