﻿• 
  L.M&7 
  

  

  REVISION 
  

  

  OF 
  

  

  THE 
  CICINDELjE 
  OF 
  THE 
  UNITED 
  STATES. 
  

  

  [EXTRACTED 
  FROM 
  THE 
  TRANSACTIONS 
  OP 
  TIIE 
  AMERICAN 
  PHILOSOPHICAL 
  SOCIETY. 
  — 
  VOL. 
  XI. 
  — 
  READ 
  

  

  FEBRUARY 
  1ST, 
  1850'.] 
  

  

  The 
  genus 
  Cicindcla, 
  a 
  favourite 
  with 
  all 
  entomologists, 
  contains 
  a 
  very 
  large 
  number 
  of 
  

   species 
  which 
  are 
  mostly 
  distinguished 
  by 
  brilliant 
  colours, 
  and 
  conspicuous 
  markings. 
  

   Although 
  easily 
  recognised 
  by 
  direct 
  comparison, 
  the 
  structure 
  of 
  these 
  numerous 
  species 
  

   is 
  varied 
  upon 
  such 
  uniform 
  types, 
  that 
  much 
  difficulty 
  is 
  found 
  in 
  identifying 
  an 
  un- 
  

   known 
  one 
  by 
  description, 
  and 
  the 
  descriptions 
  given 
  by 
  authors 
  are 
  frequently 
  either 
  

   obscure 
  from 
  their 
  brevity, 
  or 
  tedious 
  from 
  their 
  length. 
  This 
  necessarily 
  results 
  from 
  

   the 
  want 
  of 
  success 
  in 
  dividing 
  the 
  genus 
  into 
  small 
  groups 
  defined 
  by 
  easily 
  recognised 
  

   characters 
  ; 
  and 
  it 
  is 
  much 
  to 
  be 
  regretted 
  that 
  some 
  of 
  the 
  entomologists 
  of 
  Europe, 
  with 
  

   large 
  collections 
  at 
  hand, 
  have 
  not 
  made 
  an 
  effort 
  to 
  produce 
  a 
  monograph 
  of 
  this 
  beauti- 
  

   ful 
  genus. 
  

  

  The 
  species 
  found 
  in 
  the 
  United 
  States 
  have 
  been 
  increased 
  since 
  the 
  publication 
  of 
  Say's 
  

   monograph, 
  in 
  the 
  first 
  volume 
  of 
  this 
  work, 
  from 
  13 
  to 
  G5; 
  the 
  descriptions 
  of 
  these 
  

   have 
  become 
  so 
  scattered 
  as 
  to 
  be 
  rather 
  troublesome 
  to 
  the 
  student, 
  and 
  as 
  1 
  have 
  fortu- 
  

   nately 
  obtained 
  specimens 
  of 
  all 
  those 
  previously 
  described, 
  excepting 
  three 
  made 
  known 
  

   by 
  Say 
  after 
  the 
  publication 
  of 
  the 
  monograph 
  mentioned, 
  it 
  appeared 
  to 
  me 
  to 
  be 
  a 
  work 
  

   not 
  altogether 
  without 
  profit 
  to 
  science, 
  to 
  attempt 
  to 
  bring 
  together 
  such 
  notes 
  upon 
  

   these 
  species 
  as 
  would 
  enable 
  subsequent 
  investigations 
  to 
  be 
  carried 
  on 
  with 
  less 
  labour 
  

   than 
  has 
  been 
  previously 
  required. 
  

  

  Before 
  proceeding 
  to 
  the 
  description 
  of 
  the 
  species, 
  I 
  have 
  attempted 
  to 
  group 
  them 
  

   in 
  such 
  manner 
  as 
  to 
  divide 
  the 
  characters 
  common 
  to 
  several, 
  from 
  those 
  which 
  are 
  

   peculiar 
  and 
  diagnostic, 
  and 
  I 
  have 
  presented 
  the 
  result 
  in 
  a 
  synoptic 
  table. 
  In 
  making 
  

  

  