654 ON THE STUDY OF ENTOMOLOGY. 
they swarm ; on the wing they darkened the air, and produced a 
sound like that of distant drums ; when they were feeding, the noise 
of their jaws might be mistaken for the sawing of timber. The 
Anomala Horticola attacks and devours the leaves of the raspberry, 
and is often found exceedingly troublesome, particularly in some 
parts of Nottinghamshire, where the gardens are bordered by the 
forest. 
Family XXXI....CET0NiADiE....2 Genera. 
1. Trichius, 2. Cetonia. 
The Green Rose Chafer (Cetonia aurata) is one of our prettiest 
native insects, and may be found reposing in the rose blossoms, or 
flying about the trees, making a considerable humming noise, about 
the end of May, or the beginning of June ; the female burrows into 
light soft ground, and deposits her eggs about the middle of June ; 
the grub feeds on the roots of trees, when about to enter into the pu- 
poe state, they prepare themselves a cocoon composed of earth, pieces 
of rotten wood, and any substances within reach, which they fasten 
together with a glutinous secretion ; the length of its life in the per- 
fect state has not been ascertained. Rdsel informs us, he fed one 
with fruit and moist white bread for three years. 
RUSTICUS. 
(To be continued.) 
