﻿11 
  1 
  REVISION 
  OF 
  THE 
  ELATERID.E 
  

  

  One 
  specimen, 
  Ohio, 
  Dr. 
  Schaum. 
  The 
  robust 
  subcylindrical 
  form 
  gives 
  it 
  a 
  strong 
  

  

  mblance 
  to 
  the 
  species 
  of 
  the 
  preceding 
  genus, 
  from 
  which 
  it 
  differs 
  principally 
  in 
  

  

  having 
  the 
  plates 
  of 
  the 
  posterior 
  coxae 
  not 
  dilated 
  internally, 
  and 
  the 
  fourth 
  joint 
  of 
  the 
  

  

  tarsi 
  slightly 
  lobcd. 
  It 
  is 
  awkward 
  that 
  the 
  specific 
  name 
  should 
  belong 
  to 
  a 
  species 
  

  

  with 
  brown 
  antennas. 
  

  

  Emathion 
  Lap. 
  

  

  1. 
  E. 
  atropos, 
  clongatus, 
  posticc 
  paulo 
  angustatus, 
  nigro-piecus, 
  tcnuitcr 
  fulvo-pubescens, 
  capite 
  

   thora6eque 
  rufo-piceis, 
  scabris, 
  hoc 
  latitudinc 
  non 
  brcviore, 
  lateribus 
  ante 
  medium 
  rotundatis, 
  anguli8 
  

  

  icribus 
  acutis, 
  canaliculato, 
  utrinquo 
  ante 
  medium 
  foveato, 
  et 
  pone 
  medium 
  transversim 
  

   impresso, 
  elytris 
  scabris, 
  tenuiter 
  fere 
  obsolete 
  striatis. 
  Long. 
  -32. 
  

   Lee. 
  Proc. 
  Acad. 
  Nat. 
  Sc. 
  6, 
  17. 
  

   Eucnemis 
  atropos 
  Say, 
  Trans. 
  Am. 
  Phil. 
  Soc. 
  6, 
  187. 
  

  

  One 
  specimen, 
  Louisiana, 
  Dr. 
  Schaum. 
  The 
  third 
  joint 
  of 
  the 
  antenna) 
  is 
  longer 
  than 
  

   the 
  fourth, 
  and 
  the 
  last 
  six 
  joints 
  are 
  slightly 
  enlarged 
  : 
  the 
  last 
  being, 
  probably, 
  a 
  cha- 
  

   racter 
  belonging 
  to 
  the 
  male: 
  the 
  fourth 
  joint 
  of 
  the 
  tarsi 
  is 
  slightly 
  lobcd 
  beneath: 
  in 
  

   Say's 
  description, 
  by 
  an 
  error 
  commonly 
  called 
  clerical, 
  the 
  last 
  instead 
  of 
  the 
  fourth 
  joint 
  

   is 
  said 
  to 
  be 
  dilated. 
  

  

  2. 
  E. 
  penetrans, 
  valde 
  clongatus, 
  postice 
  paulo 
  angustatus, 
  ater, 
  subtilissimc 
  fulvo-pubescens, 
  

   subtiliter 
  confertissime 
  scabro-punctatus, 
  fronte 
  linea 
  tenuissima 
  hevi, 
  thorace 
  latitudinc 
  sesruii 
  lon- 
  

   giore, 
  lateribus 
  parallelis 
  antice 
  rotundatis, 
  pone 
  medium 
  canaliculato, 
  utrinque 
  obsolete 
  bifoveato, 
  

   elytris 
  tenuiter 
  striatis, 
  antennis 
  pedibusque 
  rufo-piceis. 
  Long. 
  *22 
  — 
  "3. 
  

  

  Lcc. 
  Troc. 
  Acad. 
  Nat. 
  Sc. 
  (3, 
  47. 
  

  

  Georgia, 
  rare. 
  In 
  my 
  former 
  description, 
  I 
  only 
  mentioned 
  the 
  two 
  anterior 
  fovea? 
  of 
  

   the 
  thorax, 
  but 
  on 
  re-examination, 
  I 
  find 
  that 
  the 
  posterior 
  pair, 
  just 
  behind 
  the 
  middle, 
  

   are 
  also 
  visible: 
  the 
  si.\th 
  joint 
  of 
  the 
  antennae, 
  in 
  this 
  species, 
  is 
  not 
  more 
  than 
  half 
  the 
  

   size 
  of 
  the 
  seventh, 
  while, 
  in 
  the 
  preceding, 
  they 
  are 
  equally 
  enlarged. 
  

  

  3. 
  E. 
  frontosus, 
  nigro-piceus, 
  modice 
  clongatus, 
  griseo-pubescens, 
  capite 
  punctato, 
  linea 
  fron- 
  

   tali 
  vix 
  distincta, 
  thorace 
  subtransverso, 
  lateribus 
  parallelis 
  antice 
  rotundatis, 
  confertissime 
  scabro- 
  

   punctato, 
  postice 
  canaliculato, 
  utrinque 
  vix 
  obsolete 
  foveato, 
  elytris 
  (parallelis 
  '?) 
  scabro-punctatis, 
  

   tenuiter 
  fere 
  obsolete 
  striatis. 
  Long. 
  -2. 
  

  

  Eucnemis 
  frontosus 
  Say, 
  Trans. 
  Am. 
  Phil. 
  Soc. 
  6, 
  187. 
  

   Epiphanis 
  canaliculatus 
  Lee. 
  Proc. 
  Acad. 
  Nat. 
  Sc. 
  6, 
  4G. 
  

  

  One 
  female 
  specimen, 
  Pennsylvania. 
  On 
  comparing 
  this 
  with 
  the 
  preceding 
  species, 
  I 
  

   do 
  not 
  find 
  sufficient 
  differences 
  to 
  warrant 
  their 
  being 
  retained 
  in 
  separate 
  genera: 
  the 
  

   fourth 
  joint 
  of 
  the 
  tarsi, 
  however, 
  is 
  smaller, 
  and 
  is 
  not 
  lobed: 
  the 
  form 
  of 
  body 
  is 
  a 
  little 
  

   stouter, 
  but 
  is 
  different 
  from 
  that 
  of 
  Epiphanis 
  from 
  the 
  thorax 
  not 
  being 
  regularly 
  nar- 
  

   rowed 
  in 
  front: 
  the 
  plates 
  of 
  the 
  posterior 
  coxa?, 
  so 
  far 
  as 
  I 
  can 
  examine 
  them, 
  appear 
  to 
  

   be 
  gradually 
  dilated 
  as 
  in 
  the 
  two 
  preceding 
  species, 
  not 
  suddenly 
  dilated 
  and 
  subtruncate 
  

   as 
  in 
  Epiphanis 
  cristatus: 
  they 
  are, 
  however, 
  pushed 
  out 
  of 
  place 
  by 
  the 
  pin, 
  and 
  cannot 
  

   be 
  properly 
  examined: 
  the 
  third 
  joint 
  of 
  the 
  antenna) 
  is 
  a 
  little 
  longer 
  than 
  the 
  fourth: 
  

   the 
  eleventh 
  is 
  nearly 
  as 
  long 
  as 
  the 
  two 
  preceding. 
  This 
  is 
  evidently 
  Say's 
  species, 
  

   although, 
  by 
  some 
  strange 
  oversight, 
  I 
  failed 
  previously 
  to 
  identify 
  it 
  as 
  such. 
  

  

  