JOURNAL OF CONCHOLOGY. 349 



large water-sedges above a marshy piece of ground near a large 

 stream. What becomes of the shells during winter is rather a 

 mystery, for all the plants die off, and the whole place is 

 generally about two feet under water. The shells sit very much 

 exposed on all parts of the plants and do not appear to move 

 about very much. As regards their existence during the 

 winter, under the conditions described by Mr. Cambridge, I 

 think it highly probable that they creep into the stems of the 

 bulrushes, &c., for shelter, and hibernate there. Mr. Cambridge 

 informs me that he has made no record of his important dis- 

 covery, and requests me to do so; a task which affords me 

 great pleasure, knowing that it will be of deep interest to many 

 brother conchologists. 

 December i8i/i, i8go. 



NOTES ON THE FOOD OF SOME OF 

 THE BRITISH MOLLUSKS. 



By W. a. gain, Tuxford, Newark, Notts. 



(Read before the Conchological Society, Oct. 8th, 1890). 



The following tables show the results of several years of obser- 

 vation. The colonies of each species varied in number, but 

 were generally composed of from half a dozen to a dozen 

 individuals; in the case oi Limax /cs vis the number often fell 

 below this, and Helix cantiana and H. virgata, being shy 

 feeders in confinement, necessitated a much larger number, 

 fifty and occasionally more being often fed together. 



Each colony occupied a flower-pot, partly filled with earth, 

 which was moistened from time to time, the pot being covered 

 with perforated zinc kept in place by a weight, 



