﻿Carabidd€us 
  fauna 
  of 
  Mexico. 
  261 
  

  

  The 
  genus 
  Pogonus 
  is 
  an 
  addition 
  to 
  the 
  Mexican 
  

   fauna. 
  

  

  Tachys 
  {Barytachys) 
  decastichus. 
  

   T. 
  duplex 
  (Bates) 
  affinis 
  et 
  similis, 
  sed 
  differt 
  inter 
  alia 
  colore 
  

   supra 
  saturate 
  viridi-seneo. 
  Antennarum 
  articuli 
  2 
  basales 
  palpi 
  

   et 
  mandibulae 
  pedesque 
  pallide 
  rufo-testacea, 
  corpore 
  subtus 
  nigro- 
  

   seneo 
  prosterni 
  lateribus 
  interdum 
  castaneis. 
  Thorax 
  transversus 
  

   antice 
  valde 
  rotundato-dilatatus 
  post 
  medium 
  sinuatim 
  angustatus 
  

   ante 
  angulos 
  lateribus 
  rectis 
  angulisque 
  postice 
  subacutis 
  ; 
  sulco 
  

   basali 
  laevi 
  fovea 
  utrinque 
  profunda 
  carinulaque 
  obliqua 
  juxta 
  

   angulum. 
  Elytra 
  convexa 
  punctato-striata, 
  striis 
  utrinque 
  quinque 
  

   suturali 
  baud 
  profundiori, 
  2 
  — 
  5 
  ante 
  apicem 
  abbreviatis 
  (5a 
  per- 
  

   parum 
  abbreviata) 
  spatiis 
  apicali 
  et 
  laterali 
  Isevissimis, 
  stria 
  3ia 
  

   grosse 
  bipunctata, 
  puncto 
  primo 
  ante, 
  secundo 
  post, 
  medium, 
  

   striola 
  recurva 
  recta 
  obliqua. 
  Long. 
  2^ 
  millim. 
  

  

  Hah. 
  Teapa, 
  in 
  Tabasco 
  {H. 
  H. 
  Smith). 
  

  

  Pericompsus 
  Tahasconus. 
  

   P. 
  stictico 
  (Bates) 
  affinissimus, 
  at 
  differt 
  semper 
  elytrorum 
  

   maculis 
  majoribus 
  primaque 
  (subhumerali) 
  usque 
  ad 
  striam 
  3iani 
  

   vel 
  4tam 
  extensa. 
  Nigro-seneus 
  antennarum 
  articulis 
  1 
  — 
  3 
  partibus 
  

   oris 
  pedibusque 
  flavo-testaceis. 
  Gracile 
  ovatus. 
  Thorax 
  paruni 
  

   transversus 
  antice 
  mediocriter 
  rotundatus, 
  angulis 
  posticis 
  sub^ 
  

   acutis. 
  Elytra 
  convexa, 
  utrinque 
  striis 
  punctulatis 
  sex, 
  exteriori- 
  

   bus 
  ante 
  apicem 
  abbreviatis, 
  interstitio 
  3io 
  bipunctato 
  ; 
  macula 
  

   flava 
  subhumerah 
  a 
  margine 
  laterali 
  (ibique 
  lata 
  et 
  elongata) 
  

   usque 
  ad 
  striam 
  3iam 
  vel 
  4am 
  extensa, 
  macula 
  apicali 
  magna 
  

   obhqua. 
  Long. 
  2^ 
  millim. 
  

  

  Hah. 
  Teapa 
  {H. 
  H. 
  Smith) 
  and 
  San 
  Juan 
  Bautista 
  

   (Hoge), 
  in 
  Tabasco. 
  

  

  There 
  is 
  no 
  difference 
  that 
  I 
  can 
  detect 
  between 
  this 
  

   species 
  and 
  the 
  Guatemalan 
  P. 
  sticticus, 
  except 
  in 
  the 
  

   dimensions 
  of 
  the 
  yellow 
  elytral 
  spots, 
  which 
  in 
  the 
  

   latter 
  are 
  much 
  smaller, 
  the 
  anterior 
  one 
  narrow 
  and 
  

   confined 
  to 
  the 
  marginal 
  interstice. 
  It 
  is, 
  however, 
  

   constant 
  in 
  its 
  difference 
  throughout 
  a 
  large 
  series 
  of 
  

   examples, 
  and 
  merits 
  a 
  distinguishing 
  name, 
  if 
  only 
  as 
  

   a 
  local 
  variety. 
  

  

  Bemhidium 
  sphcerulifer. 
  

  

  B. 
  Chavipio7ii 
  simile, 
  seneum 
  politum 
  elytris 
  utrinque 
  7-striatis 
  

   stria 
  septima 
  brevissima 
  ; 
  differt 
  antennis 
  5 
  — 
  11 
  et 
  4toapice 
  nigro- 
  

  

  T 
  2 
  

  

  