PRESERVATION OF INSECTS. 271 



dead or dying trees, in the carcases of dead 

 animals, in all kinds of dung and rubbish, under 

 stones, in flour, in cellars, in sand and gravel pits, 

 at the roots of grass, in moss, in water, or flying 

 in the air. 



869. Of Orthoptera we have but few : earwigs 

 abound in the crevices of bark and palings, or any 

 shelter by day, and run every where by night ; 

 cockroaches and crickets frequent houses ; grass- 

 hoppers, the fields, particularly in the autumn. 



870. Of the Hemiptera, the Cimicites, Cicadites, 

 and Aphites, inhabit plants ; the Hydrometrites 

 run on the water ; and the Nepites and Notonec- 

 tites swim beneath its surface. 



871. In the Neuroptera all but the dragon-flies 

 settle on shrubs during the day, particularly in 

 the neighbourhood of water, and may be very 

 readily beaten into the clap-net : the noble dragon- 

 flies may be seen over ponds, hawking about for 

 their insect prey. 



872. The entomologist who has in his neigh- 

 bourhood different descriptions of soil and different 

 degrees of altitude, different kinds of cultivation, 

 or the absence of cultivation, as morasses, heaths, 

 commons, forests, should try each and all; he will 

 find that all these differences make corresponding 

 differences in the produce. 



873. Besides the perfect insects, in every 

 excursion the collector will be sure to meet with 

 numbers of larvae, particularly those of Lepidoptera 



