﻿468 
  Mr. 
  Charles 
  J. 
  Gahan 
  on 
  the 
  

  

  136. 
  Diahrotica 
  divisa, 
  Baly. 
  

   Ann. 
  and 
  Mag. 
  Nat. 
  Hist., 
  5th 
  ser., 
  iii., 
  p. 
  88 
  

   Hah. 
  Ecuador. 
  

  

  137. 
  Diahrotica 
  posticata, 
  Baly. 
  

   Journ. 
  Linn. 
  Soc, 
  xix., 
  p. 
  252. 
  

   Hah. 
  Colombia. 
  

  

  138. 
  Diahrotica 
  quadrijm^ictata, 
  Gahan, 
  sp. 
  n. 
  

  

  Cerotoma 
  quadripunctata, 
  Buq. 
  MS. 
  

  

  Late 
  ovata, 
  flavescens 
  ; 
  elytris 
  atro-cyaneis, 
  tertia 
  basali 
  (punetis 
  

   quatuor 
  atro-cyaneis 
  exceptis) 
  marginibiisque 
  externis 
  flavis 
  ; 
  cor- 
  

   pora 
  STibtus 
  (abdomine 
  nigro 
  exeepto), 
  pedibus 
  antennisque 
  flave- 
  

   scentibus 
  ; 
  protboracis 
  dorso 
  bi-impresso, 
  impunctato, 
  nitido 
  ; 
  

   elytris 
  subveutricosis 
  sat 
  dense 
  puuctulatis. 
  Long. 
  6 
  mm. 
  

  

  Hah. 
  Colombia. 
  

  

  Testaceous 
  yellow. 
  Antennae 
  witli 
  tlie 
  third 
  joint 
  twice 
  as 
  long 
  

   as 
  the 
  second, 
  and 
  equal 
  in 
  length 
  to 
  the 
  fourth. 
  Prothoras 
  with 
  

   its 
  sides 
  almost 
  parallel, 
  its 
  disk 
  impunctate, 
  nitid, 
  with 
  two 
  trans- 
  

   verse 
  impressions. 
  Elytra 
  bluish 
  black, 
  with 
  the 
  basal 
  third 
  (four 
  

   blue-black 
  points, 
  of 
  which 
  one 
  is 
  over 
  each 
  shoulder, 
  and 
  one 
  on 
  

   the 
  disk 
  of 
  each 
  elytron 
  a 
  little 
  behind 
  the 
  base, 
  excepted), 
  and 
  the 
  

   entire 
  outer 
  margin 
  yellowish. 
  Abdomen 
  black. 
  

  

  139. 
  Diahrotica 
  luguhris, 
  Baly. 
  

   Journ. 
  Linn. 
  Soc, 
  xix., 
  p. 
  253. 
  

   Hah. 
  Colombia. 
  

  

  140. 
  Diahrotica 
  dimidiaticornis, 
  Baly. 
  

   Trans. 
  Ent. 
  Soc. 
  Lond., 
  1886, 
  p. 
  451. 
  

   Hah. 
  Ecuador. 
  

  

  141. 
  Diahrotica 
  leucosjnla, 
  Baly. 
  

   Journ. 
  Linn. 
  Soc, 
  xix., 
  p. 
  253. 
  

   Hah. 
  Colombia. 
  

  

  142. 
  Diahrotica 
  socia, 
  Gahan, 
  n. 
  n. 
  

  

  Diahrotica 
  tetraspilota, 
  Baly, 
  Journ. 
  Linn. 
  Soc, 
  xix., 
  

   p. 
  254, 
  nee 
  Baly, 
  Trans. 
  Ent. 
  Soc, 
  Lond., 
  1865, 
  

   p. 
  351. 
  

  

  Hah. 
  Colombia. 
  

  

  