158 PNEUMONOBRANCHIATA. 



i. HELIOMANES Ferussac. 



Shell subglobose, perforated or umbilicated, white or 

 reddish, varied with bands ; peristome edged, not 

 spread; periostraca thirty 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. Mutter, Term. 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. Mutter, 25. 



Teba cingenda. Leach, Mollusc, p. 92. 



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



rhodostoma. Drop. p. 86. t. 5. f, 13 15. 



strigata var. Dillwyn, 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. 



