26 CORN AND GRASS. 
The duration of the attack of the beetles depends very much on the 
weather. In 1841, when they were specially watched by Curtis, he 
noted :—‘‘ This spring, after feasting on the Strawberry-blossoms, they 
proceeded to a bed of Turnips in flower, which was reserved for seed, 
and they are now making a repast of the Roses; thus they migrate 
from one set of flowers to another until September if the seasons be 
fine, but if wet and cold weather sets in they become paralyzed and 
die.”’ 
Measures of prevention and remedy are very similar to those for 
other chafer infestation mentioned at page 32. 
PHYLLOPERTHA HORTICOLA, Garden or Rose Chafer, and maggot, natural size; and 
magnified with wings expanded. 
The Rose Chafer, or Garden Chafer, figured above, has for some 
years back been one of our especially bad pests, causing very serious 
injury to grass-land, and reports of it are again given to show the wide 
extent of its continued ravages. In Norfolk, on the east of England, 
and in Galway, on the west of Ireland, it has been doing its mis- 
chievous works; and on the Welsh mountains near Barmouth, as 
amongst the gardens of Surrey and other localities in beetle state, and 
at grass-roots in various localities in grub state, its obnoxious presence 
has been remarkable. 
The beetle is of the shape and size figured above (lower figure or 
natural size); the head and fore body bright green; the wing-cases 
bright tawny. The grubs are exceedingly like those of the Cockchafer, 
only smaller. They are white or ochreous, with chestnut or ochrey- 
coloured heads, and jaws darker at the tips; when at rest they lie with 
their bodies curved, but when disturbed they straighten themselves 
out, and are very active; and lately I have found, by timing the pro- 
gress with the help of a foot-rule and the second-hand of my watch, 
they could travel from five to six inches in about half a minute. 
When full-fed they turn to the chrysalis-state in cells some way 
beneath the surface of the earth. 
On the 8rd of June information was sent me by Mr. P. H. Foulkes, 
from the University Extension College, Reading, of beetles, which 
