affecting the Corn,' Crops. 
503 
Repeated ploughings recommended to destroy the pupae ; but 
as the Caterpillars are conveyed away with the cornj that would be 
useless. 
The " Pale mottled willotv-moth'' is the parent of this Cater- 
pillar, and is abundant in hay-fields, &c. 
Caterpillar of a Saio-Jlg, found on wheat-cars amongst standing 
corn. 
Musca pumilionis, the larva very destructive to rye. 
The diseased sfems should be collected and burnt. One person 
could collect some thousands in a day. 
The same or an allied species attacked the wheat near Battle. 
The central shoot being destroyed^ lateral branches were tliiown 
out and a good crop was obtained. 
The September and October sown toheats only affected, and the 
red wheat nearly escaped. 
In 1812 the Society of Agriculture of the Seine was officially 
consulted by the Minister of the Interior, regarding the ravages 
in France occasioned by the larva; of Chlorops lineata. 
The larvce destroyed the central leaves and the plant itself. 
When the wheat begins to show the ear early in June, the 
female lays her eggs on the stems. 
The eggs hatch in a fortnight, and the maggot eats away below 
the base of the ear. 
It is transformed to a pupa towards the first superior knot. 
The Chlorops hatches in Septen^ber, and then lays her eggs on 
the rye and recently-sown corn. 
The infested corn is stunted and green, whilst the healthy plants 
are ripe : the ears are not liberated, and the grains are diminutive 
or quite abortive. 
In 1840 the loss was estimated at one- seventieth part of the 
harvest, besides the number of young plants that had been de- 
stroyed at an earlier period. 
Chlorops Herpinii attacks the ears of barley : from six to ten 
being found in each ; and by destroying the flowers they render 
the ears sterile. 
Musca Frit, inhabits the husks of the barley, and destroys one- 
tenth of the grain. 
LinncBus calculated the annual loss in Sweden at one hundred 
thousand pounds sterling. 
Chlorops tcBuiopus attacked some transplanted wheat. 
The larvce feed sirigly from the first joint to the base of the 
embryo ear, or higher. 
I n August the flies hatched. 
They attached barley also at an earlier period. 
It attacked also some naked barley from Nepaul.- 
A species of Chlorops occasionally swarms in dwelling-houses. 
