﻿OF 
  THE 
  UNITED 
  STATES. 
  461 
  

  

  1. 
  B. 
  bicarinatus, 
  elongatus, 
  fusco-castancus, 
  helvo-pubescens, 
  thorace 
  Iatitudine 
  longiore, 
  an- 
  

   trorsum 
  angustato, 
  latcribus 
  late 
  rotundatis, 
  subtilius 
  punctato, 
  angulis 
  posticis 
  acutis, 
  bicarinatis, 
  

   elytris 
  striis 
  punctatis, 
  interstitiis 
  rugose 
  punctatis, 
  abdouiinc 
  rufescente, 
  pedibus 
  antennisque 
  rufo- 
  

   testaceis. 
  Long. 
  - 
  31. 
  

  

  One 
  specimen, 
  Georgia. 
  The 
  stria; 
  of 
  the 
  elytra 
  are 
  well 
  impressed; 
  it 
  resembles 
  in 
  

   appearance 
  a 
  small 
  specimen 
  of 
  Dicrepidius 
  soleatus, 
  but 
  is 
  at 
  once 
  known 
  by 
  its 
  finely 
  

   punctured 
  thorax. 
  * 
  

  

  Dicrepidius 
  Esch. 
  (emend.) 
  

  

  Frons 
  modice 
  convexa, 
  antice 
  producta, 
  et 
  rotundatim 
  marginnta, 
  sa>po 
  ad 
  apiccm 
  bicristata: 
  

   rnandibula; 
  emarginata;, 
  basi 
  triangulariter 
  subdilatataa:- 
  labrum 
  antice 
  rotundatum: 
  antenna; 
  plus 
  

   minus 
  serrata;, 
  maris 
  nonnunquam 
  ramosi, 
  articulo 
  8'° 
  4 
  to 
  sequali, 
  11""' 
  non 
  constricto: 
  prosternum 
  

   antice 
  breviter 
  lobatum, 
  mucronc 
  postico 
  paulo 
  inficxo, 
  sutura 
  latcrali 
  antice 
  excavata, 
  paulo 
  conca- 
  

   va: 
  mesostei-num 
  non 
  protuberans: 
  coxa; 
  postiea; 
  laminis 
  intus 
  subsubito 
  inodicc 
  dilatatis, 
  postice 
  

   emarginatis, 
  dente 
  interno 
  forti, 
  acuto: 
  tarsi 
  pubescentes, 
  articulo 
  l 
  mo 
  sequentibus 
  2 
  requali, 
  2 
  et 
  3 
  

   subtus 
  lobatis, 
  4 
  1 
  *' 
  parvo 
  recepto, 
  •">'" 
  unguiculis 
  integris, 
  maiusculis. 
  

  

  I 
  have 
  modified 
  the 
  diagnosis 
  of 
  this 
  genus, 
  as 
  given 
  by 
  Germar, 
  to 
  allow 
  the 
  introduc- 
  

   tion 
  of 
  several 
  species, 
  which 
  seem 
  to 
  differ 
  from 
  the 
  type 
  only 
  in 
  the 
  absence 
  of 
  the 
  two 
  

   acute 
  perpendicular 
  ridges 
  which 
  run 
  from 
  the 
  margin 
  of 
  the 
  front 
  to 
  the 
  base 
  of 
  the 
  la- 
  

   brum, 
  and 
  limit 
  the 
  fovea? 
  in 
  which 
  the 
  antenna; 
  are 
  inserted. 
  From 
  the 
  two 
  preceding 
  

   genera, 
  this 
  differs 
  in 
  the 
  form 
  of 
  the 
  laminae 
  of 
  the 
  posterior 
  coxae, 
  which 
  are 
  emarginate, 
  

   or 
  sinuate 
  posteriorly, 
  as 
  in 
  Elater. 
  The 
  posterior 
  angles 
  of 
  the 
  thorax 
  are 
  long 
  and 
  

   sharp, 
  the 
  carina 
  is 
  well 
  defined 
  rnd 
  almost 
  parallel 
  with 
  the 
  margin; 
  the 
  basal 
  fissures 
  

   are 
  short 
  and 
  distinct. 
  

  

  A. 
  Frons 
  antice 
  bicristata. 
  

  

  1. 
  D. 
  rami 
  corn 
  is, 
  piceo-rufus, 
  belvo-pubescens, 
  thorace 
  minus 
  subtiliter 
  parce 
  punctato, 
  Iatitu- 
  

   dine 
  longiore, 
  lateribus 
  parallelis, 
  antice 
  paulo 
  rotundatis, 
  linea 
  dorsali 
  la;vi 
  vix 
  distincta, 
  elytris 
  pos- 
  

   tice 
  angustatis, 
  striis 
  minus 
  impressis 
  antice 
  fortiter 
  punctatis, 
  interstitiis 
  parce 
  subtiliter 
  punctulatis. 
  

   Long. 
  -55. 
  

  

  Germar, 
  Zeitschr. 
  1, 
  214. 
  

  

  Elater 
  ramicornis 
  Beauv. 
  Ins. 
  p. 
  10, 
  tab. 
  7, 
  fig. 
  3; 
  ibid. 
  214, 
  tab. 
  9, 
  fig. 
  7. 
  

  

  Southern 
  States, 
  rare; 
  more 
  abundant 
  in 
  Cuba 
  and 
  South 
  America. 
  In 
  the 
  male 
  the 
  

   third 
  and 
  following 
  joints 
  of 
  the 
  antenna; 
  are 
  furnished 
  with 
  a 
  subapical, 
  elongate, 
  spatulate 
  

   process; 
  the 
  eleventh 
  joint 
  extends 
  beyond 
  the 
  branch 
  of 
  the 
  tenth 
  joint; 
  in 
  the 
  female 
  

   the 
  joints 
  are 
  triangular, 
  growing 
  gradually 
  narrower, 
  with 
  the 
  last 
  joint 
  one-half 
  longer 
  

   than 
  the 
  tenth. 
  

  

  2. 
  D.? 
  binus, 
  niger, 
  helvo-pubescens, 
  thorace 
  Iatitudine 
  longiore, 
  antrorsum 
  subangustato, 
  lateri- 
  

   bus 
  fere 
  rectis, 
  antice 
  paulo 
  rotundatis, 
  subtilius 
  punctato, 
  densius 
  ad 
  latera, 
  angulis 
  posticis 
  acutis, 
  

   carina 
  angulari 
  valde 
  elongata, 
  margini 
  parallela, 
  elytris 
  striis 
  profundis 
  punctulatis, 
  interstitiis 
  con- 
  

   fertiui 
  rugose 
  punctatis, 
  macula 
  magna 
  utrinque 
  basali, 
  alteraque 
  versus 
  apicem 
  laste 
  rufo-testaceis, 
  

   antennis 
  pedibusque 
  testaceis. 
  Long. 
  "29. 
  

  

  Elater 
  binus 
  Say, 
  Trans. 
  Am. 
  Phil. 
  Soc. 
  6, 
  178. 
  

  

  One 
  specimen, 
  Georgia. 
  As 
  the 
  tarsi 
  and 
  posterior 
  coxa? 
  of 
  my 
  specimen 
  are 
  in 
  bad 
  

   condition, 
  I 
  am 
  not. 
  absolutely 
  certain 
  that 
  it 
  belongs 
  to 
  this 
  genus; 
  the 
  two 
  crests 
  of 
  the 
  

  

  