LOCAL DISTRIBUTION OF INSECTS. 503 ; 
giatus has been taken, and that scarce and. beautiful but- 
terfly Lycena Virgauree. Where land is cultivated the 
Entomologist as well as the farmer may expect a harvest. 
Insects in general are fond of perching on the summit of 
a blade of grass or corn; and many minute ones may be 
taken coursing about in the ears of the latter: some to de- 
vour the fungilli that infest the grain, as Phalacrus corrus- 
cus in Reticularia Segetum ; others to attack the grain itself, 
as Cecidomyia Tritict ; others to destroy these destroyers, 
as three little parasites belonging to the Ichnewmones mi- 
nutz L.*. But I have already mentioned most of those in- 
sects that are to be expected in such situations: I shall 
therefore only further observe, that upon barley particularly 
you will meet with the species of Latreille’s genus Cephus. 
With respect to soils, those that are light appear to be 
most prolific in insects.) Warm sandy banks are fre- 
quented by Cicindela campestris, Opatrum sabulosum, He- 
lops quisquilius, &c.: in them (when of a southern aspect) 
Ammophile, Pompili, and numerous Hymenoptera nidifi- 
cate. Chalk also attracts various insects. Latreille ob- 
serves, that the Licini, Papilio Cleopatra, several species 
of Dasytes, and some Lamia, delight in this kind of soil*: 
—in my own neighbourhood I have observed Lycena Co- 
rydon principally in chalk-pits. One of these pits, under 
a wood in an adjoining parish, has produced me several 
valuable insects. Here I took Apion ebeninum, Orobitis 
globosus, a new species of Evesthetus Grav., several of the 
rarer Pselaphide and Choleve, and Chetophora cretifera 
before noticed*. I do not mean, however, that all these 
* Linn. Trans. iv. 30—. v. 96—. f. iv. > Vor. [. Lerten VI. 
° Géograph, &c. 6. 4 Vou. I. p. 258. 
