66 HELICID®. 
They may not find favour just at first with some, but 
those who like periwinkles will not find zemora/is inferior. 
In France and Italy H. nemoralis, H. pisana, H. pomatia, 
H. aspersa and H. Jactea are sold in the markets 
ready cooked. I would, however, caution those 
experimenting on snails to ascertain what they have been 
feeding on, as on one occasion I fed on a batch of 
Hi. pisana sent from Tenby and found myself very 
uncomfortable. On enquiry I learnt that they had been 
gathered from the wild celery. Verd. sap. 
BAND-VARIATION IN HELIX NEMORALIS AND H.HORTENSIS. 
No philosophical plan of treating the numerous 
variations of these species has yet been propounded, and 
until such is the case it is deemed the wiser plan to 
include in the list only variations of size, form, texture, 
colour of lip and ground-colour. A convenient method 
or formula, however, exists by which band-variations may 
be readily and accurately recorded. As all conchologists 
know, the type form has five bands, each of which is 
constant in its position on the shell, three of them being 
always above, and two always below, the periphery. The 
variation is usually by suppression or by coalesence of one 
or more of these bands, or both. Numbering the bands 
for convenience, I, 2, 3, 4, 5, the uppermost being the 
first, and the lowermost the fifth band, the formula for 
