﻿OF 
  THli 
  UxMITUD 
  STATES. 
  443 
  

  

  especially 
  at 
  the 
  sides, 
  with 
  a 
  hardly 
  perceptible 
  smooth 
  not 
  impressed 
  dorsal 
  line; 
  sides 
  

   broadly 
  rounded, 
  posterior 
  angles 
  short, 
  truncate, 
  slightly 
  divergent. 
  Elytra 
  not 
  wider 
  

   than 
  the 
  thorax, 
  very 
  slightly 
  obliquely 
  attenuated 
  behind 
  the 
  middle; 
  stria? 
  fine, 
  well 
  im- 
  

   pressed; 
  interstices 
  tolerably 
  densely, 
  finely 
  punctured. 
  Legs 
  and 
  antenna? 
  entirely 
  black; 
  

   the 
  latter 
  as 
  in 
  the 
  male 
  of 
  C. 
  appressifrons, 
  with 
  the 
  joints 
  triangular, 
  not 
  produced 
  at 
  

   the 
  angle; 
  the 
  third 
  joint 
  a 
  little 
  smaller 
  than 
  the 
  fourth; 
  the 
  eleventh 
  elongated, 
  deeply 
  

   constricted. 
  

  

  27. 
  C. 
  crib 
  r 
  os 
  us, 
  ater, 
  breviter 
  nigro-pubescens, 
  subparallelus, 
  fronte 
  concava, 
  thorace 
  latitudine 
  

   longiore, 
  lateribus 
  late 
  rotundato, 
  antrorsum 
  vix 
  angustato, 
  canaliculato, 
  grossius, 
  lateribus 
  dense 
  

   punctato, 
  angulis 
  posticis 
  acutis 
  subdivergentibus, 
  elytris 
  striis 
  punctulatis, 
  interstitiis 
  punctatis 
  et 
  

   rugosis, 
  fere 
  scabris. 
  Long. 
  *54. 
  

  

  California, 
  San 
  Francisco. 
  The 
  antenna? 
  are 
  much 
  more 
  strongly 
  serrate 
  than 
  in 
  any 
  

   of 
  the 
  preceding 
  species; 
  the 
  joints 
  are 
  decidedly 
  broader 
  than 
  long, 
  and 
  somewhat 
  pro- 
  

   duced 
  externally; 
  the 
  third 
  joint 
  is 
  smaller 
  than 
  the 
  fourth, 
  and 
  the 
  eleventh 
  is 
  constricted. 
  

   The 
  elytra 
  are 
  very 
  slightly 
  obliquely 
  attenuated 
  behind 
  the 
  middle. 
  

  

  28. 
  C. 
  sign 
  a 
  tic 
  o 
  His, 
  niger, 
  nitidus, 
  supra 
  glaber, 
  subparallelus, 
  fronte 
  concava, 
  thorace 
  latitu- 
  

   dine 
  longiore, 
  parce 
  grossius 
  punctato, 
  antrorsum 
  vix 
  angustato, 
  lateribus 
  late 
  rotundatis, 
  la?te 
  rufo, 
  

   vitta 
  dorsali 
  lata, 
  angulisque 
  posticis 
  divergentibus 
  nigris: 
  elytris 
  striis 
  punctatis 
  profundis, 
  intersti- 
  

   tiis 
  vix 
  punctulatis, 
  pedibus 
  piceis. 
  Long. 
  - 
  33. 
  

  

  Diacanthus? 
  signatieollis 
  Melsheimer, 
  Proc. 
  Acad. 
  Nat. 
  Sc. 
  2, 
  216. 
  

  

  Middle 
  and 
  Southern 
  States, 
  not 
  common. 
  The 
  antennas 
  of 
  this 
  species 
  are 
  very 
  

   strongly 
  serrate, 
  the 
  joints 
  not 
  transverse, 
  with 
  the 
  outer 
  angle 
  produced; 
  the 
  third 
  is 
  

   somewhat 
  smaller 
  than 
  the 
  fourth; 
  the 
  eleventh 
  constricted. 
  The 
  presternum 
  is 
  entirely 
  

   black, 
  the 
  indexed 
  portion 
  of 
  the 
  prothorax 
  is 
  red, 
  becoming 
  black 
  towards 
  the 
  sternum. 
  

  

  29. 
  C. 
  trivittatus, 
  ferrugineus, 
  cinereo-pubescens, 
  subparallelus, 
  capite 
  nigro, 
  concavo, 
  tborace 
  

   latitudine 
  sublongiore, 
  antrorsum 
  modice 
  angustato, 
  lateribus 
  rotundatis, 
  angulis 
  posticis 
  acutis 
  diver- 
  

   gentibus, 
  maculaque 
  magna 
  dorsali 
  nigris, 
  sat 
  dense 
  punctato, 
  leviter 
  canaliculato, 
  elytris 
  flavo-testa- 
  

   ceis, 
  sutura 
  vittaque 
  discoidali, 
  s»pe 
  ante 
  medium 
  interrupta 
  nigris, 
  striis 
  irregulariter, 
  interstitiis 
  

   vage 
  punctatis, 
  tarsis 
  piceis, 
  antennis 
  nigris 
  articulo 
  3'° 
  sequenti 
  multo 
  minore, 
  vix 
  triangulari. 
  Long. 
  

   •46— 
  -68. 
  

  

  Abundant 
  in 
  the 
  upper 
  portions 
  of 
  the 
  Southern 
  States; 
  sent 
  me 
  by 
  Zimmermann, 
  as 
  

   Pristilophus 
  3-vittatus 
  Germ. 
  MSS. 
  This 
  species 
  is 
  of 
  difficult 
  location, 
  but 
  from 
  its 
  con- 
  

   cave 
  front, 
  narrow 
  form, 
  and 
  strongly 
  serrate 
  antennae, 
  it 
  seems 
  most 
  naturally 
  placed 
  in 
  

   the 
  present 
  division, 
  forming 
  the 
  transition 
  from 
  those 
  having 
  the 
  third 
  joint 
  of 
  the 
  anten- 
  

   na? 
  dilated, 
  to 
  the 
  two 
  following, 
  in 
  which 
  it 
  is 
  almost 
  cylindrical. 
  The 
  pubescence 
  of 
  

   the 
  under 
  surface 
  is 
  silvery, 
  and 
  the 
  sutures 
  of 
  the 
  pectus 
  are 
  blackish; 
  the 
  last 
  joint 
  of 
  

   the 
  antenna? 
  is 
  strongly 
  constricted. 
  

  

  30. 
  C. 
  rethiops, 
  niger, 
  tenuissime 
  cinereo-pubescens, 
  subparallelus, 
  postice 
  inagis 
  angustatus, 
  

   fronte 
  concava, 
  tborace 
  latitudine 
  longiore 
  antrorsum 
  subangustato, 
  lateribus 
  late 
  rotundato, 
  canali- 
  

   culato, 
  punctato, 
  densius 
  ad 
  latera, 
  elytris 
  striis 
  punctatis, 
  interstitiis 
  vage 
  punctatis, 
  antennis 
  arti- 
  

   culo 
  3'° 
  sequenti 
  non 
  breviore, 
  vix 
  dilatato. 
  Long. 
  *53 
  — 
  "83. 
  

  

  Elate)- 
  xthiops 
  Ilerbst, 
  Kafer, 
  10, 
  70; 
  tab. 
  164, 
  fig. 
  4. 
  

   Pristilophus 
  eethiops 
  Germ. 
  Zeitscbr. 
  4, 
  86. 
  

  

  