﻿field 
  about 
  the 
  middle 
  of 
  May, 
  becoming 
  abundant 
  in 
  July, 
  and 
  contin- 
  

   uing 
  until 
  October. 
  Chittenden 
  suggests 
  that 
  there 
  may 
  be 
  two 
  broods 
  

  

  Fig. 
  17. 
  The 
  Garden 
  Flea-hopper, 
  Halticiis 
  uhleri: 
  a, 
  short-winged 
  female; 
  b, 
  long-winged 
  

   emale; 
  c, 
  male; 
  d, 
  head, 
  side 
  view, 
  showing 
  beak. 
  (Chittenden, 
  U. 
  S. 
  Dept. 
  of 
  Agriculture.) 
  

  

  in 
  a 
  season, 
  the 
  species 
  passing 
  the 
  winter 
  in 
  the 
  egg. 
  We 
  have 
  never 
  

   obtained 
  it 
  in 
  our 
  numerous 
  winter 
  collections, 
  and 
  this 
  surmise 
  is 
  

   probably 
  correct. 
  

  

  The 
  Du^kv 
  Leaf-bug. 
  

  

  Plagiognathus 
  obsciirus 
  Uhler. 
  

  

  Although 
  this 
  is 
  a 
  fairly 
  common 
  Illinois 
  species, 
  it 
  has 
  not 
  often 
  

   been 
  found 
  by 
  us 
  on 
  beets. 
  It 
  is 
  a 
  small, 
  funereal, 
  faded-black 
  insect, 
  

   shaped 
  like 
  the 
  very 
  abundant 
  tarnished 
  plant-bug 
  but 
  of 
  much 
  smaller 
  

   size. 
  It 
  is 
  generally 
  distributed 
  over 
  the 
  United 
  States 
  east 
  of 
  the 
  

   Rocky 
  Mountains, 
  and 
  is 
  recorded 
  from 
  a 
  considerable 
  variety 
  of 
  plants. 
  

   Its 
  time 
  distribution 
  in 
  our 
  collections 
  indicates 
  the 
  development 
  of 
  two 
  

   separate 
  broods 
  and 
  hibernation 
  in 
  the 
  egg. 
  Over 
  fifty 
  lots 
  have 
  been 
  

   collected 
  by 
  us, 
  and 
  all 
  occurred 
  either 
  between 
  June 
  14th 
  and 
  July 
  20th 
  

   or 
  between 
  August 
  14th 
  and 
  October 
  8th, 
  with 
  the 
  exception 
  of 
  a 
  single 
  

   collection 
  made 
  November 
  ist. 
  

  

  