﻿428 
  REVISION 
  OF 
  THE 
  ELATERID.K 
  

  

  A 
  specimen 
  from 
  Pennsylvania, 
  which 
  I 
  consider 
  as 
  the 
  male 
  of 
  this 
  species, 
  has 
  the 
  

   sides 
  of 
  the 
  thorax 
  perfectly 
  straight, 
  the 
  posterior 
  angles 
  scarcely 
  diverging, 
  and 
  the 
  an- 
  

   tenna) 
  longer 
  than 
  the 
  head 
  and 
  thorax. 
  It 
  is 
  much 
  smaller 
  than 
  the 
  female, 
  (-38 
  unc.,) 
  

   and 
  darker 
  coloured. 
  In 
  this 
  and 
  the 
  next 
  species 
  the 
  second 
  and 
  third 
  joints 
  of 
  the 
  an- 
  

   tenna? 
  are 
  equal, 
  and, 
  together, 
  not 
  longer 
  than 
  the 
  fourth. 
  

  

  4. 
  A. 
  bi 
  color, 
  supra 
  ater, 
  pubc 
  crecta 
  nigro-grisca 
  vestitus, 
  thorace 
  latitudine 
  fere 
  sesqui 
  lon- 
  

   giore, 
  (antrorsum 
  angustato, 
  lateribus 
  paulo 
  rotundatis,) 
  confevtim 
  punctato, 
  angulis 
  posticis 
  piceis 
  sub- 
  

   diyaricatis, 
  elytris 
  striis 
  tenuibus 
  punctulatis, 
  interstitiia 
  confertim 
  rugose 
  punctulatis, 
  subtus 
  casta- 
  

   neus, 
  antennis 
  pedibusque 
  testaceis. 
  Long. 
  -35. 
  

  

  One 
  specimen 
  found 
  at 
  New 
  York. 
  It 
  is 
  a 
  female, 
  having 
  the 
  antenna? 
  as 
  long 
  as 
  the 
  

   head 
  and 
  thorax. 
  

  

  Pityobius 
  Lee. 
  

   Frons 
  producta, 
  profunde 
  excavata; 
  mandibula? 
  apice 
  emarginata?; 
  antenna? 
  elongate? 
  11-articu- 
  

   lata?, 
  maris 
  bipectinata?, 
  femina? 
  subserrata?, 
  articulis 
  2 
  et 
  3 
  minoribus, 
  illo 
  minore, 
  ll 
  m0 
  simplici; 
  pres- 
  

   ternum 
  antice 
  lobatum, 
  postice 
  mucronatum, 
  lateribus 
  rectis, 
  antice 
  subexcavatis; 
  mesosternum 
  non 
  

   protuberans 
  : 
  coxa? 
  postica? 
  laminis 
  angustis 
  intus 
  sensim 
  paulo 
  latioribus, 
  non 
  dentatis 
  : 
  tarsi 
  articulo 
  

   1""' 
  elongato, 
  sequentibus 
  duobus 
  a?quali, 
  apice 
  subtus 
  spongioso, 
  2 
  — 
  4 
  sensim 
  brevioribus 
  subtus 
  bre- 
  

   viter 
  lobatis, 
  5 
  lt) 
  longiore 
  tenui, 
  unguiculis 
  simplicibus. 
  

  

  The 
  body 
  is 
  long 
  and 
  parallel, 
  not 
  convex; 
  the 
  thorax 
  without 
  basal 
  fissures, 
  with 
  the 
  

   posterior 
  angles 
  acute, 
  produced 
  and 
  diverging, 
  and 
  marked 
  with 
  an 
  indistinct 
  carina 
  pa- 
  

   rallel 
  to 
  the 
  margin. 
  

  

  1. 
  P. 
  anguinus, 
  piceo-niger, 
  tenuiter 
  pubescens, 
  thorace 
  confluenter 
  punctato, 
  profunde 
  cana- 
  

   licular, 
  antice 
  utrinque 
  profunde 
  foveato, 
  angulis 
  posticis 
  elongatis, 
  divaricatis 
  obsolete 
  carinatis, 
  

   elytris 
  striis 
  profundis, 
  valde 
  punctatis, 
  iuterstitiis 
  convexis 
  subtilius 
  punctatis. 
  Long. 
  -8 
  — 
  1-0. 
  

  

  This 
  fine 
  species 
  is 
  found 
  in 
  pine 
  forests, 
  but 
  is 
  rare: 
  my 
  specimens 
  came 
  from 
  the 
  

   Southern 
  States, 
  but 
  Dr. 
  Harris 
  has 
  found 
  it 
  in 
  New 
  Hampshire. 
  The 
  late 
  Mr. 
  Melly 
  sent 
  

   me, 
  under 
  the 
  name 
  Calocerus 
  niger, 
  (Westwood,) 
  two 
  males, 
  found 
  in 
  turpentine. 
  I 
  have 
  

   substituted 
  for 
  the 
  specific 
  name 
  that 
  under 
  which 
  it 
  appears 
  in 
  Dejean's 
  catalogue, 
  and 
  

   have 
  been 
  compelled 
  to 
  change 
  the 
  generic 
  name, 
  as 
  being 
  applicable 
  to 
  but 
  one 
  sex. 
  

  

  Limonius 
  Esch. 
  

   This 
  genus 
  differs 
  from 
  Athous 
  in 
  having 
  the 
  first 
  and 
  second 
  joints 
  of 
  the 
  tarsi 
  equal 
  

   or 
  hardly 
  different 
  in 
  length; 
  the 
  fourth 
  is 
  not 
  suddenly 
  smaller 
  than 
  the 
  third, 
  and 
  none 
  

   of 
  the 
  joints 
  are 
  lobed 
  or 
  spongy 
  beneath. 
  Our 
  species 
  are 
  difficult 
  to 
  distinguish, 
  as 
  they 
  

   approach 
  very 
  closely 
  in 
  external 
  characters; 
  they 
  may 
  be 
  grouped 
  as 
  follows: 
  

  

  A. 
  Prosternum 
  sutura 
  laterali 
  antice 
  excavata: 
  

  

  a. 
  Clypeus 
  valde 
  emarginatus 
  ..... 
  Sp. 
  1 
  — 
  2. 
  

   Clypeus 
  late 
  vel 
  vix 
  emarginatus 
  ; 
  

  

  j3. 
  Antenna? 
  articulis 
  2 
  et 
  3 
  parvis, 
  pedibus 
  nigris 
  ... 
  Sp. 
  3 
  — 
  4. 
  

  

  y. 
  Antenna? 
  articulis 
  2 
  et 
  3 
  coniunctis 
  4 
  tn 
  maioribus, 
  pedibus 
  rufis 
  Sp* 
  5 
  — 
  11. 
  

  

  b. 
  Antenna? 
  articulis 
  2 
  et 
  3 
  parvis, 
  pedibus 
  flavis 
  - 
  - 
  - 
  Sp. 
  12 
  — 
  13. 
  

  

  B. 
  Prosternum 
  sutura 
  laterali 
  vix 
  excavata 
  .... 
  Sp. 
  14 
  — 
  25. 
  

  

  