68 GASTEROPODA. HELICIDZ. 
Tenby, near the town; on the slope of the hill descending to 
the town of St. Ives, Cornwall; and above Whitsand Bay, in 
the same county. 
In the young state, during very hot weather, it adheres to the 
stalks of junci and grasses, forming a marginal epiphragm of 
calcareous matter, which fills up the space between the shell 
and the stalk. This fact was observed by my friend the Rev. 
J. Bulwer, who communicated to me living specimens in that 
state. 
2. TERA VIRGATA. 
T. testa alba, fusco 1-6-fasciata ; peritremate sordidé rufo. 
Helix virgata, Mont. Test. Brit. ii. 415 ; Supp. pl. 24. fig. 1; 
M. and R. Trans. Linn. Soc. viti. 195; Flem. Edinb. Encyel. 
vii. 79. 
Helix variabilis, Drap. Hist. des Moll. 84. pl. 5. figs. 11, 12. 
Helix zonaria, var., Penn. Brit. Zool. iv. 137. t. 85. fig. 133. a. 
Helix zonaria, Donov. Brit. Shells, pl. 65. 
Helix Pisana, Dill. Desc. Cat. 911. 
f. alba aut albida, immaculata. 
y. perfusca, linea longitudinali alba. 
Habitat in arenosis, plerumque maritimis. 
Shell white, striated transversely, with from one to six fuscous 
bands. Peritreme dirty rufous. 
Animal pale cinereous ; upper part of the same colour, or of 
a neutral tint. Collar blackish, inclining to violet. Tentacula 
bluish grey. Eyes black, inserted at the superior apex of the 
tentacula. 
Teba virgata is subject to all such varieties as can arise from 
the want or confluence of any of its bands. It is found in the 
greatest abundance on most of the sandy shores of Britain, and 
sometimes occurs in inland situations, where the soil is sandy. 
Var. (§. is found around Plymouth, and y. is not uncommon 
amongst the common banded varieties. 
3. Trespa CANTIANA. 
T. testa semipellucida, anfractibus transversim striolatis, peri- 
tremate pallide brunneo ; parte incrassata alba. 
