UNIVALVE MOLLUSCA. 425 
Besides Helix pomatia, according to Moquin-Tandon, they eat in 
the north of France Helix sylvatica and H. nemoralis ; at Montpellier, 
as we have already said, WH. aspersa and H. rhodostoma ; at Avignon, 
also, these, along with A. vermiculata, are favourites. In Provence, 
‘Fig. 196.—Helix Mackenzii Fig. 197.—Helix undulata Fig. 198.—Helix translucida 
(Adams), (Ferussac). (Linnzeus). 
Helex pisana, with Hf. aspersa and melastoma, are preferred, At Boni- 
facio, Helix aspersa, H. vermiculata, and, more rarely, H. rhodostoma ; 
and in other localities the smaller species and young individuals of 
the larger kinds are employed for feeding poultry. 
Figs. 199 and 200.—Helix Waltoni (Reeve), 
Certain species are also employed for feeding ducks. Thus, in 
the neighbourhood of Montpellier, ducks are fed upon Helix variabilis 
and 4. rhodostoma. Some fishes, especially the young salmon, are 
very partial to the flesh of snails. 
This important genus is very numerous in species, which are 
distributed in groups according to the form of the shell; that is, 
