﻿South 
  American 
  species 
  of 
  Diahrotica 
  431 
  

  

  nitido, 
  dorso 
  teniTissime 
  sparsissimeque 
  punctato, 
  iitrinque 
  leviter 
  

   foveolato-impresso 
  ; 
  elytris 
  sub-nitidis, 
  sat 
  fortiter 
  efc 
  dense 
  punc- 
  

   tatis. 
  Long 
  6 
  mm. 
  

  

  Hab. 
  Brazil, 
  Eio 
  Janeiro. 
  

  

  Antenna 
  filiform, 
  black, 
  with 
  the 
  third 
  joint 
  more 
  than 
  twice 
  as 
  

   long 
  as 
  the 
  second, 
  and 
  about 
  equal 
  in 
  length 
  to 
  the 
  fourth. 
  

   Prothorax 
  transverse, 
  yellowish, 
  nitid 
  ; 
  the 
  disk 
  with 
  some 
  feeble 
  

   punctures 
  towards 
  the 
  sides 
  and 
  base, 
  and 
  with 
  a 
  foveolate 
  im- 
  

   pression 
  on 
  each 
  side 
  of 
  the 
  middle. 
  Elytra 
  subnitid, 
  thickly 
  and 
  

   somewhat 
  strongly 
  punctured, 
  black, 
  with 
  a 
  marginal 
  band, 
  

   widening 
  slightly 
  towards 
  the 
  apex, 
  flavous. 
  Legs 
  and 
  under-side 
  

   of 
  body 
  sordid 
  yellow 
  ; 
  tibiae 
  and 
  tarsi 
  black. 
  

  

  This 
  species 
  closely 
  resembles 
  the 
  preceding, 
  but 
  is 
  

   smaller, 
  with 
  the 
  elytra 
  somewhat 
  glossy, 
  and 
  their 
  

   punctures 
  not 
  so 
  strong 
  nor 
  so 
  closely 
  placed 
  together. 
  

  

  47. 
  Diahrotica 
  albidocincta, 
  Baly, 
  sp. 
  n. 
  

  

  Subelongata, 
  postice 
  pauUo 
  arnpliata, 
  convexa, 
  nigra, 
  nitida 
  ; 
  

   femoribus, 
  dorso 
  esceptis, 
  tibiis 
  anticis, 
  dorso 
  excejDtis, 
  tibiis 
  

   posticis 
  apice, 
  antennis 
  apice, 
  thoracis 
  lateribus 
  elytrorumque 
  limbo 
  

   externo, 
  albidis; 
  thorace 
  transverso, 
  lateribus 
  ante 
  medium 
  paullo 
  

   ampliatis, 
  disco 
  profunde 
  bifoveolato, 
  postice 
  sat 
  fortiter 
  punctato 
  ; 
  

   elytris 
  crebre 
  sat 
  fortiter 
  punctatis. 
  

  

  Long. 
  6^ 
  mm. 
  

  

  Hab. 
  Brazil. 
  

  

  Head 
  triangular, 
  not 
  broader 
  than 
  long 
  ; 
  clypeus 
  with 
  a 
  strongly 
  

   raised 
  longitudinal 
  ridge 
  ; 
  antennae 
  filiform, 
  very 
  slightly 
  thickened 
  

   at 
  the 
  apex, 
  nearly 
  equal 
  to 
  the 
  body 
  in 
  length, 
  the 
  second 
  joint 
  

   oblong-ovate, 
  the 
  third 
  twice 
  its 
  length, 
  equal 
  to 
  the 
  fourth; 
  black, 
  

   the 
  upper 
  two 
  joints, 
  the 
  apex 
  of 
  the 
  terminal 
  one 
  excepted, 
  white. 
  

   Thorax 
  more 
  than 
  one-half 
  broader 
  than 
  long 
  ; 
  sides 
  rather 
  broadly 
  

   margined, 
  sinuate 
  and 
  diverging 
  to 
  just 
  beyond 
  the 
  middle, 
  thence 
  

   rounded 
  and 
  converging 
  towards 
  the 
  apex, 
  the 
  anterior 
  angles 
  

   tuberculate, 
  the 
  hinder 
  ones 
  subacute; 
  upper 
  surface 
  moderately 
  

   convex 
  ; 
  hinder 
  disk 
  impressed 
  with 
  two 
  large 
  deeply 
  excavated 
  

   subtrigonate 
  foveas, 
  which 
  are 
  separated 
  from 
  each 
  other 
  by 
  a 
  

   narrow 
  line 
  ; 
  anterior 
  disk 
  shining, 
  nearly 
  impuncfcate, 
  the 
  hinder 
  

   disk, 
  together 
  with 
  the 
  fovese, 
  strongly 
  punctured. 
  Scutellum 
  

   nigro-piceous. 
  Elytra 
  narrowly 
  oblong, 
  slightly 
  dilated 
  posteriorly, 
  

   regularly 
  rounded 
  at 
  the 
  apices, 
  convex, 
  flattened 
  along 
  the 
  suture, 
  

   the 
  humeral 
  callus 
  prominent 
  ; 
  surface 
  strongly 
  and 
  rather 
  closely 
  

   punctured, 
  [Baly.] 
  

  

  