﻿Carahideous 
  fauna 
  of 
  Mexico. 
  235 
  

  

  thorax, 
  and 
  the 
  two 
  marginal 
  interstices 
  of 
  the 
  elytra 
  

   green, 
  extends 
  through 
  Guatemala 
  and 
  Yucatan 
  to 
  

   Oaxaca 
  and 
  Chilpancingo, 
  on 
  the 
  Pacific 
  coast 
  of 
  Mexico. 
  

   The 
  var. 
  C. 
  ccsruleus 
  (Chaud.), 
  described 
  from 
  Puebia, 
  

   has 
  been 
  found 
  also 
  at 
  Cuernavaca 
  (but 
  the 
  examples 
  

   are 
  more 
  frequently 
  brilliant 
  green 
  than 
  blue 
  or 
  green, 
  

   with 
  blue 
  reflections 
  on 
  the 
  elytra) 
  by 
  Herr 
  H5ge, 
  

   who 
  has 
  also 
  brought 
  home 
  a 
  series 
  of 
  the 
  following 
  

   variety 
  : 
  — 
  

  

  Var. 
  C. 
  Guerreroensis. 
  — 
  Elytra 
  black, 
  but 
  clothed 
  with 
  

   a 
  more 
  tawny 
  pubescence, 
  which 
  gives 
  the 
  surface 
  a 
  

   brownish 
  tinge 
  ; 
  thorax 
  as 
  in 
  the 
  type, 
  brilliant 
  golden 
  

   coppery, 
  especially 
  on 
  the 
  convex 
  sides, 
  but 
  sometimes 
  

   green, 
  with 
  the 
  disk 
  black 
  or 
  wholly 
  green 
  ; 
  the 
  green 
  

   border 
  of 
  the 
  elytra 
  extending, 
  especially 
  towards 
  the 
  

   base, 
  to 
  the 
  6th 
  or 
  5th 
  stria. 
  Long. 
  13 
  — 
  18 
  millim. 
  ^ 
  ? 
  . 
  

  

  Hah. 
  Chilpancingo 
  and 
  Acapulco, 
  in 
  Guerrero; 
  

   Mazatlan 
  (Hoge). 
  

  

  Chlcenius 
  ruficauda, 
  Chaud. 
  

   A 
  large 
  series 
  of 
  this 
  species 
  was 
  obtained 
  by 
  Herr 
  

   Hoge 
  at 
  Villa 
  Lerdo, 
  in 
  Durango, 
  and 
  Chihuahua 
  City, 
  

   and 
  an 
  equally 
  large 
  number 
  of 
  the 
  Mexican 
  form 
  at 
  

   Tehuantepec 
  ; 
  the 
  two 
  being 
  strikingly 
  and 
  constantly 
  

   different 
  in 
  size, 
  width 
  of 
  thorax, 
  and 
  to 
  a 
  minor 
  extent 
  

   in 
  sculpture, 
  and 
  the 
  degree 
  to 
  which 
  the 
  orange 
  apical 
  

   spot 
  is 
  sinuated 
  on 
  the 
  suture. 
  The 
  true 
  rvficauda 
  is 
  

   smaller 
  (generally 
  10 
  millim.) 
  and 
  more 
  slender, 
  with 
  

   narrower 
  thorax, 
  more 
  gradually 
  sinuate-angustate 
  

   behind, 
  and 
  feebly 
  sinuated 
  at 
  the 
  suture. 
  Chaudoir's 
  

   names, 
  like 
  all 
  the 
  others 
  given 
  in 
  the 
  synonymy, 
  and 
  

   his 
  description 
  (except 
  as 
  to 
  size) 
  refer 
  to 
  the 
  Californian 
  

   form, 
  which, 
  according 
  to 
  Leconte's 
  figure, 
  agrees 
  with 
  

   that 
  of 
  North 
  Mexico 
  ; 
  consequently 
  a 
  new 
  name 
  must 
  

   be 
  applied 
  to 
  the 
  well-defined 
  South 
  Mexican 
  variety 
  or 
  

   species. 
  Its 
  differential 
  characters 
  are 
  as 
  follows 
  : 
  — 
  

  

  Chlcenius 
  cordifer. 
  — 
  Major, 
  thorace 
  latius 
  rotundato, 
  versus 
  basin 
  

   brevius 
  sinuato, 
  snpra 
  sparsius 
  punctato 
  ; 
  elytris 
  apice 
  macula 
  

   magna 
  aurantiaca 
  late 
  cordiformi 
  apud 
  suturam 
  semper 
  fortiter 
  

   sinuata. 
  Long. 
  12^ 
  millim. 
  

  

  Hah. 
  Tehuantepec, 
  Oaxaca, 
  Putla. 
  

  

  