﻿17 
  1 
  REVISION 
  OK 
  THE 
  EI..VI 
  I'.KIK 
  K 
  

  

  Georgia. 
  1 
  have 
  only 
  males. 
  The 
  smooth 
  but 
  not 
  impressed 
  dorsal 
  line 
  distinguishes 
  

   this 
  from 
  the 
  allied 
  species. 
  The 
  sides 
  of 
  the 
  thorax 
  arc 
  thickly, 
  the 
  disc 
  less 
  densely, 
  

   punctured; 
  the 
  posterior 
  angles 
  have 
  two 
  distinct 
  carinas. 
  In 
  one 
  specimen, 
  which 
  is 
  

   possibly 
  a 
  distinct 
  species, 
  the 
  thorax 
  is 
  less 
  convex, 
  and 
  with 
  the 
  exception 
  of 
  the 
  dorsal 
  

   line 
  is 
  equally 
  and 
  densely 
  punctured. 
  

  

  5. 
  C. 
  i 
  n 
  c 
  e 
  r 
  t 
  us, 
  piceus, 
  fusco-pubescens, 
  fronte 
  concava, 
  tliorace 
  antrorsuui 
  a 
  basi 
  angustato, 
  

   latitudine 
  vix 
  breviore, 
  latcribus 
  late 
  rotundatis, 
  crebre 
  punctato, 
  postice 
  subcanaliculato, 
  elytris 
  sub- 
  

   parallelis, 
  striis 
  impressis 
  punctatis, 
  interstitiis 
  subtiliter 
  rugosc-punctulatis, 
  antennis 
  pedibusque 
  cas- 
  

   taneis, 
  illis 
  articulo 
  3'° 
  2" 
  ,: 
  " 
  duplo 
  longiore, 
  (maris 
  lanuginosis, 
  feuiina? 
  pubescentibus.) 
  Long. 
  -61 
  — 
  -75. 
  

  

  Missouri 
  Territory. 
  The 
  sides 
  of 
  the 
  thorax 
  in 
  one 
  male 
  are 
  nearly 
  straight; 
  in 
  the 
  

   females 
  they 
  are 
  broadly 
  rounded: 
  the 
  elytra 
  are 
  very 
  slightly 
  narrowed 
  from 
  the 
  base 
  in 
  

   the 
  males, 
  while 
  they 
  are 
  parallel 
  in 
  the 
  females. 
  This 
  species 
  is 
  very 
  similar 
  to 
  the 
  next, 
  

   and 
  is 
  only 
  to 
  he 
  distinguished 
  by 
  the 
  more 
  gradually 
  rounded 
  sides 
  of 
  the 
  thorax. 
  The 
  

   posterior 
  angles 
  are 
  bicarinate. 
  

  

  6. 
  C. 
  d 
  e 
  c 
  u 
  in 
  a 
  li 
  u 
  s 
  , 
  piceus, 
  fusco-pubescens, 
  fronte 
  concava, 
  tliorace 
  latitudine 
  fere 
  breviore, 
  la- 
  

   teribus 
  postice 
  fere 
  parallelis 
  antice 
  rotundatis, 
  crebre 
  grossius 
  punctato, 
  postice 
  vix 
  canaliculato, 
  ely- 
  

   tris 
  parallels, 
  striis 
  impressis 
  punctatis, 
  interstitiis 
  punctulatis, 
  antennis 
  (maris 
  longius, 
  feinina: 
  sub- 
  

   tilius) 
  pubescentibus, 
  articulo 
  3'° 
  2 
  rul 
  ° 
  duplo 
  longiore. 
  Long. 
  - 
  68 
  — 
  -7 
  ; 
  i. 
  

  

  Erichson, 
  Germ. 
  Zeitschr. 
  3, 
  104. 
  

