﻿4 
  16 
  REVISION 
  OF 
  THE 
  ELATERIDjE 
  

  

  One 
  specimen, 
  California, 
  collected 
  by 
  Mr. 
  Child. 
  This 
  species 
  with 
  the 
  following 
  esta- 
  

   blishes 
  a 
  passage 
  to 
  C. 
  rubidipennis 
  and 
  others 
  above 
  described: 
  the 
  sides 
  of 
  the 
  elytra 
  are 
  

   however 
  less 
  dilated, 
  so 
  as 
  not 
  to 
  alter 
  the 
  regular 
  outline 
  of 
  the 
  anterior 
  portion; 
  the 
  anten- 
  

   nae 
  are 
  also 
  more 
  compressed, 
  and 
  the 
  third 
  joint 
  is 
  fully 
  as 
  large 
  as 
  the 
  following 
  ones: 
  

   the 
  last 
  joint 
  is 
  wanting, 
  but 
  is 
  probably 
  not 
  constricted. 
  

  

  3!'. 
  C. 
  f;il 
  lax, 
  ater, 
  cinereo-sericeus, 
  thoraco 
  latitudine 
  sublongiovc, 
  antrorsum 
  angustato, 
  late- 
  

   ribus 
  rotundatis, 
  angulis 
  posticis 
  brevibus 
  divaricatis 
  apice 
  obtusiusculis, 
  confertim 
  punctato, 
  postice 
  

   subcanaliculato, 
  elytris 
  piceo-testaccis 
  tcnuiter 
  striatis, 
  interstitiis 
  confertissime 
  subtiliter 
  punctulatis 
  

   fasciis 
  duabua 
  subdenudatis 
  notatis, 
  fortius 
  marginatis, 
  pone 
  medium 
  oblique 
  attenuatis, 
  pedibus 
  tes- 
  

   taceis 
  femoribus 
  obscurioribus, 
  antennis 
  nigris, 
  articulo 
  3 
  io 
  sequentc 
  non 
  breviore, 
  parum 
  dilatato. 
  

   Long. 
  -42. 
  

  

  Mater 
  fallax 
  Say, 
  Trans. 
  Am. 
  Phil. 
  Soc. 
  6, 
  170. 
  

  

  One 
  specimen, 
  Lake 
  Superior, 
  Dr. 
  Harris 
  has 
  found 
  it 
  in 
  New 
  Hampshire. 
  This 
  species 
  

   completes 
  the 
  connexion 
  with 
  the 
  species 
  in 
  the 
  first 
  group 
  of 
  the 
  genus: 
  in 
  addition 
  to 
  

   the 
  obliquely 
  attenuated 
  and 
  broadly 
  margined 
  elytra, 
  the 
  third 
  joint 
  of 
  the 
  antennae 
  is 
  

   only 
  half 
  as 
  wide 
  its 
  the 
  fourth: 
  the 
  last 
  joint 
  is 
  not 
  constricted. 
  The 
  bands 
  on 
  the 
  elytra 
  

   are 
  produced 
  by 
  the 
  hairs 
  being 
  placed 
  in 
  a 
  different 
  direction, 
  so 
  as 
  not 
  to 
  reflect 
  the 
  light 
  

   when 
  the 
  other 
  portions 
  show 
  a 
  sericeous 
  lustre. 
  

  

  40. 
  C. 
  divaricatus, 
  fusco-piceus, 
  breviter 
  griseo-pubescens, 
  fronte 
  paulo 
  concava, 
  thoraco 
  pa- 
  

   rum 
  convexo, 
  latitudine 
  sublongiore 
  antrorsum 
  paulo 
  angustato, 
  lateribus 
  omnino 
  rectis 
  apice 
  subito 
  

   inflexis, 
  angulis 
  posticis 
  elongatis 
  divaricatis, 
  confertim 
  sat 
  grosse 
  punctato, 
  canaliculato, 
  elytris 
  pone 
  

   medium 
  oblique 
  attenuatis, 
  plus 
  minusve 
  fusco-testaceis, 
  striis 
  punctatis 
  vix 
  impressis, 
  interstitiis 
  sub- 
  

   tilius 
  punctatis, 
  antennis 
  articulo 
  3 
  io 
  4'° 
  sequali, 
  ll 
  mo 
  vix 
  constricto. 
  Long. 
  -37— 
  -45. 
  

