502 LOCAL DISTRIBUTION OF INSECTS. 
abound most in the former: the more minute ones may 
be sought for with success amongst the duckweed that 
covers a pool. I do not recollect finding any insect in 
waters absolutely salt?; but brackish waters produce 
peculiar species: in these only, Hydraena marina occurs ; 
and many of those large-eyed Cimicide (Salda F., Acan- 
thia Schrank), as S. saltatoria, littoralis, and Sostere 
occur in places where salt water has been. Latreille 
observes, that the genus Pimelia is to be met with only 
where the soil is impregnated with saline particles, or 
where the species of the genus Salsola abound”. 
Heaths, though they do not afford numerous insects, 
have their rarities. Cicindela sylvatica, Carabus nitens 
and arvensis, frequent them, and are not elsewhere to be 
‘seen. Curculio nebulosus is also to be found on them, in 
places where the turf has been peeled; and some scarce 
Lepidoptera. In their vicinity, in sunny sandy banks, 
some of the rarer Ammophile and Pompili may be taken ; 
and it is here only that I have ever met with Panurgus* 
Latr. Meadows and pastures are not to be neglected. 
Early in the year, when they are yellow with the blos- 
soms of Ranunculus bulbosus, Leontodon Taraxacum, &c., 
many minute beetles, and not a few Hymenoptera and 
Diptera, frequent them. Morasses also have their pecu- 
liar insects. In these you will meet with some of the 
scarcer Eupodina; as Chlenia holosericea and nigri- 
cornis, Blethisus multipunctatus, various Bembidia, &c. 
In this kind of district in the Isle of Ely Aphodius pla- 
* A species of Gyrinus (G. Viola aquatica), described by Modeer 
(Linn. Syst. Nat. Ed. Gmel. i. 1612. n. 9.), is said to inhabit salt 
water. . 
> Géograph. &c. 6. © Apis.*.a, Mon. Ap. Angl. ii. 178—. 
