﻿South 
  American 
  species 
  of 
  Diabrotica. 
  445 
  

  

  Mas. 
  Antennis 
  articulis 
  3o 
  — 
  Sum 
  leviter 
  incrassatis 
  ; 
  tibiis 
  

   intermediis 
  tertia 
  parte 
  apicali 
  leviter 
  sed 
  manifeste 
  dilatata. 
  

  

  Hab. 
  Amazons, 
  Santarem 
  ; 
  Cayenne, 
  and 
  Colombia, 
  

   Cauca. 
  

  

  This 
  species 
  is 
  somewhat 
  variable. 
  In 
  the 
  single 
  

   specimen 
  from 
  Cayenne 
  the 
  spots 
  of 
  the 
  elytra 
  are 
  

   larger, 
  and 
  the 
  punctuation 
  of 
  the 
  thorax 
  somewhat 
  

   stronger 
  than 
  in 
  typical 
  examples. 
  In 
  the 
  two 
  speci- 
  

   mens 
  from 
  Coloml3ia, 
  each 
  elytron 
  has, 
  instead 
  of 
  a 
  

   spot, 
  a 
  narrow 
  transverse 
  band 
  near 
  the 
  middle. 
  This 
  

   variety 
  has 
  a 
  close 
  resemblance 
  to 
  D. 
  spectahilis, 
  Baly. 
  

  

  The 
  male 
  of 
  the 
  present 
  species 
  has 
  the 
  first 
  joint 
  of 
  

   the 
  anterior 
  tarsi 
  slightly 
  elongated, 
  but 
  scarcely 
  dilated, 
  

   and 
  has 
  rather 
  more 
  than 
  the 
  distal 
  third 
  of 
  the 
  inter- 
  

   mediate 
  tibiae 
  thickened. 
  By 
  these 
  characters 
  it 
  may 
  

   be 
  easily 
  distinguished 
  from 
  the 
  same 
  sex 
  of 
  D. 
  specta- 
  

   hilis. 
  

  

  80. 
  Diabrotica 
  deleeta, 
  Gahan, 
  n. 
  n. 
  

  

  Diabrotica 
  leucospila, 
  Baly 
  MS., 
  nee 
  Baly, 
  Journ. 
  Linn. 
  

   Soc, 
  xix., 
  p. 
  253. 
  

  

  AngTiste 
  ovata, 
  postice 
  anipliata, 
  convesa, 
  flava, 
  nitida 
  ; 
  tibiis 
  

   anticis 
  dorso, 
  posticis 
  quatnortotis,tarsis,pectore, 
  scutello, 
  capiteque 
  

   nigris, 
  aut 
  nigro-piceis, 
  facie 
  inferiori 
  antenn 
  arum 
  que 
  articulis 
  

   sexto 
  ad 
  nonum 
  albidis 
  ; 
  thorace 
  quam 
  longo 
  plus 
  dimidio 
  latiori, 
  

   transversim 
  convexo, 
  Isevi 
  ; 
  elytris 
  distincte 
  sed 
  tenuiter 
  punctatis, 
  

   utrisque 
  limbo 
  esterno 
  ad 
  apicem 
  abbreviata, 
  maculis 
  duabus 
  sub- 
  

   rotundatis, 
  una 
  infra 
  basin, 
  una 
  ante 
  apicem 
  fasciaque 
  pone 
  medium 
  

   utrinque 
  abbreviata, 
  albidis. 
  

  

  Mas. 
  Antennarum 
  articulis 
  tertio 
  ad 
  quintum 
  elongatis, 
  paullo 
  

   incrassatis 
  ; 
  femoribus 
  intermediis 
  subtus 
  obsolete 
  tuberculatis 
  ; 
  

   tibiis 
  ejusdem 
  paris 
  pone 
  medium 
  incrassatis. 
  

  

  Long. 
  7 
  mm. 
  

  

  Hob. 
  Amazons, 
  Nauta 
  {Bates). 
  

  

  Head 
  slightly 
  longer 
  than 
  broad, 
  subcuneiform 
  ; 
  clypeus 
  with 
  a 
  

   broad 
  longitudinal 
  ridge, 
  the 
  lovi^er 
  half 
  of 
  which 
  is 
  triangularly 
  

   dilated 
  ; 
  the 
  lower 
  face 
  white, 
  the 
  labrum 
  and 
  jaws 
  pale 
  piceous 
  ; 
  

   antennae 
  in 
  the 
  <? 
  slightly 
  exceeding 
  the 
  body 
  in 
  length, 
  the 
  second 
  

   joint 
  nearly 
  twice 
  as 
  long 
  as 
  broad, 
  obovate, 
  the 
  third, 
  fourth, 
  and 
  

   fifth 
  each 
  more 
  than 
  twice 
  the 
  length 
  of 
  the 
  second, 
  slightly 
  

   thickened, 
  cylindrical 
  ; 
  the 
  sixth 
  to 
  the 
  eleventh 
  shorter 
  and 
  more 
  

   slender 
  than 
  the 
  preceding 
  ones, 
  nearly 
  equal, 
  the 
  sixth 
  to 
  the 
  

   ninth 
  yellowish 
  white. 
  Thorax 
  more 
  than 
  one-half 
  broader 
  than 
  

  

  