104 SYSTEMS. 



B. WINGLESS INSECTS. 



[N.B. Bugs, timber-lice, ants, white ants, and 

 some female moths, do not rank in this division, though 

 they have no wings. We cannot make nature bend 

 to our systems.] 



Divided into 



1. Those with the hind legs formed for leaping. 

 Bed-fleas, Bird-fleas, Dog-fleas ('). 

 . 2. Those with tail bristles formed for leaping. 

 Spring-tails ( 2 ). 



3. Those with no members formed for leaping. 

 Head-lice, Body-lice, Crab-lice, Sheep-ticks, Dog-ticks, 

 ^Bird-lice. 



The drawers of a cabinet may be ticketted either 

 with the above letters and numbers, or with the Latin 

 names in the notes, and the insects collected may be 

 arranged accordingly. 



In order to class and name individual species, there 

 is little aid at present, except through the medium of 

 very expensive books. This will be partly obviated 

 by my little ^ CONSPECTUS OF BRITISH BUTTERFLIES 

 AND MOTHS," and I hope soon to be able to get 

 through the rest of our British Insects in the same 

 way, progress having been already made with the 

 " CONSPECTUS OF Two WINGED FLIES," according to 

 Meigen, Fallen, and other high Continental authori- 

 ties ; and the " CONSPECTUS OF SPIDERS AND MITES," 

 according to Lister, Clerck, and Walckenaer, which 

 will be accompanied by " THE ALPHABET OF SPIDERS 

 AND MITES." 



(1) In Latin, Thysanura, (LEACH). 



(2) In Latin, Anoplura, (LEACH). 



