236 OBSERVATIONS ON INSECTS. 



boggy soil, they were roused to activity, and the eye 

 caught them directly. 



SINONENDRON CYLINDRICUM.* 



April 15th, 1826. TO-DAY we found an old de- 

 cayed pollard ash completely bored through and 

 through by the Sinonendron cylindricum. Immense 

 quantities, both of the perfect insect and their 

 larvae, were found buried in the wood. It is sin- 

 gular that this species should occur in such profusion 

 in this instance, being one which I have not before 

 observed in this neighbourhood. 



COCKCHAFFER. 



THE larger cockchaffer -j- is so uncommon in this 

 neighbourhood, that during the last ten years I 

 have hardly noticed as many specimens. I was once 

 inclined to attribute this to the fact of there being 

 an extensive rookery close by, the individuals of 

 which must greatly assist in keeping down these 

 destructive insects, when in the grub or larva state. 

 It is observable, however, that the smaller cock- 

 chaffer, J or midsummer dor, as it is more commonly 

 called with us, abounds ; and one might have sup- 

 posed that this species, which the rook is equally 

 fond of, would have been kept down as well. The 



* Steph. Man. p. 155. 



t Melolontha vulgaris, Stephens's Man. p. 168. 



% Rhisotrogus solstitialis, Id. p. 168. 



