﻿498 
  REVISION 
  OF 
  THE 
  BLATERID.E 
  

  

  5. 
  C. 
  tumidicollis, 
  nigerrimus 
  obesus, 
  tenuissime 
  cinereo-pubescens, 
  thorace 
  transverso, 
  tumido, 
  

   antrorsum 
  angustato, 
  Iateribus 
  valde 
  rotundatis, 
  angulis 
  posticis 
  non 
  divergentibus, 
  subtilissime 
  punctu- 
  

   lato, 
  obsolete 
  canaliculato, 
  elytris 
  striis 
  punctatis, 
  postice 
  non 
  exaratis. 
  Long. 
  -25. 
  

  

  One 
  specimen, 
  collected 
  in 
  Oregon 
  by 
  Dr. 
  J. 
  K. 
  Townsend, 
  and 
  given 
  me 
  by 
  Mr. 
  Wil- 
  

   cox. 
  Resembles 
  the 
  next, 
  but 
  is 
  a 
  much 
  thicker 
  species, 
  with 
  a 
  more 
  tumid 
  thorax. 
  Co- 
  

   lour 
  deep 
  black, 
  sprinkled 
  with 
  very 
  fine 
  whitish 
  hairs: 
  front 
  very 
  finely 
  punctulate; 
  mar- 
  

   gin 
  slightly 
  reflexed 
  : 
  thorax 
  at 
  its 
  greatest 
  breadth 
  nearly 
  one-half 
  wider 
  than 
  long, 
  strongly 
  

   narrowed 
  in 
  front, 
  and 
  very 
  much 
  rounded 
  on 
  the 
  sides, 
  gradually 
  narrowed 
  for 
  the 
  pos- 
  

   terior 
  third, 
  with 
  the 
  sides 
  straight 
  near 
  the 
  base: 
  disc 
  convex, 
  very 
  finely, 
  almost 
  imper- 
  

   ceptibly 
  punctulate, 
  obsoletely 
  channelled 
  : 
  basal 
  stria? 
  moderately 
  short, 
  deep: 
  elytra 
  about 
  

   twice 
  as 
  long 
  as 
  wide, 
  not 
  wider 
  than 
  the 
  widest 
  part 
  of 
  the 
  thorax, 
  oval, 
  slightly 
  pointed 
  

   behind: 
  striae 
  finely 
  punctured, 
  not 
  deeper 
  posteriorly: 
  interstices 
  flat, 
  scarcely 
  perceptibly 
  

   punctulate: 
  feet 
  black; 
  claws 
  diaphanous. 
  

  

  This 
  species 
  is 
  perhaps 
  related 
  to 
  C. 
  lat 
  i 
  u 
  scu 
  lus 
  Esch. 
  (Thon 
  Ent. 
  Arch. 
  2, 
  34,) 
  

   but 
  the 
  pubescence 
  of 
  the 
  thorax 
  is 
  not 
  fuscous, 
  nor 
  are 
  the 
  knees 
  ferruginous, 
  as 
  is 
  re- 
  

   quired 
  by 
  the 
  description 
  of 
  that 
  species. 
  

  

  G. 
  C. 
  c 
  onvexulus, 
  niger, 
  nitidus, 
  tenuiter 
  cinereo-pubescens, 
  thorace 
  latitudine 
  breviore, 
  tu- 
  

   mido, 
  antice 
  valde 
  angustato, 
  postice 
  paruni 
  angustato, 
  Iateribus 
  rotundatis, 
  angulis 
  posticis 
  non 
  diver- 
  

   gentibus, 
  subtilissime 
  punctulato, 
  elytris 
  striis 
  punctatis, 
  interstitiis 
  dense 
  punctulatis, 
  subconvexis 
  

   6 
  to 
  et 
  8 
  vo 
  paulo 
  elevatis, 
  tibiis 
  versus 
  apicem, 
  tarsisque 
  rufescentibus. 
  Long. 
  -35. 
  

