﻿440 
  Mr. 
  Charles 
  J. 
  Gahan 
  on 
  the 
  

  

  larger 
  and 
  more 
  rounded, 
  near 
  tlie 
  apex. 
  The 
  legs 
  and 
  the 
  tinder 
  

   side 
  of 
  the 
  body, 
  the 
  prothorax 
  excepted, 
  are 
  black. 
  

  

  This 
  species 
  looks, 
  at 
  first 
  sight, 
  somewhat 
  like 
  D. 
  

   Chevrolati, 
  Har., 
  but 
  is 
  very 
  distinct. 
  

  

  70. 
  Diahrotica 
  Chevrolati, 
  Harold. 
  

   Col., 
  Hefte 
  xiii., 
  1875, 
  p. 
  93. 
  

   Hab. 
  Colombia. 
  

  

  71. 
  Diahrotica 
  Volxemi, 
  Baly. 
  

   Ent. 
  Mo. 
  Mag., 
  xxv., 
  p. 
  253. 
  

  

  Ovata, 
  postice 
  amphata, 
  convexa, 
  nigro-cuprea, 
  nitida, 
  antennis 
  

   nigris 
  ; 
  thorace 
  bifoveolato, 
  subcrebre 
  punctato 
  ; 
  elytris 
  tenuiter 
  

   punctatis, 
  fulvis, 
  limbo 
  externo, 
  sutura 
  maculisque 
  irregularibus, 
  

   hie 
  illic 
  inter 
  se 
  confluentibus, 
  nigro-cupreis. 
  

  

  Long. 
  6i 
  — 
  7i 
  mm. 
  

  

  Hab. 
  Brazil 
  {Van 
  Volxem). 
  

  

  Head 
  triangular, 
  scarcely 
  longer 
  than 
  broad 
  ; 
  clypeus 
  finely 
  

   punctured, 
  its 
  medial 
  line 
  with 
  an 
  impimctate 
  longitudinal 
  ridge 
  ; 
  

   antennae 
  filiform, 
  the 
  second 
  joint 
  short, 
  obovate, 
  the 
  third 
  nearly 
  

   twice 
  its 
  length, 
  the 
  fourth 
  scarcely 
  longer 
  than 
  the 
  third 
  ; 
  black, 
  

   the 
  bases 
  of 
  the 
  three 
  or 
  four 
  lower 
  joints 
  piceous. 
  Thorax 
  about 
  

   one-half 
  broader 
  than 
  long 
  ; 
  sides 
  slightly 
  sinuate 
  and 
  slightly 
  

   diverging 
  from 
  the 
  base, 
  thence 
  obhquely 
  rounded 
  and 
  converging 
  

   towards 
  the 
  apex, 
  the 
  anterior 
  angles 
  tuberculate, 
  the 
  hinder 
  ones 
  

   acute 
  ; 
  upper 
  surface 
  moderately 
  convex, 
  distinctly 
  and 
  rather 
  

   closely 
  punctured 
  ; 
  disk 
  impressed 
  on 
  either 
  side 
  with 
  a 
  deep 
  round 
  

   fovea. 
  Elytra 
  broadly 
  ovate, 
  dilated 
  posteriorly, 
  their 
  apices 
  con- 
  

   jointly 
  regularly 
  rounded, 
  moderately 
  convex, 
  not 
  impressed 
  below 
  

   the 
  basilar 
  space, 
  minutely 
  punctured. 
  [Baly.] 
  

  

  72. 
  Diahrotica 
  Deyrollei, 
  Baly. 
  

  

  Trans. 
  Ent. 
  Soc. 
  Lond., 
  3rd 
  ser., 
  ii. 
  (1865), 
  p. 
  347 
  ; 
  

   Jom'n. 
  Linn. 
  Soc, 
  xix., 
  p. 
  241. 
  

   Hah. 
  Colombia. 
  

  

  73. 
  Diahrotica 
  ceneiventris, 
  Baly. 
  

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

  

  Anguste 
  ovata, 
  postice 
  ampliata, 
  convexa, 
  nigro-aenea, 
  nitida, 
  

   tibiis, 
  tarsis, 
  scutello 
  capiteque 
  nigris, 
  antennis 
  basi 
  piceo-fulvis, 
  

  

  