80 
Helix lactea and aspersa and pisana were commonly picked 
by children for food. 
At San Roque, within Spain, a slight search had detected 
the following in addition : 
Helix lactea. A lovely milk white variety, with a pale 
pink lip. 
Helix caperata. Mont. 
Limnaeus pereger. 
Physa fontinalis. 
Succinea putris. Pfeiffer. 
Melanopsis Dufourei. Fer. Very abundant in sluggish 
ditches. 
] Pisidium 
