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  730 
  KEPORT 
  UNITED 
  STATES 
  GEOLOGICAL 
  SURVEY. 
  

  

  eyes. 
  Auteunse 
  and 
  head 
  in 
  front 
  yellowish 
  ; 
  upper 
  lip 
  (labrum) 
  lilack 
  ; 
  both 
  pairs 
  of 
  

   palpi 
  reddish-brown. 
  Prothoras 
  yellow, 
  especially 
  on 
  the 
  ninder 
  edge, 
  and 
  tinged 
  withj 
  j 
  

   brown 
  on 
  the 
  sides 
  and 
  in 
  the 
  middle. 
  Wing-covers 
  black, 
  each 
  with 
  a 
  broad 
  yellow! 
  

   longitudinal 
  stripe 
  one-half 
  as 
  wide 
  as 
  the 
  wing-covers. 
  Body 
  beneath 
  black. 
  Legs 
  

   yellowish, 
  tinged 
  with 
  brown 
  ou 
  the 
  hind 
  femora, 
  which 
  are 
  much 
  swollen, 
  and 
  be- 
  

   come 
  paler 
  toward 
  the 
  tip. 
  Length, 
  0.18 
  inch, 
  or 
  nearly 
  two 
  lines. 
  The 
  species 
  has 
  

   been 
  identified 
  by 
  Dr. 
  Horn. 
  

  

  It 
  

  

  The 
  Theee-Lined 
  Potato-Beetle, 
  Lema 
  trilineata, 
  (Olivier. 
  Plate 
  LXVI, 
  Figs. 
  4, 
  

   5.) 
  — 
  Thick-bodied 
  grubs, 
  much 
  smaller 
  than 
  those 
  of 
  the 
  Colorado 
  beetles, 
  feeding 
  on 
  

   the 
  leaves 
  and 
  disguising 
  themselves 
  with 
  their 
  own 
  excrement, 
  becoming 
  black 
  beetles 
  ^ 
  

   striped 
  with 
  yellow, 
  and 
  with 
  a 
  reddish 
  head 
  and 
  prothoras. 
  » 
  j 
  

  

  This 
  beetle 
  ueed 
  not 
  be 
  confounded 
  with 
  the 
  Colorado 
  beetle, 
  as 
  it 
  is 
  l 
  

   about 
  half 
  the 
  size 
  of 
  the 
  latter, 
  and 
  is 
  only 
  occasionally 
  destructive 
  in 
  

   the 
  Eastern 
  States, 
  especially 
  New 
  England. 
  The 
  beetle 
  is 
  black, 
  striped 
  

   with 
  yellow, 
  with 
  a 
  reddish 
  head 
  and 
  prothorax. 
  ' 
  The 
  grub 
  or 
  larva 
  is 
  

   a 
  soft-bodied, 
  thick 
  grub, 
  but 
  slenderer 
  than 
  that 
  of 
  DorypJiora. 
  It 
  ■ 
  

   conceals 
  itself 
  by 
  covering 
  its 
  body 
  with 
  accumulations 
  of 
  its 
  own 
  ex- 
  

   crement. 
  It 
  matures 
  in 
  two 
  weeks, 
  and 
  transforms 
  in 
  the 
  ground, 
  the 
  '■ 
  

   beetle 
  appearing 
  about 
  the 
  1st 
  of 
  August. 
  Hand-picking 
  in 
  the 
  early 
  i 
  

   part 
  of 
  July 
  is 
  a 
  sufficient 
  remedy. 
  ' 
  

  

  Blisterlstg 
  Beetles, 
  Epicanfa 
  drierea 
  Fabrieins 
  (Plate 
  LXVI, 
  Fig. 
  6) 
  ; 
  E. 
  macrcihasis 
  

   ?Hi(rl»a 
  LeConte; 
  ctirata 
  Fabricius 
  (Fig. 
  7); 
  ^./a&ncu 
  LeConte 
  (Fig. 
  8). 
  — 
  Long, 
  slen- 
  

   der, 
  gray, 
  striped 
  or 
  spotted, 
  or 
  black 
  beetles, 
  with 
  a 
  prominent 
  head, 
  feeding 
  on 
  the 
  

   leaves, 
  and 
  sometimes 
  even 
  more 
  destructive 
  than 
  the 
  Coloratlo 
  beetle. 
  

