﻿OP 
  THE 
  UNITED 
  STATES. 
  453 
  

  

  •12. 
  A. 
  planatus, 
  piceus, 
  helvo-pubescens, 
  thorace 
  latitudine 
  longiore, 
  lateribus 
  antice 
  late 
  ro- 
  

   tundatis, 
  confertim 
  punctato, 
  angulis 
  posticis 
  paulo 
  productis, 
  non 
  divergentibus, 
  apice 
  rotundatis, 
  

   elytris 
  striis 
  profundis, 
  antice 
  paulo 
  punctatis, 
  intcrstitiis 
  omnino 
  planis 
  parce 
  punctulatis, 
  subtus 
  

   rufo-piceus, 
  pedibus 
  pallidioribus, 
  antennis 
  articulo 
  ultimo 
  non 
  constricto. 
  Long. 
  "60. 
  

  

  One 
  specimen, 
  New 
  Jersey, 
  Mr. 
  Guex. 
  This 
  species 
  precisely 
  resembles 
  in 
  form 
  A. 
  

   consentaneus, 
  and 
  only 
  differs 
  by 
  the 
  angles 
  of 
  the 
  thorax 
  being 
  still 
  more 
  rounded, 
  and 
  

   the 
  stria? 
  of 
  the 
  elytra 
  being 
  less 
  punctured, 
  with 
  entirely 
  flat 
  interstices; 
  the 
  last 
  joint 
  of 
  

   the 
  antenna? 
  does 
  not 
  appear 
  constricted. 
  

  

  13. 
  A. 
  cavifrons, 
  rufo-testaceus, 
  paulo 
  pubescens, 
  thorace 
  latitndine 
  longiore, 
  lateribus 
  paral- 
  

   lelis, 
  antice 
  vix 
  rotundatis, 
  confertim 
  punctato, 
  angulis 
  posticis 
  modice 
  productis, 
  acutis, 
  elytris 
  striis 
  

   punctatis, 
  interstitiis 
  paulo 
  convexis 
  parce 
  subtiliter 
  punctatis, 
  antennis 
  articulo 
  ultimo 
  constricto. 
  

   Long. 
  '5. 
  

  

  Athoas 
  cavifrons 
  Melsbeimer, 
  Proc. 
  Acad. 
  Nat. 
  Sc. 
  2, 
  154. 
  

  

  Pennsylvania 
  and 
  Georgia. 
  The 
  thorax 
  of 
  the 
  female 
  is 
  a 
  little 
  more 
  convex 
  than 
  that 
  

   of 
  the 
  male, 
  and 
  the 
  sides 
  converge 
  a 
  little 
  in 
  front. 
  The 
  clypeus 
  is 
  not 
  more 
  concave 
  

   than 
  in 
  the 
  other 
  species 
  of 
  this 
  division, 
  from 
  all 
  of 
  which 
  it 
  is 
  easily 
  distinguished 
  by 
  its 
  

   smaller 
  size 
  and 
  less 
  densely 
  pubescent 
  body, 
  as 
  well 
  as 
  by 
  its 
  brighter 
  colour. 
  

  

  Crigmus 
  Lee. 
  

  

  Frons 
  parum 
  convexa, 
  antice 
  depressa, 
  non 
  marginata, 
  margine 
  laterali 
  obliqua, 
  ad 
  apicem 
  extensa: 
  

   fossulte 
  antennales 
  distantes, 
  bene 
  definite: 
  labrum 
  antice 
  rotundatum, 
  mandibula; 
  apice 
  acute, 
  eden- 
  

   tate: 
  antenna; 
  valde 
  serrate, 
  articulo 
  1™° 
  mediocri 
  subconico, 
  2 
  et 
  3 
  parvis, 
  sequalibus, 
  4 
  — 
  10 
  cequa- 
  

   libus 
  triangularibus, 
  ll 
  mo 
  valde 
  constricto, 
  fere 
  diviso: 
  palpi 
  articulo 
  ultimo 
  triangulari, 
  acuto: 
  pres- 
  

   ternum 
  antice 
  lobatum, 
  postice 
  mucronatum, 
  mucrone 
  non 
  inflexo, 
  sutura 
  oblique 
  concava, 
  antice 
  non 
  

   excavata: 
  mesosternum 
  non 
  protuberans: 
  coxae 
  posticte 
  intus 
  fere 
  sensim 
  paulo 
  dilatate, 
  dente 
  in- 
  

   terno 
  magno 
  acuto: 
  tarsi 
  filiformes 
  pubescentes, 
  articulo 
  l 
  m0 
  sequentibus 
  duobus 
  coniunctis 
  cequali, 
  

