WOODWARD : FEEDING-TRACKS OF GASTROPODS. 66 



The key to these trails, however, is to be found in the figure of the 

 feeding-track of Ifelix aspersa given in Taylor's " Monograph of the 

 Land and Freshwater Mollusca of the British Isles," vol. i (1899), 



p. 2f)0, in which the individual licks are distinct and evidently (juite 

 similar to those left by the slug on the photograph. This figure, 

 kindly lent me by Mr. Taylor, is here reproduced (Fig. 4). 



Fig. 4. 



]^o further observations on this subject appear to have been made, 

 though it is undoubtedly one of great interest. 



vol.. VII. — MAUCH, 190tu 



