﻿THE 
  INSECTS 
  OF 
  NEW 
  JERSEY. 
  25 
  

  

  importance 
  of 
  certain 
  of 
  these 
  flies 
  to 
  the 
  human 
  race 
  has 
  only 
  

   come 
  to 
  be 
  appreciated 
  in 
  very 
  recent 
  years. 
  

  

  An 
  offshoot 
  from 
  the 
  Diptera, 
  which 
  has 
  become 
  partially 
  

   parasitic, 
  we 
  find 
  in 
  the 
  fleas, 
  for 
  which 
  the 
  ordinal 
  term 
  Sipho- 
  

   naptcra 
  is 
  used. 
  They 
  are 
  wingless, 
  laterally 
  compressed, 
  and 
  

   live 
  as 
  adults 
  on 
  warm-blooded, 
  hair 
  or 
  fur-coated 
  animals. 
  

  

  In 
  a 
  graphic 
  form 
  the 
  scheme 
  of 
  classification 
  is 
  shown 
  on 
  

   the 
  accompanying 
  diagram. 
  (See 
  p. 
  26.) 
  

  

  For 
  convenience 
  of 
  cataloguing, 
  the 
  sec{uence 
  of 
  the 
  orders 
  is 
  

   modified 
  so 
  that 
  all 
  the 
  neuropterous 
  forms 
  are 
  grouped 
  together 
  

   before 
  the 
  Rhyngofa^ 
  irrespective 
  of 
  the 
  series 
  to 
  which 
  they 
  

   belong 
  in 
  point 
  of 
  development. 
  

  

  