﻿238 
  Mr. 
  H. 
  W. 
  Bates' 
  additions 
  to 
  the 
  

  

  Capite 
  et 
  thorace 
  cseruleis, 
  viridescenti-esenileis 
  vel 
  violaceis, 
  elytris 
  

   obscure 
  cserulescenti-nigris 
  ; 
  labro 
  late 
  sinnato 
  et 
  cajjite 
  sicut 
  in 
  

   C. 
  beato 
  miuutissime 
  punctulato. 
  Long. 
  12 
  — 
  14 
  millim., 
  S 
  $ 
  • 
  

  

  Hab. 
  Cordova, 
  in 
  Vera 
  Cruz 
  {Hoge). 
  

  

  This 
  resembles 
  C. 
  heatus 
  so 
  closely 
  in 
  the 
  form 
  of 
  the 
  

   thorax 
  and 
  other 
  characters, 
  that 
  it 
  may 
  be 
  only 
  a 
  local 
  

   modification 
  of 
  the 
  same 
  stock. 
  There 
  is, 
  however, 
  a 
  

   good 
  series 
  of 
  each 
  form, 
  and 
  the 
  peculiarities 
  are 
  con- 
  

   stant. 
  It 
  is 
  smaller, 
  and 
  the 
  elytra 
  especially 
  are 
  rela- 
  

   tively 
  shorter 
  and 
  more 
  rounded 
  on 
  the 
  sides, 
  so 
  that 
  

   they 
  may 
  be 
  described 
  as 
  oval 
  ; 
  whilst 
  in 
  C. 
  heatus 
  they 
  

   are 
  elongate 
  oblong-ovate. 
  The 
  punctuation 
  of 
  the 
  

   thorax 
  is 
  stronger, 
  and 
  on 
  the 
  disk 
  sparser. 
  The 
  epi- 
  

   pleurse 
  of 
  the 
  elytra 
  and 
  lateral 
  margins 
  of 
  the 
  thorax 
  

   are 
  deep 
  black. 
  

  

  Dercylus 
  (Dercylodes) 
  mexicanus. 
  

   D. 
  crenato 
  (Schaum.) 
  simillinms, 
  sed 
  certe 
  differt 
  elytris 
  humeris 
  

   angulatis 
  dentiferis 
  striisque 
  in 
  fiindo 
  solum 
  subtilissime 
  punctu- 
  

   latis. 
  Paullo 
  brevior 
  elytrisque 
  minus 
  convexis, 
  fere 
  parallelis 
  ; 
  

   capite 
  tlioraceque 
  haud 
  diversis, 
  elj'tris 
  profunde 
  striatis 
  inter- 
  

   stitiisque 
  valde 
  convexis 
  ; 
  subtus 
  laevis, 
  tibiis 
  rectis 
  ; 
  niger 
  sub- 
  

   nitidus 
  palpis 
  rufis. 
  Long. 
  14 
  millim. 
  

  

  Hob. 
  Tapachula, 
  in 
  Chiapas 
  {Hoge) 
  . 
  Two 
  examples. 
  

  

  The 
  species 
  belongs, 
  like 
  D. 
  crenatns, 
  to 
  Chaudoir's 
  

   generic 
  group 
  Dercylodes, 
  separated 
  from 
  Dercylus 
  chiefly 
  

   on 
  account 
  of 
  the 
  sexpunctate 
  labrum, 
  the 
  latter 
  group 
  

   having 
  only 
  two 
  punctures. 
  The 
  genus 
  is 
  Tropical 
  

   South 
  American, 
  this 
  being 
  the 
  first 
  species 
  recorded 
  

   from 
  north 
  of 
  the 
  Isthmus 
  of 
  Panama. 
  

  

  Diccelus 
  costatus, 
  Leconte, 
  Classif. 
  Carab. 
  U. 
  S., 
  p. 
  389 
  

   (1863) 
  ; 
  Journ. 
  Ac. 
  Nat. 
  Sci., 
  iv., 
  1, 
  t. 
  1, 
  f. 
  7. 
  

  

  Var. 
  Lerdoensis, 
  Villa 
  Lerdo, 
  in 
  Durango 
  {Hoge). 
  Two 
  

   male 
  examples, 
  differing 
  in 
  nothing 
  but 
  their 
  larger 
  size 
  

   (34 
  millim.), 
  and 
  the 
  somewhat 
  rounded 
  sides 
  of 
  the 
  

   thorax 
  at 
  the 
  anterior 
  part, 
  which 
  gives 
  a 
  less 
  trapezoidal 
  

   outline. 
  In 
  six 
  Texan 
  examples 
  of 
  D. 
  costatus, 
  received 
  

   from 
  Belfrage, 
  the 
  size 
  varies 
  from 
  26 
  — 
  28 
  millim. 
  

  

  An 
  addition 
  to 
  the 
  Mexican 
  fauna. 
  

  

  