  

  These 
  beetles 
  are 
  allied 
  to 
  the 
  Spanish 
  fly, 
  and, 
  like 
  that 
  insect, 
  all 
  

   secrete 
  the 
  blistering 
  substance 
  called 
  " 
  cantharadine." 
  , 
  

  

  The 
  gray 
  blistering 
  beetles 
  (Plate 
  LXYI, 
  Fig. 
  6) 
  in 
  Massachusetts 
  , 
  

   appear, 
  according 
  to 
  Harris, 
  about 
  the 
  20th 
  of 
  June, 
  and 
  sometimes 
  do 
  a 
  ^ 
  

   great 
  deal 
  of 
  mischief. 
  In 
  the 
  night-time 
  and 
  in 
  rainy 
  weather 
  they 
  leave 
  < 
  

   the 
  plants 
  and 
  burrow 
  at 
  the 
  roots 
  for 
  shelter, 
  and 
  eat 
  in 
  the 
  morning 
  ; 
  

   and 
  evening. 
  

  

  Common 
  as 
  these 
  insects 
  are 
  in 
  the 
  beetle 
  state, 
  the 
  larva 
  of 
  some 
  of 
  

   our 
  native 
  species 
  have 
  not 
  yet 
  been 
  discovered, 
  and 
  the 
  only 
  informa- 
  

   tion 
  available 
  to 
  me 
  is 
  a 
  brief 
  account 
  of 
  the 
  young 
  of 
  the 
  European 
  

   Spanish 
  fly 
  Lytta 
  vesicatoria 
  in 
  Westwood's 
  Modern 
  Classification 
  of 
  

   Insects, 
  where 
  it 
  is 
  stated 
  that 
  the 
  larvae 
  live 
  underground, 
  feeding 
  upon 
  

   the 
  roots 
  of 
  vegetables. 
  " 
  They 
  have 
  the 
  body 
  soft, 
  and 
  of 
  a 
  yellow- 
  

   ish-white, 
  composed 
  of 
  thirteen 
  segments, 
  with 
  two 
  short 
  filiform 
  an- 
  

   tennae, 
  and 
  six 
  short, 
  scaly 
  feet." 
  ] 
  

  

  While 
  the 
  gray 
  blistering 
  beetle 
  is 
  common 
  northwards, 
  the 
  black 
  n 
  

   species, 
  U. 
  pensylvanica, 
  is 
  equally 
  or 
  more 
  so, 
  while 
  E. 
  cinerea 
  (Forster) 
  

   (Plate 
  LXVI, 
  Fig. 
  8,) 
  is 
  more 
  common 
  southward, 
  and 
  E. 
  vittaia 
  (Plate 
  

   LXVI, 
  Fig. 
  9) 
  is 
  very 
  destructive 
  in 
  potato-fields 
  in 
  the 
  Middle, 
  Western, 
  

   and 
  Southern 
  States. 
  \ 
  

  

  Epicauta 
  pennsylvanica 
  is 
  j)erhaps 
  our 
  commonest 
  species 
  northward, 
  and 
  is 
  totally 
  

   black, 
  and 
  slightly 
  smaller 
  than 
  E. 
  cinerea 
  ; 
  it 
  is 
  black, 
  but 
  ash-colored 
  on 
  the 
  head 
  

   and 
  prothorax 
  and 
  on 
  the 
  under 
  side 
  of 
  the 
  body. 
  It 
  occurs 
  as 
  far 
  west 
  as 
  Kansas. 
  

   (E. 
  vittata 
  is 
  longer 
  and 
  slenderer 
  than 
  the 
  others 
  named, 
  and 
  is 
  clay-yellow, 
  with 
  sis 
  

   black 
  longitudinal 
  stripes.) 
  

  

  Macrohasis 
  muria 
  is 
  found 
  west 
  as 
  far 
  as 
  Northern 
  New 
  Mexico, 
  and 
  

   is 
  to 
  be 
  looked 
  for 
  in 
  Colorado 
  and 
  Wyoming. 
  

  

  The 
  following 
  is 
  Fay's 
  description 
  : 
  " 
  Lake 
  Superior, 
  two 
  males. 
  

   Easily 
  distinguished 
  by 
  its 
  more 
  sparse 
  pubescence; 
  the 
  thorax 
  is 
  

   shorter, 
  more 
  convex, 
  and 
  more 
  narrowed 
  anteriorly, 
  and 
  the 
  upper 
  sur- 
  

   face 
  is 
  more 
  distinctly 
  punctured 
  ; 
  theantennse 
  are 
  one-half 
  the 
  length 
  of 
  

   the 
  body, 
  the 
  first 
  joint 
  reaching 
  the 
  occiput, 
  the 
  second 
  joint 
  equal 
  to 
  

   the 
  two 
  following. 
  With 
  this 
  species 
  I 
  doubtfully 
  associate 
  a 
  female 
  

   from 
  Missouri 
  Territory, 
  agreeing 
  in 
  form 
  and 
  punctation, 
  in 
  which 
  the 
  

  

  