﻿OF 
  THE 
  UNITED 
  STATES. 
  473 
  

  

  cies. 
  The 
  posterior 
  angles 
  of 
  the 
  thorax 
  are 
  carinated, 
  with 
  the 
  carina 
  slightly 
  diverging 
  

   from 
  the 
  margin 
  : 
  the 
  basal 
  fissures 
  are 
  short 
  and 
  distinct. 
  

  

  1. 
  B. 
  c 
  a 
  lit 
  a, 
  subcylindrica, 
  castanea, 
  helvo-pubescens, 
  capite 
  thoraceque 
  contortitn 
  punctatis, 
  hoc 
  

   latitudine 
  paulo 
  longiore, 
  antrorsum 
  subangustato, 
  lateribus 
  rectis 
  apice 
  paulo 
  rotundatis, 
  elytris 
  striis 
  

   profundis 
  punctatis, 
  interstitiis 
  subconvexis 
  punctatis. 
  Long. 
  -55. 
  

  

  One 
  specimen, 
  Georgia. 
  The 
  sides 
  of 
  the 
  thorax 
  are 
  not 
  parallel, 
  but 
  converge 
  slightly 
  

   anteriorly: 
  the 
  posterior 
  angles 
  continue 
  the 
  line 
  of 
  the 
  sides; 
  they 
  are 
  straight 
  consider- 
  

   ably 
  in 
  front 
  of 
  the 
  middle, 
  then 
  slightly 
  rounded 
  to 
  the 
  apex. 
  

  

  Ckatonychus 
  Dcj. 
  Er. 
  

  

  1. 
  C. 
  corticinus, 
  linearis 
  elongatus, 
  parcius 
  longe 
  sordide 
  pilosus, 
  piccus, 
  fronte 
  concava, 
  tho- 
  

   race 
  latitudine 
  longiore, 
  antrorsum 
  paulo 
  angustato, 
  lateribus 
  rectis, 
  grosse 
  punctato, 
  parcius 
  in 
  medio, 
  

   postice 
  canaliculato, 
  angulis 
  posticis 
  productis 
  divergentibus, 
  elytris 
  parallelis, 
  striis 
  punctatis 
  vix 
  

   impressis, 
  interstitiis 
  rugose 
  punctulatis, 
  antenais 
  thorace 
  sesqui 
  longioribus, 
  (maris 
  sublanuginosis,) 
  

   articulis 
  2 
  et 
  3 
  subrequalibus. 
  Long. 
  '58. 
  

  

  Elatcr 
  corticinus 
  Say, 
  Journ. 
  Acad. 
  Nat. 
  Sc. 
  3, 
  174; 
  Trans. 
  Am. 
  Phil. 
  Soc. 
  G, 
  183. 
  

  

  One 
  specimen, 
  Georgia. 
  The 
  sides 
  of 
  the 
  thorax 
  are 
  scarcely 
  rounded 
  at 
  the 
  anterior 
  

   angles: 
  the 
  divergence 
  of 
  the 
  posterior 
  angles 
  causes 
  them 
  to 
  appear 
  slightly 
  concave 
  : 
  

   the 
  carina 
  is 
  about 
  one-third 
  the 
  length 
  of 
  the 
  thorax 
  and 
  very 
  near 
  to 
  the 
  margin. 
  

  

  2. 
  C. 
  longulus, 
  linearis 
  elongatus, 
  piceo-niger 
  grisco-pubescens, 
  fronte 
  concava, 
  thorace 
  latitu- 
  

   dine 
  longiore, 
  antrorsum 
  paulo 
  angustato, 
  lateribus 
  rectis 
  apice 
  subrotundatis, 
  grosse 
  punctato, 
  parcius 
  

   in 
  medio, 
  angulis 
  posticis 
  divergentibus, 
  postice 
  canaliculato, 
  elytris 
  parallelis, 
  striis 
  punctatis 
  baud 
  vel 
  

   vix 
  impressis, 
  interstitiis 
  parce 
  punctulatis, 
  pedibus 
  rufis, 
  antennis, 
  (maris 
  lanuginosis,) 
  articulo 
  3 
  io 
  se- 
  

   cundo 
  sesqui 
  longiore. 
  Long. 
  - 
  4. 
  

  

  -Four 
  specimens, 
  San 
  Diego, 
  California, 
  all 
  of 
  which 
  appear 
  to 
  be 
  males: 
  the 
  antennae 
  

   are 
  not 
  much 
  longer 
  than 
  the 
  head 
  and 
  thorax, 
  and 
  are 
  somewhat 
  strongly 
  serrate. 
  

  

  Found 
  with 
  them 
  was 
  a 
  single 
  female, 
  having 
  a 
  complete 
  resemblance 
  in 
  the 
  form 
  and 
  

   sculpture 
  of 
  every 
  portion 
  of 
  the 
  body, 
  except 
  the 
  thorax, 
  which 
  is 
  brownish 
  red, 
  with 
  the 
  

   sides 
  straight 
  as 
  far 
  as 
  the 
  middle, 
  then 
  broadly 
  rounded 
  to 
  the 
  apex: 
  the 
  posterior 
  angles 
  

   are 
  hardly 
  divergent: 
  the 
  antennae 
  are 
  formed 
  as 
  in 
  the 
  male, 
  and 
  finely 
  pubescent. 
  

  

  3. 
  C. 
  m 
  a 
  c 
  e 
  r 
  , 
  elongatus 
  fere 
  linearis, 
  testaceus, 
  vel 
  fuscus, 
  longius 
  pubescens, 
  fronte 
  concava, 
  tho- 
  

   race 
  latitudine 
  longiore, 
  antrorsum 
  angustato, 
  lateribus 
  fere 
  rectis, 
  sat 
  grosse 
  punctato, 
  parcius 
  in 
  

   disco, 
  postice 
  canaliculato, 
  angulis 
  posticis 
  non 
  divergentibus, 
  elytris 
  a 
  basi 
  subangustatis, 
  striis 
  punc- 
  

   tatis, 
  leviter 
  impressis, 
  interstitiis 
  punctis 
  paucis 
  notatis, 
  antennis 
  pubescentibus 
  thorace 
  sesqui 
  longi- 
  

   oribus, 
  articulo 
  3'" 
  2" 
  do 
  sesqui 
  longiore. 
  Long. 
  -43. 
  

  

  Georgia 
  and 
  New 
  York. 
  Easily 
  distinguished 
  by 
  its 
  very 
  narrow 
  body, 
  not 
  entirely 
  

   linear 
  as 
  in 
  the 
  preceding, 
  nor 
  as 
  strongly 
  lanceolate 
  as 
  in 
  the 
  following. 
  

  

  4. 
  C. 
  cuneatus, 
  modice 
  lanceolatus, 
  fusco-piceus, 
  densius 
  fusco-pubescens, 
  fronte 
  concava, 
  tho- 
  

   race 
  latitudine 
  subbreviore, 
  antrorsum 
  angustato, 
  lateribus 
  late 
  vix 
  rotundatis, 
  disco 
  minus 
  dense 
  sat 
  

   grosse 
  punctato, 
  linea 
  dorsali 
  lsevi 
  antice 
  obsoleta, 
  elytris 
  a 
  basi 
  angustatis, 
  striis 
  punctatis 
  subim- 
  

   pressis, 
  interstitiis 
  disperse 
  punctulatis, 
  antennis 
  (maris 
  lanuginosis) 
  thorace 
  sesqui 
  longioribus, 
  articulo 
  

   3 
  io 
  2 
  nd0 
  duplo 
  maiore. 
  Long. 
  -62. 
  

  

  