﻿472 
  REVISION 
  OF 
  THE 
  ELATERIDjE 
  

  

  Lake 
  Superior. 
  It 
  is 
  difficult 
  to 
  determine 
  whether 
  this 
  should 
  not 
  he 
  considered 
  as 
  E. 
  

   semicinctus 
  Randall 
  (B. 
  Journ. 
  Nat. 
  Hist. 
  2, 
  10;) 
  hut 
  the 
  expression 
  "body 
  consider- 
  

   ably 
  dilated, 
  - 
  ' 
  coupled 
  with 
  the 
  observation 
  that 
  "it 
  seems 
  most 
  nearly 
  allied 
  to 
  E. 
  dis- 
  

   co 
  id*eus," 
  has 
  induced 
  me 
  to 
  refer 
  Randall's 
  description 
  to 
  No. 
  8 
  of 
  this 
  genus, 
  above 
  

   described. 
  The 
  thorax 
  in 
  this 
  species 
  is 
  less 
  narrowed 
  in 
  front 
  than 
  usual; 
  the 
  elytra 
  

   are 
  also 
  parallel 
  beyond 
  the 
  middle, 
  then 
  gradually 
  narrowed 
  to 
  the 
  tip. 
  

  

  36. 
  E. 
  stigmosus, 
  elongatus, 
  ater 
  cinereo-pubescens, 
  thorace 
  latitudine 
  longiore, 
  antrorsum 
  

   Bubangustato, 
  lateribua 
  anticc 
  subrotundatis, 
  sat 
  dense 
  punctato, 
  postice 
  obsolete 
  canaliculato, 
  elytris 
  

   macula 
  hamata 
  basali, 
  humerum 
  includente, 
  alteraque 
  utrinque 
  transversa 
  pone 
  medium 
  flavis: 
  striis 
  

   punctulatis 
  intcrstitiis 
  plains, 
  rugose 
  punctatis, 
  pedibus 
  antennarumque 
  ba.si 
  testaccis, 
  his 
  articulis 
  2 
  

   ct 
  •'! 
  aequalibus. 
  Long. 
  "21 
  — 
  - 
  25. 
  

  

  Lake 
  Superior, 
  two 
  specimens. 
  A 
  very 
  distinct 
  and 
  pretty 
  species; 
  the 
  yellow 
  spots 
  

   of 
  the 
  elytra 
  are 
  arranged 
  in 
  the 
  following 
  manner: 
  a 
  line 
  from 
  the 
  middle 
  of 
  the 
  base 
  

   follows 
  along 
  the 
  fourth 
  interstice 
  for 
  one-third 
  the 
  length 
  of 
  the 
  elytra; 
  it 
  there 
  meets 
  a 
  

   broader 
  line 
  running 
  obliquely 
  inwards 
  from 
  below 
  the 
  humerus, 
  and 
  slightly 
  dilated 
  along 
  

   the 
  margin; 
  the 
  posterior 
  spot 
  is 
  small, 
  and 
  situated 
  one-third 
  the 
  entire 
  length 
  of 
  the 
  

   elytra 
  from 
  the 
  apex; 
  in 
  the 
  second 
  specimen 
  the 
  hook 
  formed 
  by 
  the 
  junction 
  of 
  the 
  two 
  

   anterior 
  lines 
  is 
  imperfect, 
  and 
  the 
  posterior 
  spot 
  is 
  larger, 
  becoming 
  almost 
  round; 
  the 
  

   tibiae 
  and 
  tarsi 
  are 
  much 
  paler 
  than 
  the 
  femora. 
  The 
  second 
  and 
  third 
  joints 
  of 
  the 
  an- 
  

   tennas 
  together 
  are 
  not 
  longer 
  than 
  the 
  fourth. 
  

  

  37. 
  E. 
  rufilabris, 
  elongatus, 
  linearis, 
  nigro-piceus 
  fusco-pubescens, 
  thorace 
  latitudine 
  fore 
  ses- 
  

   qni 
  longiore, 
  antice 
  vix 
  angustato, 
  ad 
  apicem 
  paulo 
  rotundato, 
  punctato, 
  basi 
  lutea, 
  elytris 
  basi 
  an- 
  

   guste 
  luteis, 
  striis 
  punctulatis, 
  interstitiis 
  confertim 
  punctatis, 
  pedibus 
  flavo-testaceis, 
  antennis 
  elon- 
  

   gatis 
  piceis, 
  basi 
  testaceis, 
  articulis 
  2 
  et 
  3 
  aequalibus 
  4 
  t0 
  coniunctis 
  brevioribus. 
  Long. 
  *25 
  — 
  "32. 
  

  

  Germ. 
  Ins. 
  Nov. 
  47. 
  

  

  Ampedus 
  rufilabris 
  Germ. 
  Zeitschr. 
  5, 
  169. 
  

  

  Middle 
  and 
  Southern 
  States. 
  The 
  head 
  is 
  larger 
  than 
  usual, 
  although 
  there 
  is 
  not 
  a 
  

   great 
  deal 
  of 
  difference 
  in 
  form 
  between 
  this 
  and 
  the 
  two 
  preceding 
  species; 
  this 
  is, 
  how- 
  

   ever, 
  narrower 
  and 
  more 
  parallel. 
  The 
  outline 
  of 
  the 
  front 
  is 
  more 
  rounded 
  than 
  usual, 
  

   and 
  the 
  margin 
  is 
  slightly 
  rcflexed. 
  

  

  B 
  

  

  LAUTA 
  L.CC. 
  

  

  Frons 
  convexiuscula, 
  paulo 
  producta, 
  margine 
  rotundata, 
  non'impressa; 
  labrum 
  anticc 
  rotundatum; 
  

   antennas 
  scrrata?, 
  11-articulatse, 
  articulo 
  l 
  mo 
  mediocri, 
  2 
  et 
  3 
  parvis, 
  hoc 
  sesqui 
  maiore, 
  ll 
  mn 
  subcon- 
  

   Btricto: 
  prosternum 
  antice 
  lobatum, 
  mucrone 
  postico 
  leviter 
  inflexo, 
  sutura 
  obliqua, 
  subconcava, 
  usque 
  

   ad 
  medium 
  valde 
  exarata; 
  mesosternum 
  non 
  protuberans; 
  coxae 
  posticre 
  laminis 
  intus 
  sensim 
  et 
  mo- 
  

   dice 
  dilatatis, 
  margine 
  bisinuato, 
  dente 
  interno 
  magno, 
  acuto: 
  tarsi 
  pubescentes, 
  articulo 
  l 
  mo 
  sequen- 
  

   tibus 
  duobus 
  sequali, 
  2 
  — 
  4 
  sensim 
  brevioribus, 
  subtus 
  breviter 
  lobatis 
  et 
  spongiosis: 
  5 
  to 
  primo 
  requali, 
  

   unguiculis 
  simplicibus. 
  

  

  A 
  curious, 
  subcylindrical 
  insect, 
  which 
  I 
  am 
  very 
  much 
  disposed 
  to 
  consider 
  Ampedus 
  

   cribrarius 
  Germ. 
  (Zeitschr. 
  5, 
  178;) 
  but 
  as 
  it 
  has 
  the 
  thorax 
  a 
  little 
  longer 
  than 
  wide, 
  and 
  

   the 
  antennae 
  very 
  distinctly 
  serrate, 
  it 
  is 
  more 
  proper 
  to 
  retain 
  it 
  as 
  distinct 
  from 
  that 
  spe- 
  

  

  