  

  Georgia 
  and 
  Carolina, 
  abundant. 
  This 
  species 
  will 
  be 
  easily 
  distinguished 
  by 
  the 
  long 
  

   divergent 
  posterior 
  angles 
  of 
  the 
  thorax, 
  and 
  the 
  straight 
  sides 
  which 
  are 
  inflexed 
  suddenly 
  

   at 
  the 
  apex, 
  so 
  that 
  the 
  anterior 
  angles- 
  become 
  rounded: 
  the 
  apex 
  is 
  transversely 
  impressed 
  

   and 
  excavated 
  each 
  side 
  as 
  in 
  a 
  few 
  other 
  species. 
  The 
  elytra 
  are 
  usually 
  brownish, 
  but 
  

   are 
  sometimes 
  as 
  dark 
  as 
  the 
  thorax. 
  

  

  40. 
  C. 
  appressus, 
  latiusculus, 
  niger, 
  supra 
  glaber, 
  thorace 
  latitudine 
  breviore, 
  antrorsum 
  angus- 
  

   tato, 
  lateribus 
  late 
  rotundatis, 
  angulis 
  posticis 
  productis 
  subdivergentibus, 
  obsolete 
  carinatis, 
  apice 
  

   lateribusque 
  postice 
  latioribus 
  lsete 
  runs, 
  confertim 
  subtiliter 
  punctato, 
  elytris 
  postice 
  suboblique 
  atten- 
  

   natis, 
  fortius 
  marginatis, 
  lrete 
  flavis, 
  sutura 
  antice 
  latiore, 
  macula 
  oblonga 
  humerali, 
  lineaque 
  pone 
  

   medium 
  nigerrimis, 
  striis 
  vix 
  punctatis, 
  interstitiis 
  planis 
  punctulatis, 
  tibiis 
  basi 
  testaceis, 
  antennis 
  

   nigris, 
  articulo 
  3 
  io 
  4'° 
  sequali, 
  ll 
  mo 
  vix 
  constricto. 
  Long. 
  -4. 
  

  

  Mater 
  appressus 
  Randall, 
  Boat. 
  Journ. 
  Nat. 
  Hist. 
  2, 
  11. 
  

  

  Corymbites 
  mirificus 
  Le 
  Conte, 
  Agass. 
  Lake 
  Sup. 
  228. 
  

  

  One 
  specimen, 
  Lake 
  Superior; 
  Randall 
  found 
  it 
  in 
  Maine. 
  By 
  its 
  shorter 
  thorax 
  and 
  

   broader 
  form, 
  this 
  species 
  is 
  remarkably 
  different 
  from 
  all 
  the 
  other 
  species 
  here 
  described, 
  

   in 
  which 
  the 
  third 
  joint 
  of 
  the 
  antennae 
  is 
  dilated; 
  but 
  by 
  the 
  more 
  distinctly 
  margined 
  

   elytra 
  it 
  shows 
  an 
  affinity 
  to 
  the 
  two 
  preceding 
  species. 
  The 
  under 
  surface 
  is 
  black, 
  with 
  

   the 
  exception 
  of 
  the 
  inflexed 
  margin 
  of 
  the 
  prothorax, 
  which 
  is 
  red, 
  with 
  a 
  large 
  discoidal 
  

   black 
  spot; 
  the 
  black 
  line 
  of 
  the 
  elytra 
  is 
  connected 
  with 
  some 
  indistinct 
  black 
  marks 
  

   about 
  the 
  middle, 
  which 
  in 
  some 
  specimens 
  may 
  form 
  a 
  transverse 
  fascia. 
  

  

  