﻿South 
  American 
  species 
  of 
  Diabrotica. 
  471 
  

  

  153. 
  Diabrotica 
  amijlicornls, 
  Baly. 
  

   Trans. 
  Ent. 
  Soc. 
  Loncl., 
  1886, 
  p. 
  446. 
  

   Hob. 
  Brazil, 
  Parana. 
  

  

  154. 
  Diabrotica 
  melancholica, 
  Baly. 
  

   P. 
  Z.S., 
  1889, 
  p. 
  92. 
  

  

  Angiiste 
  ovata, 
  postice 
  ampliata, 
  convexa, 
  nigra, 
  niticia, 
  femori- 
  

   bus 
  basi 
  antennaruinque 
  articulo 
  apicali 
  flavo-albidis 
  ; 
  thorace 
  

   trausverso, 
  pone 
  medium 
  bifoveolato, 
  nigro-piceo 
  ; 
  elytris 
  sat 
  

   crebre 
  punctatis, 
  snbrugulosis, 
  punctis 
  apicem 
  versus 
  fere 
  obsoletis, 
  

   iuterstitiis 
  laevibus 
  ; 
  utrisque 
  limbo 
  externo 
  angusto, 
  apice 
  pauUo 
  

   ampliato, 
  punctoque 
  prope 
  medium 
  juxta 
  suturam 
  albidis. 
  

  

  Mas. 
  Antennai'um 
  articulis 
  apicalibus 
  duobus 
  dilatatis 
  com- 
  

   pressis. 
  

  

  Long. 
  4^ 
  mm. 
  

  

  Hab. 
  Ecuador 
  {Buckley). 
  

  

  Clypeus 
  concave 
  and 
  closely 
  punctured 
  on 
  either 
  side, 
  medial 
  

   line 
  witli 
  a 
  strongly 
  elevated 
  longitudinal 
  ridge 
  ; 
  antennae 
  in 
  the 
  3' 
  

   (the 
  only 
  sex 
  known 
  to 
  me) 
  with 
  the 
  second 
  joint 
  short, 
  obconic, 
  

   the 
  third 
  nearly 
  twice 
  its 
  length, 
  the 
  fourth 
  slightly 
  shorter 
  than 
  

   the 
  third, 
  the 
  tenth 
  and 
  eleventh 
  strongly 
  thickened 
  and 
  dilated, 
  

   compressed, 
  the 
  former 
  obcuneiform, 
  the 
  latter 
  subhastate, 
  very 
  

   acute 
  ; 
  these 
  two 
  joints 
  conjointly 
  exceed 
  one-third 
  the 
  length 
  of 
  

   the 
  whole 
  antennae 
  ; 
  the 
  two 
  lower 
  joints 
  nigro-piceous, 
  the 
  apical 
  

   one 
  yellowish 
  white. 
  Thorax 
  one-haK 
  broader 
  than 
  long; 
  sides 
  

   straight 
  and 
  parallel 
  from 
  the 
  base 
  to 
  beyond 
  the 
  middle, 
  thence 
  

   very 
  slightly 
  obliquely 
  convergiug 
  towards 
  the 
  apex, 
  the 
  anterior 
  

   and 
  posterior 
  angles 
  acute 
  ; 
  above 
  convex, 
  sparingly 
  punctured 
  on 
  

   the 
  sides, 
  hinder 
  disk 
  impressed 
  on 
  either 
  side 
  with 
  a 
  large 
  round 
  

   fovea 
  ; 
  nigro-piceous, 
  the 
  basal 
  and 
  lateral 
  margins 
  pale 
  piceous. 
  

   Elytra 
  oblong-oval, 
  slightly 
  dilated 
  posteriorly, 
  regularly 
  rounded 
  

   at 
  the 
  apex, 
  convex, 
  slightly 
  flattened 
  along 
  the 
  suture, 
  more 
  

   depressed 
  below 
  the 
  basilar 
  space, 
  rather 
  closely 
  punctured 
  and 
  

   finely 
  and 
  irregularly 
  wrinkled 
  on 
  the 
  anterior 
  two-thirds 
  of 
  the 
  

   disk, 
  the 
  posterior 
  third 
  smooth 
  and 
  nearly 
  impunctate. 
  [Baly.j 
  

  

  155. 
  Diabrotica 
  notaticollis, 
  Baly. 
  

   P.Z.S., 
  1889, 
  p. 
  91. 
  

  

  Anguste 
  ovata, 
  postice 
  ampliata, 
  convexa, 
  flava, 
  nitida, 
  pectore 
  

   femoribus 
  dorso, 
  tibiis 
  posticis, 
  tarsis, 
  antennis, 
  basi 
  exceptis, 
  

   verticis 
  macula, 
  thoracis 
  maculis 
  quatuor 
  aicuatim 
  dispositis, 
  

  

  