53 



tinction is trifling, as well as lose many others, 

 the distinction of which can only be perceived 

 by a practised eye, assisted by a lens. Nor 

 should the Tyro while collecting, make a selec- 

 tion of species, nor consider the most beau- 

 tiful as alone valuable, for the most insignificant 

 insect in appearance, may, perhaps, prove the 

 very key stone of a natural system ! 



From the circumstance too, that many insects 

 are only abundant at distant and uncertain periods, 

 varying from three to thirty years, or more, it is 

 advisable for the collector, however common an 

 insect may be, to take as many as possible at once, 

 and not to run the risk of losing the species, by 

 neglecting to take them at the proper time. 

 Young collectors are also advised, when they 

 are so fortunate as to meet with rare, or local 

 insects in abundance, not to fail availing them- 

 selves of the opportunity to take more than 

 they may require, in order not only to oblige 

 their friends by the gift of specimens which 

 they may not possess, but also to exchange 

 their duplicates for other species which may 



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