﻿South 
  American 
  sjjecies 
  of 
  Diahrotica. 
  429 
  

  

  Hab. 
  Colombia, 
  Magdalena 
  Eiver 
  (type) 
  ; 
  Cauca 
  

   (vars. 
  A 
  and 
  B). 
  

  

  The 
  present 
  species 
  is 
  very 
  similar 
  in 
  form 
  to 
  D. 
  

   elongata, 
  Duviv. 
  ; 
  it 
  may 
  be 
  known 
  by 
  its 
  smaller 
  size, 
  

   by 
  the 
  strongly 
  torulose 
  elytra, 
  and 
  by 
  the 
  presence 
  of 
  

   a 
  third 
  transverse 
  sulcation 
  behind 
  the 
  middle 
  of 
  the 
  

   latter. 
  [Baly.] 
  

  

  41. 
  Diahrotica 
  elongata, 
  Duviv. 
  

  

  Comptes 
  rend, 
  de 
  la 
  Soc. 
  Ent. 
  Belgique, 
  1887, 
  tom. 
  

   xxxi., 
  p. 
  xlvii. 
  

  

  Elongata, 
  postice 
  ampliata, 
  convexa, 
  nitida, 
  subtns 
  nigra 
  pedi- 
  

   bus 
  piceis 
  ; 
  supra 
  picea, 
  elytris 
  apice 
  antennisque 
  sordide 
  fulvis, 
  

   scutello 
  nigro 
  ; 
  tliorace 
  quam 
  longiori 
  vis 
  latiori, 
  lateribus 
  sinuatis, 
  

   disco 
  bifoveolato 
  ; 
  elytris 
  infra 
  basin 
  et 
  prope 
  medium 
  transversim 
  

   depressis, 
  tenuissime 
  pimctatis. 
  

  

  Var. 
  A. 
  Pedibus 
  antennisque 
  nigro-piceis, 
  cseteris 
  ut 
  in 
  typo. 
  

  

  Hah, 
  Colombia, 
  Cauca. 
  

  

  Head 
  longer 
  than 
  broad, 
  wedge-shaped 
  ; 
  clypeus 
  with 
  a 
  distinct 
  

   longitudinal 
  ridge 
  ; 
  labrum 
  black 
  ; 
  antennae 
  filiform, 
  three-fourths 
  

   the 
  length 
  of 
  the 
  body, 
  the 
  second 
  joint 
  short, 
  the 
  third 
  more 
  than 
  

   twice 
  its 
  length, 
  nearly 
  equal 
  to 
  the 
  fourth. 
  Thorax 
  slightly 
  

   broader 
  than 
  long 
  ; 
  sides 
  slightly 
  produced 
  and 
  roixnded 
  just 
  before 
  

   the 
  middle, 
  rather 
  deeply 
  sinuate 
  behind 
  the 
  latter 
  ; 
  above 
  mode- 
  

   rately 
  convex, 
  rather 
  abruptly 
  deflexed 
  on 
  the 
  sides, 
  shining, 
  very 
  

   minutely 
  punctured, 
  the 
  punctures 
  only 
  visible 
  under 
  a 
  lens; 
  disk 
  

   impressed 
  on 
  either 
  side 
  with 
  a 
  large 
  round 
  fovea. 
  Elytra 
  sub- 
  

   elongate, 
  gradually 
  dilated 
  posteriorly, 
  their 
  apices 
  conjointly 
  

   regiilarly 
  rounded 
  ; 
  above 
  convex, 
  minutely 
  punctured, 
  trans- 
  

   versely 
  excavated 
  below 
  the 
  basilar 
  space 
  and 
  again 
  across 
  the 
  

   middle, 
  the 
  space 
  between 
  these 
  depressions 
  thickened. 
  

  

  This 
  species 
  differs 
  from 
  D. 
  coccinea, 
  Baly, 
  in 
  the 
  

   absence 
  of 
  the 
  third 
  transverse 
  depression 
  on 
  the 
  elytra, 
  

   present 
  in 
  the 
  latter 
  insect, 
  and 
  in 
  the 
  surface 
  between 
  

   the 
  sulcations 
  being 
  much 
  less 
  strongly 
  thickened. 
  

   [Baly.] 
  

  

  42. 
  Diahrotica 
  ceneipennis, 
  Baly. 
  

  

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

  

  Hah. 
  Colombia. 
  

  

  