  

  Maine 
  and 
  Ohio, 
  sent 
  by 
  Dr. 
  Harris 
  under 
  the 
  name 
  adopted. 
  Similar 
  to 
  the 
  next 
  spe- 
  

   cies, 
  but 
  larger 
  and 
  more 
  robust, 
  with 
  a 
  much 
  shorter 
  thorax. 
  The 
  thorax 
  is 
  considerably 
  

   less 
  narrowed 
  at 
  the 
  base 
  than 
  at 
  the 
  apex: 
  the 
  dorsal 
  channel 
  is 
  very 
  faint 
  and 
  short: 
  the 
  

   basal 
  lines 
  are 
  short 
  and 
  well 
  defined: 
  the 
  antenna? 
  are 
  entirely 
  black, 
  and 
  a 
  little 
  longer 
  

   than 
  the 
  head 
  and 
  thorax 
  : 
  the 
  clypeus 
  is 
  more 
  deeply 
  concave 
  than 
  in 
  C. 
  gagates. 
  

  

  7. 
  C. 
  g 
  a 
  g 
  a 
  t 
  e 
  s 
  , 
  nigerrimus, 
  tenuiter 
  cinereo-pubescens, 
  thorace 
  latitudine 
  sublo'ngiore, 
  tumido, 
  

   Iateribus 
  rotundatis, 
  angulis 
  posticis 
  divergentibus, 
  dense 
  subtiliter 
  punctulato, 
  basi 
  breviter 
  canalicu- 
  

   lato, 
  elytris 
  striis 
  punctatis, 
  interstitiis 
  paulo 
  convexis, 
  dense 
  subtiliter 
  punctulatis. 
  Long. 
  -24 
  — 
  -28. 
  

  

  Erich. 
  Germ. 
  Zeitschr. 
  2, 
  297. 
  

  

  Southern 
  States, 
  not 
  rare. 
  A 
  specimen 
  in 
  Dr. 
  Harris' 
  collection 
  is 
  named 
  C. 
  convexus 
  

   Say, 
  but 
  as 
  the 
  antenna? 
  are 
  black, 
  it 
  can 
  by 
  no 
  means 
  be 
  referred 
  to 
  that 
  species. 
  

  

  8. 
  C. 
  tenebrosus, 
  plumbeo-niger, 
  nitidus 
  longiusculus, 
  fusco 
  subtiliter 
  pubescens, 
  thorace 
  lati- 
  

   tudine 
  sublongiore, 
  convexo, 
  Iateribus 
  rotundatis, 
  dense 
  subtiliter 
  punctulato, 
  obsolete 
  canaliculato, 
  

   angulis 
  posticis 
  subdivergentibus, 
  elytris 
  dense 
  punctulatis, 
  striis 
  punctatis, 
  interstitiis 
  leviter 
  convexis, 
  

   genubus 
  feinorumque 
  basi 
  rufo-piceis. 
  Long. 
  - 
  28 
  — 
  -32. 
  

  

  San 
  Francisco, 
  California. 
  Nearly 
  of 
  the 
  same 
  form 
  as 
  the 
  preceding, 
  but 
  with 
  a 
  less 
  

   tumid 
  thorax: 
  the 
  basal 
  stria? 
  of 
  the 
  thorax 
  are 
  a 
  little 
  longer: 
  the 
  rufous 
  colour 
  of 
  the 
  

   knees 
  and 
  trochanters 
  is 
  sometimes 
  hardly 
  perceptible. 
  

  

  9. 
  C. 
  obscurus, 
  plumbeo-niger, 
  opacus, 
  dense 
  fusco-pubescens, 
  thorace 
  latitudine 
  non 
  longiore, 
  

   Iateribus 
  valde 
  rotundato, 
  convexo, 
  confertissime 
  subtilius 
  punctato, 
  postice 
  subcanaliculato, 
  angulis 
  

   posticis 
  divergentibus, 
  elytris 
  dorso 
  subdepressis, 
  striis 
  punctatis, 
  postice 
  minus 
  distinctis, 
  interstitiis 
  

   planis, 
  dense 
  punctulatis. 
  Long. 
  -25. 
  

  

  