158 PNEUMONOBRANCHIATA. 



t. Heliomanes Ferussac. 



Shell subglobose, perforated or umbilicated, white or 

 reddish, varied with bands ; peristome edged, not 

 spread; periostraca thin, bald ; epiphragm membra- 

 naceous. 



41. 23. Helix pisana. Banded Snail, (t. 4. f- 30.) 

 Shell subglobose, with the larger volution rather 

 flat at top, marked with numerous brown and 

 yellowish often interrupted bands; the mouth 

 rounded lunate ; throat mostly rose-colour. 



Helix pisana. Muller, Verm. 60. ; Lam. H. vi. 82. 



— — petholata. Oliv. Ad. 178. 



cingenda. Montagu, p. 418. t. 24. f. 4. ; 



Linn. Trans, viii. 195. t. 5. f. 6., xiii. 333. 



Helix albina. Muller, 25. 



Teba cingenda. Leach, Mollusc, p. 92. 



Helix zonaria. Penn. B. Z. iv. 137. t. 5. f. 133. 



rhodostoma. Drap. p. 86. t. 5. f, 13 — 15. 



strigata var. Dillwgn, p. 911. 



Inhab. dry sandy plains near the sea. 



Animal yellowish white ; neck purplish ; tentacles 

 long, club-shaped. 



Shell about half an inch in diameter, and not so 

 much high, with the volutions a little flattened at top, 

 slightly striate; colour whitish or yellowish, rarely 

 without coloured bands, but mostly with seven or 

 eight brown circular lines on the lower volution, 

 often broken into dots ; the tip black ; these bands are 

 very variable ; aperture longer than wide, with the 

 margin thin and reflected at the pillar, where it half 

 closes the narrow but deep umbilicus ; the region of 

 the mouth is generally of a more or less intense rose- 

 colour. 



