﻿South 
  American 
  species 
  of 
  Diahrotica. 
  453 
  

  

  94. 
  Diahrotica 
  alhocincta, 
  Baly. 
  

   P. 
  Z. 
  S., 
  1889, 
  p. 
  93. 
  

  

  Anguste 
  ovata, 
  postice 
  ampliata, 
  convexa, 
  nigra, 
  nitida, 
  tborace 
  

   lateribus 
  lati, 
  elytrorum 
  limbo 
  externo 
  apice 
  dilatato, 
  fasciaque 
  

   angusta 
  vix 
  pone 
  medium, 
  albidis 
  ; 
  tborace 
  bifoveolato. 
  

  

  Long. 
  5^ 
  mm. 
  

  

  Hah. 
  Peru. 
  

  

  Antennae 
  filiform, 
  tbe 
  second 
  joint 
  short, 
  moniliform, 
  the 
  third 
  

   more 
  than 
  twice 
  as 
  long, 
  equal 
  in 
  length 
  to 
  the 
  fourth 
  ; 
  eight 
  lower 
  

   joints 
  black 
  (the 
  rest 
  in 
  the 
  only 
  specimen 
  before 
  me 
  are 
  broken 
  

   off). 
  Thorax 
  rather 
  raore 
  than 
  one-half 
  broader 
  than 
  long; 
  sides 
  

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

   thence 
  slightly 
  narrowed 
  obliquely 
  to 
  the 
  apex 
  ; 
  disk 
  transversely 
  

   convex, 
  impressed 
  on 
  either 
  side 
  with 
  a 
  deep 
  round 
  fovea. 
  Elytra 
  

   oblong, 
  dilated 
  posteriorly, 
  regularly 
  rounded 
  at 
  the 
  apex, 
  convex, 
  

   slightly 
  flattened 
  on 
  the 
  suture 
  below 
  the 
  basilar 
  space, 
  finely 
  

   punctured. 
  [Baly.] 
  

  

  95. 
  Diahrotica 
  alhopicta, 
  Baly. 
  

   P. 
  Z. 
  S., 
  1889, 
  p. 
  93. 
  

  

  Anguste 
  ovata, 
  postice 
  ampliata, 
  convexa, 
  flavo-fulva, 
  nitida 
  ; 
  

   tibiis, 
  tarsis, 
  pectore, 
  seutello 
  capiteqiie 
  nigris 
  ; 
  antennis 
  basi 
  

   piceo-fulvis, 
  articulis 
  penultimis 
  duobus 
  albidis 
  ; 
  tborace 
  quam 
  

   longo 
  plus 
  dimidio 
  latiori, 
  disco 
  leviter 
  trifoveolato 
  ; 
  elytris 
  sub- 
  

   rugulosis, 
  rude 
  punctatis 
  ; 
  nigris, 
  utrisque 
  macula 
  infra 
  basin, 
  

   altera 
  ante 
  apicem 
  fasciaque 
  prope 
  medium, 
  utrinque 
  abbreviata, 
  

   albidis. 
  

  

  Long. 
  5i 
  mm. 
  

  

  Hah. 
  Peru 
  ; 
  a 
  single 
  specimen. 
  

  

  Head 
  not 
  longer 
  than 
  broad, 
  triangular 
  ; 
  clypeus 
  with 
  a 
  strongly 
  

   raised 
  longitudinal 
  ridge, 
  which 
  extends 
  as 
  far 
  as 
  the 
  anterior 
  

   margin, 
  the 
  latter 
  thickened, 
  space 
  on 
  either 
  side 
  concave, 
  closely 
  

   covered 
  with 
  fine 
  punctures 
  ; 
  antennae 
  filiform, 
  the 
  second 
  joint 
  

   short, 
  oblong, 
  the 
  third 
  and 
  fourth 
  equal 
  in 
  length, 
  each 
  twice 
  as 
  

   long 
  as 
  the 
  second 
  ; 
  the 
  five 
  lower 
  joints 
  piceo-fulvous, 
  the 
  ante- 
  

   penultimate 
  and 
  penultimate 
  white, 
  the 
  rest 
  black. 
  Thorax 
  more 
  

   than 
  one-half 
  broader 
  than 
  long; 
  sides 
  broadly 
  margined, 
  straight 
  

   and 
  parallel 
  from 
  the 
  base 
  to 
  the 
  middle, 
  thence 
  obliquely 
  rounded 
  

   and 
  converging 
  towards 
  the 
  apex 
  ; 
  upper 
  surface 
  moderately 
  con- 
  

   vex, 
  impressed 
  with 
  three 
  shallow 
  ill-defined 
  foveae, 
  one 
  small 
  and 
  

   oblong-ovate, 
  placed 
  a 
  short 
  distance 
  in 
  front 
  of 
  the 
  basal, 
  and 
  two, 
  

  

  2h2 
  

  

  