RAVAGES OF CATERPILLARS. 



217 



During the three last summers, we also remarked 

 that the alders {Almis glutinosa) along the banks of 

 the Kavensbourne, 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 Reaumurt {Selandria 

 Alni? Stephens). 



a, Nematus caprece, on the osier ; h, Selandria alni ? on the alder. 



Another slimy caterpillar of a saw-fly, allied to 

 that of the cherry {Tenthredo Cerasi), is called the 

 slug worm in North America, where it has increased 



* J. R. t Reaumur vol. v., pi. 11, fig 1, 2. 



O 