  

  Maryland, 
  Prof. 
  Adams. 
  Although 
  differing 
  but 
  slightly 
  in 
  appearance 
  from 
  the 
  pre- 
  

   ceding, 
  the 
  antenna? 
  of 
  the 
  male 
  are 
  not 
  covered 
  with 
  erect 
  hairs, 
  but 
  with 
  prostrate 
  

   hairs, 
  longer 
  than 
  those 
  seen 
  in 
  the 
  female. 
  The 
  inner 
  carina 
  of 
  the 
  posterior 
  angles 
  of 
  

   the 
  thorax 
  is 
  distinct. 
  

  

  One 
  female 
  differs 
  in 
  having 
  the 
  punctures 
  of 
  the 
  interstices 
  of 
  the 
  elytra 
  very 
  distinct. 
  

  

  7. 
  C. 
  clandestinus, 
  riiger, 
  subtiliter 
  cinereo-pubescens, 
  fronte 
  concava, 
  tliorace 
  latitudine 
  lon- 
  

   giore, 
  elytris 
  vix 
  latiore, 
  lateribus 
  fere 
  parallelis 
  antice 
  late 
  rotundatis, 
  confertini 
  subtilius 
  punctato, 
  

   postice 
  breviter 
  canaliculato, 
  elytris 
  parallelis, 
  striis 
  punctatis, 
  interstitiis 
  subtiliter 
  rugose 
  punctula- 
  

   tis, 
  antennis 
  lanuginosis 
  piceis 
  articulis 
  2 
  et 
  3 
  parvis 
  cequalibus, 
  pedibus 
  runs. 
  Long. 
  -32 
  — 
  '37. 
  

  

  Erichson, 
  Germ. 
  Zeitschr. 
  3, 
  112. 
  

  

  Middle 
  and 
  Southern 
  States. 
  

  

  8. 
  C. 
  s 
  e 
  cr 
  e 
  tus, 
  niger, 
  nitidus, 
  pube 
  subtili 
  atro-griseo 
  vix 
  conspicua 
  vestitus, 
  fronte 
  late 
  con- 
  

   cava, 
  fortius 
  marginata, 
  tliorace 
  latitudine 
  longiore 
  lateribus 
  parallelis 
  antice 
  rotundatis, 
  minus 
  con- 
  

   vexo, 
  disperse 
  punctato, 
  postice 
  breviter 
  canaliculato, 
  elytris 
  tliorace 
  vix 
  angustioribus 
  parallelis, 
  striis 
  

   profunde 
  punctatis, 
  interstitiis 
  disperse 
  punctulatis, 
  pedibus 
  antennisque 
  runs, 
  his 
  breviter 
  lanuginosis, 
  

   articulo 
  3 
  i0 
  2" 
  d0 
  paulo 
  longiore. 
  Long. 
  -32 
  — 
  -41. 
  

  

  Georgia. 
  The 
  carina 
  of 
  the 
  posterior 
  angles 
  of 
  the 
  thorax 
  is 
  very 
  long, 
  very 
  close 
  to 
  

   the 
  margin, 
  and 
  parallel 
  with 
  it. 
  The 
  form 
  of 
  the 
  thorax 
  causes 
  this 
  species 
  to 
  resemble 
  

   the 
  preceding, 
  but 
  its 
  characters 
  are 
  very 
  different. 
  It, 
  however, 
  forms 
  the 
  passage 
  from 
  

   the 
  species 
  having 
  the 
  front 
  concave, 
  to 
  those 
  with 
  the 
  front 
  flattened 
  or 
  convex. 
  

  

  9. 
  C. 
  i 
  g 
  n 
  o 
  b 
  i 
  1 
  i 
  s 
  , 
  fusco-piceus, 
  elongatus, 
  griseo-pubescens, 
  fronte 
  plana, 
  margine 
  subreflexo, 
  tho- 
  

   race 
  latitudine 
  subbreviore 
  antrorsum 
  paulo 
  angustato, 
  lateribus 
  rectis, 
  minus 
  convexo, 
  sat 
  dense 
  punc- 
  

  

  