RAVAGES OF CATERPILLARS. 



217 



During the three last summers, we also remarked 

 that the alders {Ahms glutinosa) along the banks of 

 the Ravensbourne, in Kent, were extensively stripped 

 of their leaves by a saw-fly caterpillar, very like the 

 preceding, but of a larger size.*" It appears to be 

 the same as one figured by Reaumurf (^Selcmdria 

 Mni ? Stephens). 



«; Nematus caprcce, on the osier ; b, Selandriu nhii ? on the alder. 



Another slimy caterpillar of a saw-fly, allied to 

 that of the cherry ( Ten^/irec/o Cerasi), ii called the 

 slug worm in North America, where it has increased 



*.T. R. 



VOL. VI. 



t R.aumur, vol. v, pi. 11 . fi . 1, 2. 

 19 



