﻿430 
  REVISION 
  OF 
  THE 
  ELATERIDiE 
  

  

  Vermont, 
  Prof. 
  Adams; 
  Illinois, 
  Mr. 
  Willcox. 
  This 
  very 
  pretty 
  little 
  species 
  is 
  easily 
  

   distinguished 
  by 
  its 
  brilliant 
  metallic 
  purple 
  thorax: 
  the 
  antenna' 
  are 
  longer 
  than 
  the 
  head 
  

   and 
  thorax, 
  and 
  serrate; 
  the 
  second 
  and 
  third 
  joints 
  are 
  equal, 
  and 
  together 
  equal 
  in 
  length 
  to 
  

   the 
  fourth: 
  the 
  anterior 
  margin 
  of 
  the 
  clypeus 
  is 
  reflexed, 
  and 
  almost 
  straight. 
  In 
  the 
  

   larger 
  specimen 
  the 
  punctures 
  of 
  the 
  striae 
  of 
  the 
  elytra 
  are 
  hardly 
  larger 
  than 
  those 
  of 
  

   the 
  interstitial 
  spaces: 
  in 
  both 
  the 
  base 
  is 
  transversely 
  impressed. 
  

  

  A. 
  — 
  y. 
  

  

  5. 
  L. 
  interstitialis, 
  tenco-nigcr, 
  griseo-pubescens, 
  clypeo 
  late 
  emarginato, 
  thorace 
  latitudine 
  

   longiorc 
  dense 
  punctato, 
  angulis 
  posticis 
  earinatis 
  paulo 
  productis, 
  clytris 
  striis 
  acutis, 
  punctulatis, 
  

   interstitiia 
  planis 
  confertim 
  punctatis, 
  antcunis 
  pedibusque 
  rufis. 
  Long. 
  - 
  6. 
  

  

  tis 
  interstitialis 
  Melsheimer, 
  l'roc. 
  Acad. 
  Nat. 
  Sc. 
  2, 
  215. 
  

  

  One 
  specimen 
  from 
  Pennsylvania, 
  in 
  Dr. 
  Melsheimcr's 
  collection. 
  This 
  only 
  differs 
  

   from 
  L. 
  cylindriformis 
  by 
  its 
  larger 
  size, 
  and 
  more 
  finely 
  punctured 
  elytral 
  striae: 
  I 
  have 
  

   doubts 
  of 
  its 
  being 
  really 
  distinct. 
  

  

  6. 
  L. 
  cylindriformis, 
  fusco-niger, 
  dense 
  fusco 
  vel 
  griseo-pubescens, 
  clypeo 
  late 
  emarginato, 
  

   thorace 
  latitudine 
  longiore, 
  dense 
  punctato, 
  angulis 
  posticis 
  earinatis, 
  paulo 
  productis, 
  elytris 
  striis 
  

   acutis 
  parcius 
  punctatis, 
  interstitiis 
  planis 
  confertim 
  punctulatis, 
  basi 
  margineque 
  saspe 
  rufescentibus, 
  

   antennarum 
  basi 
  pedibusque 
  runs, 
  illis 
  saipe 
  rufescentibus. 
  Long. 
  '4 
  — 
  '45. 
  

  

  ? 
  Elater 
  cylindriformis 
  Herbst, 
  Kiifer, 
  10, 
  93; 
  tab. 
  166, 
  fig. 
  9. 
  

  

  Mater 
  cylindriformis 
  Say, 
  Jour. 
  Acad. 
  Nat. 
  Sc. 
  3, 
  176; 
  Trans. 
  Am. 
  Phil. 
  Soc. 
  6, 
  1G0. 
  

  

  Limonius 
  hirticollis 
  Melsheimer, 
  Proc. 
  Acad. 
  Nat. 
  Sc. 
  2, 
  215. 
  

  

  Very 
  abundant 
  in 
  the 
  eastern 
  part 
  of 
  the 
  United 
  States. 
  Although 
  the 
  description 
  given 
  by 
  

   Say, 
  above 
  cited, 
  may 
  not 
  be 
  sufficient 
  fully 
  to 
  identify 
  this 
  species, 
  his 
  subsequent 
  obser- 
  

   vations, 
  and 
  the 
  notes 
  under 
  his 
  description 
  of 
  E 
  later 
  a 
  ppress 
  ifr 
  ons 
  (Ann. 
  Lye. 
  1 
  , 
  267,) 
  

   remove 
  all 
  doubt. 
  Herbst's 
  description 
  seems 
  rather 
  to 
  apply 
  to 
  this 
  species, 
  as 
  the 
  Co- 
  

   rymbetes, 
  to 
  which 
  it 
  is 
  referred 
  by 
  Germar, 
  and 
  which 
  is 
  El. 
  appressifrons 
  Say, 
  has 
  the 
  

   antennae 
  nearly 
  black, 
  even 
  at 
  the 
  base: 
  the 
  form 
  of 
  the 
  clypeus 
  is, 
  unfortunately, 
  not 
  

   mentioned. 
  This 
  determination 
  is 
  confirmed 
  by 
  Dr. 
  Melsheimer, 
  by 
  whom 
  specimens 
  were 
  

   furnished 
  to 
  Say 
  and 
  Knoch 
  : 
  his 
  L. 
  hirticollis 
  is, 
  however, 
  merely 
  a 
  large 
  female 
  of 
  the 
  

   same 
  species: 
  it 
  is 
  curious 
  that 
  he 
  should 
  have 
  placed 
  it 
  under 
  a 
  genus 
  different 
  from 
  the 
  

   preceding 
  closely 
  allied 
  species. 
  

  

  7. 
  L. 
  confusus, 
  ceneo-piceus, 
  cinereo-pubescens, 
  clypeo 
  late 
  rotundato, 
  thorace 
  latitudine 
  lon- 
  

   giore, 
  antrorsum 
  subangustato, 
  lateribus 
  vix 
  rotundatis, 
  punctato, 
  posticc 
  canaliculato, 
  angulis 
  posticis 
  

   brevibus, 
  subcarinatis, 
  non 
  divaricatis, 
  elytris 
  striis 
  punctatis, 
  interstitiis 
  planis 
  sat 
  punctatis, 
  pedibus 
  

   piceo-rufis, 
  antennis 
  totis 
  nigris. 
  Long. 
  -37. 
  

  

  One 
  specimen 
  from 
  Lake 
  Superior, 
  and 
  another 
  from 
  New 
  York. 
  This 
  species 
  resem- 
  

   bles 
  very 
  closely 
  the 
  next, 
  but 
  may 
  be 
  distinguished 
  by 
  the 
  moderately 
  produced 
  clypeus 
  

   being 
  rounded 
  anteriorly, 
  not 
  truncate: 
  the 
  antenna) 
  are 
  entirely 
  black, 
  a 
  little 
  longer 
  than 
  

   the 
  head 
  and 
  thorax, 
  serrate, 
  with 
  the 
  second 
  and 
  third 
  joints 
  subequal, 
  together 
  a 
  little 
  

   longer 
  than 
  the 
  fourth: 
  the 
  thorax 
  is 
  distinctly 
  but 
  slightly 
  narrowed 
  in 
  front, 
  and 
  scarcely 
  

   rounded 
  on 
  the 
  sides: 
  the 
  epipleurse 
  are 
  testaceous 
  at 
  the 
  margin, 
  and 
  the 
  thighs 
  are 
  darker 
  

   than 
  the 
  tibiae. 
  

  

  