LAND SNAILS. 
123 
Helix pisana — {the Banded Snail) (PL VIII., 
fig. 66).—The specific name, “ Pisana,” was 
given to this species from its having been first 
found at Pisa. 
This species is the most beautiful of our snails. 
The shell is solid, moderately glossy, about afourth 
of an inch in diameter, and half an inch high, 
with five whorls of yellowish-white ornamented 
with numerous brown spiral bands, interrupted by 
short oblique streaks of the same colour, giving 
the upper surface a speckled appearance. 
The aperture is rounded, rose-coloured in the 
interior, with an internal rib : the umbilicus is 
narrow, nearly closed by the reflected margin of 
the lip. The dental formula is 3 5,1<3 -4^ 
* 12 0 
In Great Britain it is only found on the coast¬ 
line. On the sand-banks between Tenby and Kilter 
Point it is very numerous. Another locality is 
St. Ives, where in the hot weather the snails 
have been observed buried in the sand at the 
roots of Oarex arenaria to the depth of some 
inches. It also occurs abundantly near Dublin, 
and in Jersey. On the Continent it is confined 
to the southern countries, but it is found at Con¬ 
stantinople, with such western species as Id. Car - 
tusiana , If. virgata , and II. ericetorum. 
Helix virgata —{the Zoned Snail ) (PI. VIII., 
fig. 80).—This snail, with H. caperata , H. ericeto¬ 
rum, and Bulimus acutus, affects the dry stunted 
