﻿1I<) 
  REVISION 
  OF 
  THE 
  El. 
  \ 
  IT.IMD.r. 
  

  

  of 
  the 
  antennae, 
  and 
  the 
  absence 
  of 
  the 
  very 
  short 
  lobe 
  of 
  the 
  fourth 
  joint 
  of 
  the 
  tarsi, 
  are 
  

   insufficient 
  characters. 
  Our 
  species 
  may, 
  therefore, 
  be 
  arranged 
  in 
  three 
  groups. 
  

  

  A. 
  Tarsi 
  arliculo 
  V" 
  breviter 
  lobato; 
  ungues 
  ad 
  medium 
  fortiler 
  denlati. 
  

  

  1. 
  !•'. 
  orchesides, 
  fusco-piceus, 
  opacus, 
  helvo-pubescens, 
  capite 
  thoraceque 
  ilcn.se 
  scabro-punctu- 
  

   latis, 
  hoc 
  antrorsum 
  angustato, 
  latitudine 
  vix 
  breviore, 
  lateribus 
  rotundatis, 
  angulis 
  posticis 
  productis, 
  

   basi 
  ad 
  medium 
  tripunctata, 
  elytris 
  a 
  basi 
  vix 
  angustatis, 
  subtiliter 
  scabro-punctulatis, 
  tenuiter 
  stri- 
  

   atis, 
  pedibus 
  antennisque 
  ferrugineis, 
  his 
  versus 
  apicem 
  attenuatis, 
  articulo 
  •'!'" 
  sequente 
  vix 
  longiore. 
  

   Long. 
  "68. 
  

  

  Onychodon 
  orchesides 
  Newman, 
  Entomological 
  Magazine, 
  5, 
  384. 
  

  

  One 
  specimen 
  found 
  ;it 
  Racine, 
  Wisconsin, 
  given 
  me 
  by 
  Dr. 
  Hoy. 
  This 
  is 
  by 
  far 
  the 
  

   largest 
  species 
  of 
  Eucnemide 
  yet 
  found 
  in 
  the 
  United 
  States. 
  It 
  seems 
  to 
  be 
  very 
  rare; 
  

   the 
  unique 
  specimen 
  described 
  by 
  Newman 
  was 
  found 
  at 
  Trenton 
  Falls, 
  in 
  the 
  state 
  of 
  

   New 
  York. 
  

  

  2. 
  F. 
  bicolor, 
  supra 
  fuscus, 
  opacus 
  helvo-pubescens, 
  capite 
  thoraceque 
  dense 
  scabro-punctulatis, 
  

   hoc 
  antrorsum 
  angustato, 
  latitudine 
  vix 
  breviore, 
  lateribus 
  antice 
  rotundatis 
  postice 
  subparallelis, 
  an- 
  

   gulis 
  posticis 
  productis, 
  elytris 
  a 
  basi 
  angustatis 
  confertim 
  scabro-punctulatis, 
  tenuiter 
  striatis, 
  subtus 
  

   ferrugineus, 
  antennis 
  articulo 
  3 
  10 
  sequente 
  longiore. 
  Long. 
  - 
  37. 
  

  

  Lee. 
  Proe. 
  Acad. 
  Nat. 
  Sc. 
  G, 
  47. 
  

  

  Hylocharus? 
  bicolor 
  Melsheimer, 
  Proc. 
  Acad. 
  Nat. 
  Sc. 
  2, 
  149. 
  

  

  One 
  specimen 
  found 
  at 
  New 
  York, 
  given 
  me 
  by 
  Mr. 
  Willcox. 
  Resembles 
  in 
  general 
  

   characters 
  the 
  preceding, 
  but 
  is 
  very 
  much 
  smaller: 
  the 
  middle 
  lobe 
  of 
  the 
  base 
  of 
  the 
  

   thorax 
  is 
  shorter, 
  and 
  appears 
  to 
  be 
  only 
  bipunctate: 
  the 
  elytra 
  are 
  regularly 
  narrowed 
  

   from 
  the 
  base, 
  and 
  the 
  third 
  joint 
  of 
  the 
  antennas 
  is 
  one-third 
  longer 
  than 
  the 
  fourth: 
  a 
  

   portion 
  of 
  the 
  antennae 
  is 
  wanting, 
  so 
  that 
  I 
  do 
  not 
  know 
  if 
  they 
  are 
  more 
  slender 
  exter- 
  

   nally, 
  as 
  in 
  F. 
  orchesides. 
  

  

  B. 
  Tarsi 
  articulo 
  4 
  t0 
  breviter 
  lobato 
  ; 
  ungues 
  non 
  dentati. 
  

  

  3. 
  F. 
  badius, 
  fuscus, 
  elongatus, 
  helvo-pubescens, 
  capite 
  thoraceque 
  dense 
  subtilius 
  punctatis, 
  hoc 
  

   latitudine 
  longiore, 
  antrorsum 
  sub 
  angustato, 
  lateribus 
  vix 
  late 
  rotundatis, 
  angulis 
  posticis 
  productis 
  

   paulo 
  inflexis, 
  elytris 
  a 
  basi 
  vix 
  angustatis, 
  scabro-punctulatis, 
  tenuiter 
  striatis, 
  pedibus 
  antennisque 
  

   obscure 
  ferrugineis, 
  his 
  articulo 
  3 
  io 
  sequente 
  duplo-longiore, 
  versus 
  apicem 
  non 
  attenuatis. 
  Long. 
  "31. 
  

  

  Lee. 
  Proc. 
  Acad. 
  Nat. 
  Sc. 
  6, 
  47. 
  

  

  Dirhagus 
  badius 
  Melsheimer, 
  Proc. 
  Acad. 
  Nat. 
  Sc. 
  2, 
  140. 
  

  

  Dirhagus 
  rufipesf 
  Melsheimer, 
  Proc. 
  Acad. 
  Nat. 
  Sc. 
  2, 
  150. 
  

  

  Two 
  specimens 
  found 
  in 
  Pennsylvania: 
  the 
  second 
  joint 
  of 
  the 
  antennas 
  is 
  longer 
  than 
  

   the 
  two 
  preceding 
  species, 
  being 
  one-half 
  as 
  long 
  as 
  the 
  third: 
  the 
  fourth 
  joint 
  is 
  shorter 
  

   than 
  the 
  fifth, 
  which 
  is 
  equal 
  to 
  the 
  following: 
  the 
  third 
  joint 
  is 
  about 
  twice 
  as 
  long 
  as 
  

   the 
  second, 
  or 
  the 
  fourth. 
  The 
  antenna? 
  are 
  nearly 
  filiform, 
  not 
  being 
  attenuated 
  towards 
  

   the 
  tip, 
  as 
  in 
  F. 
  orchesides: 
  the 
  ungues 
  of 
  the 
  tarsi 
  are 
  dilated 
  at 
  base, 
  but 
  not 
  toothed: 
  

   the 
  margin 
  of 
  the 
  thorax 
  is 
  slightly 
  curved 
  inwards 
  at 
  the 
  posterior 
  angles, 
  while 
  in 
  the 
  

   preceding 
  species 
  it 
  is 
  straight 
  at 
  that 
  part. 
  One 
  specimen 
  has 
  the 
  front 
  indented 
  with 
  a 
  

   slight 
  longitudinal 
  fovea, 
  and 
  is 
  probably 
  Dirhagus 
  rufipes 
  Mcls. 
  

  

  