﻿424 
  Mr. 
  Charles 
  J. 
  Gahan 
  on 
  the 
  

  

  27. 
  Diahrotica 
  cxhnia, 
  Baly. 
  

  

  Ann. 
  and 
  Mag. 
  Nat. 
  Hist., 
  5th 
  ser., 
  vol. 
  iii., 
  p. 
  74. 
  

   Hah. 
  Bolivia. 
  

  

  28. 
  Diahrotica 
  pidchra, 
  Baly. 
  

  

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

  

  Diahrotica 
  gloriosa, 
  v. 
  Harold, 
  Mitt. 
  Miinch. 
  Ent. 
  Ver., 
  

   1877, 
  p. 
  110. 
  

  

  Hah. 
  Colombia. 
  

  

  29. 
  Diahrotica 
  verrucosa, 
  Jacoby. 
  

  

  Elongata, 
  posticepauUo 
  ainpliata, 
  convexa, 
  fulvo-testacea, 
  niticla, 
  

   capite 
  nigro, 
  antennis 
  apice 
  pedibusque 
  flavis, 
  sctitello 
  tboraceque 
  

   rufis, 
  hoc 
  trifoveolato 
  ; 
  elytris 
  modice 
  convexis 
  medio 
  transversim 
  

   depressis, 
  ad 
  apiceni 
  subventricosis 
  rade 
  rugulosis, 
  viridi-geneis, 
  

   fascia 
  vix 
  pone 
  medium 
  limboque 
  externo 
  flavis. 
  

  

  Var. 
  A. 
  Elytrorum 
  fascia 
  obsoleta. 
  Jacoby, 
  Proc. 
  Zool. 
  Soc, 
  

   1880, 
  p. 
  603, 
  pi. 
  Iv., 
  fig. 
  1. 
  

  

  Var. 
  B. 
  Antennis 
  flavis 
  articulis 
  intermediis 
  nigris. 
  

  

  Var. 
  0. 
  Antennis 
  toiis 
  flavis. 
  

  

  Mas. 
  Elytris 
  vitta 
  ciu'vata 
  elevata 
  ante 
  apicem 
  prope 
  suturam 
  

   posita 
  instructis. 
  

  

  Hah. 
  Ecuador 
  (Buckley). 
  

  

  Head 
  not 
  longer 
  than 
  broad, 
  triangular 
  ; 
  cly]peus 
  with 
  a 
  distinct 
  

   longitudinal 
  ridge 
  ; 
  antennae 
  filiform, 
  shorter 
  than 
  the 
  body, 
  the 
  

   second 
  joint 
  short, 
  the 
  third 
  more 
  than 
  twice 
  its 
  length, 
  rather 
  

   shorter 
  than 
  the 
  fourth. 
  Thorax 
  one-half 
  broader 
  than 
  long; 
  

   sides 
  sinuate 
  behind 
  the 
  middle, 
  rounded 
  and 
  converging 
  towards 
  

   the 
  apex 
  ; 
  anterior 
  and 
  hinder 
  angles 
  subacute 
  ; 
  disk 
  trifoveolate, 
  

   the 
  middle 
  fovea 
  placed 
  behind 
  the 
  others, 
  and 
  ill-defined. 
  

   Elytra 
  oblong, 
  slightly 
  dilated 
  posteriorly, 
  convex, 
  ti'ansversely 
  

   depressed 
  across 
  the 
  middle, 
  subventricose 
  posteriorly, 
  coai'sely 
  

   rugose. 
  

  

  The 
  above 
  insect 
  is 
  very 
  nearly 
  allied 
  to 
  D. 
  Erichsoni, 
  

  

  Baly. 
  It 
  differs 
  in 
  its 
  somewhat 
  larger 
  size, 
  and 
  in 
  the 
  

  

  coarser 
  punctuation 
  and 
  brighter 
  colour 
  of 
  its 
  elytra. 
  

  

  The 
  two 
  are 
  possibly 
  extreme 
  forms 
  of 
  the 
  same 
  species. 
  

  

  [Baly.] 
  

  

  