﻿456 
  REVISION 
  OF 
  THE 
  ELATERIDJ! 
  

  

  punctatis, 
  hoc 
  latitudine 
  vix 
  brcviore, 
  lateribus 
  parallelis 
  antice 
  rotundatis, 
  angulis 
  posticis 
  subdivc- 
  

   gcntibus, 
  elytris 
  Btriis 
  profundis 
  punctatis, 
  intcrstitiis 
  planiusculis, 
  rugose 
  punctatis, 
  antcnnis 
  pedi- 
  

   busquc 
  rufis. 
  Long 
  -3 
  — 
  "35. 
  

  

  Elater 
  maneus 
  Say, 
  Journ. 
  Acad. 
  Nat. 
  Sc. 
  3, 
  171; 
  Trans. 
  Am. 
  Phil. 
  Soc. 
  6, 
  168. 
  

  

  ? 
  Mater 
  olesus 
  Say, 
  Journ. 
  Acad. 
  Nat. 
  Sc. 
  3, 
  168; 
  Trans. 
  Am. 
  Phil. 
  Soc. 
  6, 
  168. 
  

  

  Elater 
  [Agriotes) 
  obesu8% 
  Harris, 
  Ins. 
  Massachusetts, 
  Injurious 
  to 
  Vegetation, 
  2d 
  ed. 
  p. 
  49. 
  

  

  Agriotes 
  truncatus 
  Mclsheimer, 
  Proc. 
  Acad. 
  Nat. 
  Sc. 
  2, 
  '217. 
  

  

  Agriotes 
  striatulus 
  Melsheimer, 
  Proc. 
  Acad. 
  Nat. 
  Sc. 
  2, 
  217. 
  

  

  Lake 
  Superior 
  and 
  throughout 
  the 
  Atlantic 
  portion 
  of 
  the 
  United 
  States. 
  A 
  specimen 
  

   \\;is 
  communicated 
  to 
  me 
  by 
  Dr. 
  Harris 
  as 
  Elater 
  ohcs/is 
  Say: 
  the 
  remarks 
  under 
  that 
  spe- 
  

   cies 
  in 
  the 
  Transactions 
  of 
  this 
  Society 
  are 
  as 
  follows: 
  "The 
  clypeus 
  is 
  not 
  prominent 
  and 
  

   the 
  thoracic 
  spines 
  are 
  not 
  carinated; 
  the 
  elytra 
  in 
  one 
  specimen 
  are 
  acuminated 
  at 
  the 
  

   tip: 
  the 
  nails 
  are 
  very 
  robust 
  on 
  the 
  basal 
  half, 
  which 
  terminates 
  at 
  the 
  middle 
  in 
  a 
  pro- 
  

   minent 
  tooth, 
  separated 
  by 
  a 
  deep 
  fissure." 
  Now 
  in 
  the 
  present 
  species, 
  as 
  in 
  all 
  others 
  

   arranged 
  under 
  this 
  genus, 
  the 
  spines 
  of 
  the 
  thorax 
  are 
  strongly 
  carinated, 
  and 
  the 
  ungues 
  

   are 
  not 
  toothed. 
  For 
  these 
  reasons 
  I 
  cannot 
  adopt 
  Dr. 
  Harris' 
  view 
  regarding 
  this 
  spe- 
  

   cies, 
  which 
  appears 
  to 
  me 
  to 
  agree 
  more 
  nearly 
  with 
  Say's 
  El. 
  maneus. 
  The 
  basal 
  fissure 
  

   of 
  the 
  thorax 
  is 
  more 
  distinct 
  than 
  in 
  the 
  other 
  species, 
  in 
  all 
  of 
  which 
  it 
  is 
  almost 
  wanting. 
  

  

  B.— 
  1. 
  

  

  2. 
  D. 
  oblongicollis, 
  valde 
  elongatus, 
  fusco-niger, 
  pubescens, 
  thorace 
  latitudine 
  plus 
  sesqui 
  

   longiore, 
  lateribus 
  parallelis, 
  antice 
  paulo 
  rotundatis, 
  confertim 
  punctato, 
  elytris 
  striis 
  punctatis, 
  in- 
  

   terstitiis 
  sat 
  dense 
  punctatis, 
  antennis 
  piceis, 
  articulis 
  2 
  et 
  3 
  coniunctis 
  4 
  t0 
  fere 
  brevioribus, 
  pedibus 
  

   testaceis. 
  Long. 
  -31 
  — 
  '35. 
  

  

  Melsheimer, 
  Proc. 
  Acad. 
  Nat. 
  Sc. 
  2, 
  218. 
  

  

  Middle 
  States, 
  not 
  rare. 
  The 
  anterior 
  margin 
  of 
  the 
  thorax 
  is 
  sometimes 
  testaceous. 
  

  

  3. 
  D. 
  i 
  s 
  ab 
  ell 
  i 
  n 
  u 
  s 
  , 
  valde 
  elongatus, 
  luteo-testaceus, 
  pubescens, 
  capite 
  antennisque 
  fuscis, 
  tho- 
  

   race 
  latitudine 
  sesqui 
  longiore, 
  lateribus 
  parallelis, 
  antice 
  paulo 
  rotundatis, 
  minus 
  subtiliter 
  punctato, 
  

   elytris 
  striis 
  punctatis, 
  intcrstitiis 
  sat 
  dense 
  punctatis, 
  antennis 
  articulis 
  2 
  et 
  3 
  coniunctis 
  4'° 
  fere 
  bre- 
  

   vioribus. 
  Long. 
  -37. 
  

  

  Melsheimer, 
  Proc. 
  Acad. 
  Nat. 
  Sc. 
  2, 
  218. 
  

  

  Pennsylvania. 
  I 
  have 
  seen 
  only 
  the 
  typical 
  specimen 
  in 
  Dr. 
  Melsheimer's 
  collection. 
  

   It 
  differs 
  from 
  the 
  preceding 
  only 
  by 
  the 
  coarser 
  and 
  less 
  dense 
  punctuation 
  of 
  the 
  thorax. 
  

  

  B.—2*. 
  

  

  4. 
  D. 
  c 
  ol 
  1 
  ar 
  is 
  , 
  niger, 
  pubescens, 
  thorace 
  latitudine 
  longiore, 
  postice 
  subcanaliculato, 
  lateribus 
  

   parallelis, 
  antice 
  rotundatis, 
  confertim 
  minus 
  subtiliter 
  punctato, 
  lateribus 
  late 
  rufis, 
  angulis 
  posticis 
  

   elongatis, 
  elytris 
  testaceis, 
  striis 
  subtilius 
  punctatis, 
  interstitiis 
  minus 
  dense 
  punctulatis, 
  antennis 
  pe- 
  

   dibusque 
  rufo-testaceis. 
  Long. 
  -49. 
  

  

  Two 
  specimens, 
  Vermont, 
  Prof. 
  C. 
  B. 
  Adams. 
  Size 
  and 
  form 
  of 
  the 
  next 
  species, 
  and, 
  

   apart 
  from 
  colour, 
  only 
  distinguished 
  from 
  it 
  by 
  the 
  less 
  densely 
  punetuiate 
  elytra. 
  

  

  5. 
  D. 
  fucosus, 
  ater, 
  opacus, 
  pubescens, 
  thorace 
  latitudine 
  longiore 
  postice 
  subcanaliculato, 
  la- 
  

   teribus 
  parallelis, 
  antice 
  rotundatis, 
  confertim 
  minus 
  subtiliter 
  punctato, 
  lateribus 
  scepissime 
  late 
  ob- 
  

  

  