﻿428 
  Mr. 
  Charles 
  J. 
  Gahan 
  on 
  the 
  

  

  entirely 
  across 
  the 
  elytron, 
  is 
  bounded 
  anteriorly 
  by 
  a 
  narrow 
  

   flavous 
  ridge. 
  [Baly.] 
  

  

  37. 
  Diahmtica 
  suturalis, 
  Baly. 
  

   Trans. 
  Ent. 
  Soc. 
  Loud., 
  3rd 
  ser., 
  ii., 
  1865, 
  p. 
  348. 
  

   Hah. 
  Ca,yenne, 
  Brazil. 
  

  

  38. 
  Diahrotica 
  trij^lo-gidt^i, 
  Baly. 
  

  

  Elongata, 
  postice 
  paullo 
  anipliata, 
  modice 
  convexa, 
  flava, 
  nitida, 
  

   capite 
  nigro, 
  antennis 
  apice 
  flavo-albidis 
  ; 
  thorace 
  trifoveolato 
  

   nigro-cupreo, 
  lateribns 
  pallide 
  flavis 
  ; 
  elytris 
  pallide 
  flavis, 
  utrisque 
  

   plaga 
  magna 
  communi 
  a 
  basi 
  fere 
  ad 
  medium 
  extensa, 
  ad 
  latus 
  

   abbreviata 
  alteraque 
  pone 
  medium 
  utrinque 
  abbreviata 
  nigro- 
  

   cupreis. 
  

  

  Diahrotica 
  trijdagiata, 
  Baly, 
  Ann. 
  & 
  Mag. 
  Nat. 
  Hist., 
  October, 
  

   1859, 
  p. 
  272. 
  

  

  Var. 
  A. 
  Elytris 
  nigro-cupreis, 
  limbo 
  externo, 
  apice 
  ampliato 
  

   fasciaque 
  mediali 
  pallide 
  flavis. 
  

  

  Diahrotica 
  trabeata, 
  Kirscli., 
  Berl. 
  Ent. 
  Zeit., 
  xxvii., 
  1883, 
  

   Heft 
  11, 
  p. 
  201. 
  

  

  Var. 
  B. 
  Elytrorum 
  fascia 
  mediali 
  obsoleta, 
  ceteris 
  ut 
  in 
  Var. 
  A. 
  

  

  Mas. 
  Elytris 
  utrisque 
  pone 
  medium 
  prope 
  sutm'am 
  carina 
  

   brevi 
  elevata 
  instructis. 
  

  

  Hah. 
  Ecuador; 
  banks 
  of 
  the 
  River 
  Napo 
  (Stuhel, 
  

   Buckley). 
  Type 
  and 
  var. 
  A, 
  Upper 
  Amazons; 
  var. 
  B 
  

   {Staudmger). 
  

  

  I 
  cannot 
  separate 
  D. 
  traheata, 
  Kirsch., 
  whose 
  type- 
  

   specimen 
  I 
  have 
  before 
  me, 
  from 
  I), 
  triplagiata, 
  mihi, 
  

   and 
  have 
  therefore 
  placed 
  the 
  two 
  forms 
  under 
  a 
  single 
  

   head. 
  D. 
  fraterna, 
  an 
  insect 
  closely 
  resembling 
  in 
  

   coloration 
  the 
  present 
  species, 
  I 
  found 
  on 
  subsequent 
  

   examination 
  to 
  belong 
  to 
  the 
  genus 
  Dircema, 
  Clark. 
  

   [Baly.] 
  

  

  39. 
  Diahrotica 
  flavomarginata, 
  Baly. 
  

  

  Journ. 
  Linn. 
  Soc, 
  xix., 
  p. 
  234. 
  

  

  Hah. 
  Colombia, 
  Magdelaine, 
  Bogota, 
  

  

  40. 
  Diahrotica 
  coccinea, 
  Baly. 
  

   Trans. 
  Ent. 
  Soc. 
  Lond., 
  1865, 
  p. 
  345. 
  

  

  Var. 
  A. 
  Supra 
  pallide 
  piceo-fulva, 
  caeteris 
  ut 
  in 
  typo. 
  

   Var. 
  B. 
  Pectore 
  abdomineque 
  nigris, 
  cteteris 
  ut 
  in 
  var. 
  A. 
  

  

  