40 COLLECTING AND PRESERVING INSECTS. 



apartments, or in moist dark places under sticks, stones, among 

 fallen leaves, or under bark of trees, while some occur in great 

 profusion about manure heaps and hot-beds in early spring. 

 They should be collected in a mixture of alcohol and glycerine, 

 equal parts, or alcohol alone. Collections from the western 

 and Pacific states are very desirable. 



Nothrus Mite. 



ARACHNIDA. 



SPIDERS, SCORPIONS AND MITES. 



In studying spiders, of which there are in New England 

 Pi 53 alone, according to Mr. Emerton, over 



two hundred species, the number and rela- 

 tive situation of the eyes, and the relative 

 length of the different pairs of legs, should 

 be noticed. Their webs and the manner of 

 constructing them ; their habitats, whether 

 spreading their webs upon or in the 

 ground, or in trees, or on herbage ; or 

 whether the species is aquatic, or erratic, 

 and pursue their prey without building 



webs to entrap them, should be observed. So, also, how they 



deposit their eggs, and the form Fig. 54. 



and appearance of the silken 



nidus, and whether the female 



bears her eggs about her, and 



how this is done, whether hold- 

 ing on to the egg-sac by her 



fore or hind legs, should all be 



carefully noticed. Care must be 



taken not to mistake the young 



or full-grown, mature species, 



and describe them as such. 



Spiders can be reared in boxes 



as insects. The only way to 



preserve them is to throw them 



into alcohol ; when pinned, they 



shrivel up and lose their colors, which keep well in spirits. 

 The colors of spiders vary much at different seasons of the 



Cattle Tick. 