   2 
  — 
  4 
  sensim 
  brevioribus, 
  5 
  t0 
  prcecedentibus 
  2 
  rcquali, 
  unguiculis 
  integris. 
  

  

  I 
  have 
  formed 
  this 
  genus 
  upon 
  Aphanobius 
  hepaticus 
  Germ., 
  which 
  appears 
  sufficiently 
  

   distinct 
  from 
  the 
  type 
  of 
  the 
  genus, 
  A. 
  i 
  n 
  f 
  u 
  s 
  c 
  a 
  t 
  u 
  s 
  , 
  on 
  account 
  of 
  the 
  declivous 
  meso- 
  

   sternum, 
  and 
  shorter 
  first 
  joint 
  of 
  the 
  antenna?. 
  The 
  tooth 
  at 
  the 
  internal 
  part 
  of 
  the 
  pos- 
  

   terior 
  coxa? 
  is 
  stronger 
  and 
  more 
  acute, 
  while 
  the 
  posterior 
  margin 
  of 
  the 
  plate 
  is 
  not 
  un- 
  

   dulated, 
  as 
  in 
  A. 
  infuscatus, 
  but 
  regularly 
  and 
  very 
  slightly 
  curved; 
  the 
  pubescence 
  of 
  the 
  

   tarsi 
  is 
  uniform, 
  without 
  any 
  tendency 
  to 
  form 
  brushes 
  as 
  in 
  A. 
  infuscatus. 
  The 
  external 
  

   resemblance 
  (barring 
  size) 
  is 
  very 
  great, 
  but 
  we 
  have 
  frequent 
  examples 
  in 
  this 
  family 
  of 
  

   close 
  external 
  resemblance 
  among 
  species 
  of 
  most 
  widely 
  distinct 
  genera. 
  With 
  regard 
  

   to 
  the 
  weight 
  of 
  the 
  character 
  derived 
  from 
  the 
  mesosternum, 
  that 
  will 
  become 
  evident, 
  I 
  

   think, 
  to 
  any 
  one 
  who 
  will 
  observe 
  the 
  constancy 
  of 
  the 
  protuberant 
  form, 
  through 
  a 
  large 
  

   group 
  of 
  species, 
  which 
  carry 
  in 
  their 
  appearance 
  the 
  evidence 
  of 
  the 
  distinctness 
  of 
  their 
  

   type. 
  Adopting 
  such 
  a 
  principle 
  of 
  division, 
  Aphanobius 
  infuscatus 
  will 
  then 
  form 
  the 
  

   osculant 
  of 
  the 
  group 
  with 
  protuberant 
  mesosternum 
  with 
  the 
  present 
  genus. 
  

  

  1. 
  C. 
  hepaticus, 
  obscure 
  castaneus, 
  dense 
  longius 
  helvo-pubescens, 
  thorace 
  latitudine 
  longiore 
  

   confertim 
  punctato, 
  subcylindrico, 
  lateribus 
  antice 
  paulo 
  rotundatis, 
  elytris 
  fastigiatis, 
  apice 
  muticis, 
  

   striis 
  punctatis 
  interstitiis 
  confertim 
  punctatis 
  et 
  rugosis, 
  pedibus 
  antennisque 
  rufis. 
  Long. 
  'G 
  — 
  - 
  74. 
  

  

  Elater 
  hepaticus 
  Germar, 
  Ins. 
  Nov. 
  43. 
  

  

  Aplianobius 
  hepaticus 
  Germar, 
  Zeitschr. 
  5, 
  184. 
  

  

  