﻿•1 
  10 
  REVISION 
  OF 
  THE 
  KI. 
  ATKIt 
  II> 
  F 
  

  

  16. 
  C. 
  coniunge'ns, 
  niger, 
  parce 
  griseo-pilosus, 
  thorace 
  canaliculato, 
  latitudine 
  longiore, 
  antice 
  

   angustato, 
  convexiusculo, 
  ante 
  basin 
  paulo 
  latiore, 
  lateribus 
  late 
  rotundatis, 
  sat 
  punctato, 
  lateribus 
  

   paulo 
  densius, 
  elytris 
  lateribus 
  vix 
  dilatatis, 
  apice 
  \i\ 
  oblique 
  attenuatis, 
  profunde 
  striatis, 
  striis 
  punc- 
  

   tatis, 
  interstitiis 
  subbiseriatim 
  punctatis, 
  antennis 
  rufo-piceis, 
  pedibus 
  ferrugineis. 
  Long. 
  - 
  42. 
  

  

  One 
  specimen, 
  California, 
  Mr. 
  J. 
  Child. 
  This 
  species 
  at 
  first 
  seems 
  similar 
  to 
  C. 
  aethi- 
  

   ops, 
  but 
  the 
  joints 
  of 
  the 
  antennae 
  are 
  not 
  broad 
  and 
  compressed, 
  but 
  are 
  formed 
  as 
  in 
  the 
  

   preceding 
  species: 
  the 
  third 
  joint 
  is 
  considerably 
  longer 
  than 
  the 
  second, 
  and 
  a 
  little 
  lon- 
  

   ger 
  than 
  the 
  fourth, 
  so 
  that, 
  it 
  cannot 
  be 
  associated 
  in 
  the 
  division 
  with 
  C. 
  rotundicollis 
  and 
  

   C. 
  sulcicollis, 
  to 
  which 
  it 
  forms 
  a 
  transition 
  by 
  its 
  less 
  dilated 
  elytra. 
  

  

  17. 
  C. 
  pulchcr, 
  crassiusculus, 
  vix 
  tenuissirae 
  puboscens, 
  niger, 
  thorace 
  quadrato, 
  convexo, 
  late- 
  

   ribus 
  antice 
  rotundatis, 
  angulis 
  posticis 
  acutis 
  paulo 
  productis, 
  confertim 
  punctato, 
  sanguinco, 
  vitta 
  

   dilatata 
  dorsali 
  margine 
  prosternoque 
  nigerrimis, 
  elytris 
  testaceis, 
  sutura, 
  macula 
  elongata 
  liumerali, 
  

   fasciaque 
  pone 
  medium 
  transversa 
  nigris, 
  striis 
  profundis 
  punctulatis, 
  interstitiis 
  parcc 
  punctulatis, 
  

   abdominis 
  lateribus 
  sanguineis. 
  Long. 
  - 
  53. 
  

  

  One 
  specimen 
  from 
  New 
  Hampshire 
  in 
  Dr. 
  Harris' 
  collection. 
  It 
  closely 
  resembles 
  Ela- 
  

   ter 
  cruciatus 
  Linn, 
  of 
  Europe, 
  but 
  differs 
  (according 
  to 
  description) 
  by 
  the 
  black 
  feet 
  

   and 
  antennae. 
  This 
  species 
  might 
  perhaps 
  be 
  more 
  naturally 
  placed 
  in 
  the 
  preceding 
  di- 
  

   vision 
  near 
  C. 
  hicroglyphicus: 
  the 
  joints 
  of 
  the 
  antennae 
  do 
  not 
  diminish 
  in 
  size 
  after 
  the 
  

   fourth, 
  as 
  in 
  the 
  preceding 
  species 
  of 
  this 
  division 
  : 
  the 
  fourth 
  is, 
  however, 
  decidedly 
  lon- 
  

   ger 
  than 
  the 
  fifth. 
  

  

  A..— 
  2.— 
  8. 
  

  

  18. 
  C. 
  c 
  r 
  a 
  s 
  s 
  u 
  s 
  , 
  obesus, 
  piceo-niger, 
  vix 
  tenuissime 
  pubescens, 
  fronte 
  profunde 
  concava, 
  thorace 
  

   transverso, 
  inflato, 
  lateribus 
  antice 
  rotundatis, 
  apice 
  fortius 
  transversira 
  impresso, 
  minus 
  dense 
  punc- 
  

   tato, 
  elytris 
  striis 
  punctatis, 
  interstitiis 
  plants 
  parcius 
  punctatis, 
  pedibus 
  piceis. 
  Long. 
  -55. 
  

  

  Kentucky, 
  Dr. 
  Harris; 
  Pennsylvania, 
  Dr. 
  Melsheimer. 
  The 
  deep 
  impression 
  along 
  the 
  

   apical 
  margin 
  of 
  the 
  thorax 
  is 
  dilated 
  at 
  the 
  angle, 
  each 
  side, 
  and 
  is 
  a 
  remarkable 
  charac- 
  

   ter. 
  It 
  is 
  much 
  more 
  robust 
  and 
  inflated 
  in 
  its 
  form 
  than 
  any 
  other 
  of 
  our 
  species. 
  

  

  A.-2.- 
  ? 
  . 
  

  

  19. 
  C. 
  r 
  o 
  tun 
  d 
  i 
  c 
  ol 
  lis, 
  angustatus, 
  niger, 
  glaber, 
  thorace 
  quadrato, 
  latitudine 
  paulo 
  breviore, 
  

   lateribus 
  rotundato, 
  angulis 
  posticis 
  parvis 
  acutis 
  divaricatis, 
  convexo, 
  parce 
  subtilius 
  punctato, 
  (ssepe 
  

   sanguineo,) 
  elytris 
  lateribus 
  vix 
  dilatatis, 
  apice 
  rotundatim 
  attenuatis, 
  striis 
  profundis 
  impunctatis, 
  

   interstitiis 
  vix 
  punctulatis, 
  pedibus 
  nigris, 
  tarsis 
  fere 
  testaceis. 
  Long. 
  -41. 
  

  

  Mater 
  rotundicollis 
  Say, 
  Ann. 
  Lye. 
  1, 
  259, 
  (var. 
  thor. 
  sanguineo.) 
  

  

  Vermont, 
  Prof. 
  Adams. 
  The 
  black 
  variety 
  is 
  from 
  Pennsylvania, 
  and 
  was 
  given 
  me 
  by 
  

   Rev. 
  D. 
  Ziegler. 
  The 
  remarkably 
  rounded, 
  quadrate 
  thorax, 
  with 
  small, 
  sharp, 
  diverging 
  

   angles, 
  will 
  distinguish 
  this 
  from 
  any 
  other 
  native 
  species. 
  It 
  differs 
  from 
  all 
  the 
  preceding 
  

   by 
  the 
  more 
  parallel 
  elytra, 
  which 
  behind 
  the 
  middle 
  are 
  not 
  obliquely 
  narrowed, 
  but 
  re- 
  

   gularly 
  rounded. 
  The 
  fourth 
  joint 
  of 
  the 
  antennae, 
  although 
  longer 
  than 
  the 
  following, 
  is 
  

   not 
  so 
  much 
  so 
  as 
  in 
  the 
  species 
  just 
  described: 
  the 
  antennae 
  are 
  hardly 
  serrate, 
  so 
  that 
  

   the 
  fourth 
  and 
  following 
  joints 
  are 
  very 
  little 
  wider 
  than 
  the 
  third. 
  

  

  