12 
First Report on Economic Zoology. 
Treatment. 
Soot and lime have been found of some benefit. The chief thing 
to do, however, is to treat the land with gas-lime during the autumn 
and winter to kill the hibernating insects, then in the puparium 
stage in the soil, and so prevent their doing damage another year. 
On the Continent some good is said to have been done by 
applying superphosphate of lime as a preventative. 
Treatment with gas-lime is the only certain way of lessening 
these pests on a large scale. 
The three small caterpillars were probably non-injurious. 
Chafer Larvae. 
(. Mclolontlvidcc .) 
Several enquiries have been made at the Board of Agriculture 
during the past summer concerning Chafer larvae, the so-called 
White Grubs. From Ferry side, South Wales, the grubs of the 
Garden Chafer or Cock-y-bonddu ( Phyllopertha horticola , L.) were sent 
on June 20th. They were reported as Antler Moth caterpillars 
( Chctrceas graminis , L.). The Cock-y-bonddu is apparently the common 
Welsh chafer, for nearly all the larvae examined have proved to be 
this species; the attack seems to have been fairly general in Wales 
this year. The Summer Chafer (. Rhizotrogus solslitialis, L.) has also 
done much damage in many parts of Great Britain. From Launceston 
they were especially reported as damaging pasture land, also from 
Wye. 
By far the most abundant species, however, has been the Cock- 
chafer ( Melolontha vulgaris, Fabr.), which has occurred this summer 
in large numbers in the following localities : Wetlierby, York, 
Chester, Lytliam, Southwell, Pewsey, Boydon, Limpsfield, Croydon, 
Tooting, Highgate, St. Leonards, Catford and Wye. 
The brood appeared from the first to the third week in J une. The 
Summer Chafer {II. solstitialis) has occurred as adults at Wye, the 
brood occurring from the third week in July to the end of August. 
In districts where these broods are recorded we shall now know 
when to expect the next brood of beetles and so be prepared to take 
steps to collect them wholesale as soon as they appear. In this way 
only can any real good be done in districts where these Chafer larvae 
are harmful. Full information regarding these pests is given in 
the revised leaflet No. 25 of the Board. 
