﻿88 
  On 
  the 
  Dynastid 
  Genus 
  Lonchotus. 
  

  

  Hab. 
  N. 
  Madagascar. 
  

  

  The 
  species 
  is 
  represented 
  by 
  a 
  single 
  male 
  specimen 
  in 
  the 
  

   British 
  Museum 
  collection. 
  It 
  is 
  about 
  the 
  size 
  of 
  L. 
  crassus, 
  

   but 
  relatively 
  broader 
  and 
  shorter. 
  The 
  prothorax 
  is 
  irregu- 
  

   larly 
  punctured 
  and 
  has 
  smooth 
  areas 
  at 
  the 
  middle 
  of 
  the 
  

   base 
  and 
  sides. 
  The 
  hind 
  angles 
  are 
  almost 
  right 
  angles. 
  

   The 
  thoracic 
  cavity 
  is 
  about 
  as 
  broad 
  as 
  it 
  is 
  long, 
  reaching 
  

   to 
  near 
  the 
  base, 
  and, 
  as 
  in 
  all 
  the 
  species 
  except 
  L. 
  crassus, 
  

   is 
  produced 
  into 
  two 
  points 
  on 
  each 
  side. 
  The 
  elytra 
  are 
  

   closely 
  and 
  very 
  coarsely 
  punctured, 
  the 
  punctures 
  not 
  

   forming 
  distinct 
  lines. 
  The 
  propygidium 
  is 
  produced 
  and 
  its 
  

   stridulatory 
  strise 
  are 
  fine 
  and 
  close, 
  with 
  a 
  still 
  more 
  finely 
  

   sculptured 
  area 
  on 
  each 
  side. 
  

  

  LoncJiotus 
  rolundus, 
  sp. 
  n. 
  

  

  Niger 
  vel 
  piceus, 
  nitidus, 
  corpore 
  subtus 
  rufo, 
  broviter 
  rufo-hirto, 
  

   ovatus, 
  rotundus, 
  subglobosus 
  ; 
  capite 
  subrugoso, 
  antice 
  attenuato, 
  

   baud 
  inciso 
  ; 
  pronoto 
  omnino 
  rugose 
  punctato, 
  absque 
  areis 
  lsevi- 
  

   gatis, 
  lateribus 
  medio 
  subangulatis, 
  angulis 
  posticis 
  obtusis, 
  basi 
  

   leviter 
  trisinuato 
  ; 
  scutello 
  paulo 
  punctulato 
  ; 
  elytris 
  grosse 
  haud 
  

   profunde 
  punctatis, 
  punctis 
  annulatis, 
  parum 
  regularibus, 
  lateri- 
  

   bus 
  lsevigatis, 
  apicibus 
  obsolete 
  punctatis, 
  stria 
  integra 
  profunda 
  

   suturali 
  ; 
  propygidio 
  postice 
  producto, 
  striis 
  stridulatoriis 
  sub- 
  

   tilissimis 
  dense 
  et 
  late 
  praedito 
  ; 
  pygidio 
  medio 
  nitido, 
  lateribus 
  

   minute 
  punctato-rugosis 
  ; 
  mandibulis 
  extus 
  subquadratis, 
  vix 
  

   incisis 
  : 
  

  

  S 
  , 
  capite 
  sat 
  breviter 
  acute 
  cornuto 
  ; 
  pronoto 
  late 
  et 
  prof 
  undo 
  

   excavato, 
  lateribus 
  utrinque 
  biacuminatis. 
  

  

  Long. 
  25-28 
  mm. 
  ; 
  lat. 
  max. 
  14-16 
  mm. 
  

  

  Hab. 
  N. 
  Madagascar 
  : 
  Nossi 
  Be. 
  

  

  There 
  are 
  two 
  male 
  specimens 
  in 
  the 
  British 
  Museum. 
  It 
  

   is 
  a 
  compact 
  globose 
  species, 
  differing 
  from 
  all 
  the 
  rest 
  by 
  the 
  

   form 
  of 
  the 
  mandibles, 
  which 
  are 
  very 
  prominent 
  externally 
  

   and 
  not 
  distinctly 
  lobed. 
  The 
  pronotum 
  is 
  very 
  strongly 
  and 
  

   deeply 
  punctured, 
  without 
  smooth 
  spaces. 
  The 
  scutellum 
  is 
  

   not 
  quite 
  smooth, 
  but 
  bears 
  an 
  angulate 
  line 
  of 
  rather 
  con- 
  

   fused 
  fine 
  punctures. 
  The 
  elytra 
  are 
  coarsely 
  and 
  irregu- 
  

   larly 
  but 
  not 
  very 
  deeply 
  punctured, 
  and 
  the 
  propygidium 
  

   bears 
  very 
  fine 
  stridulatory 
  strise 
  which 
  extend 
  without 
  inter- 
  

   ruption 
  across 
  the 
  whole 
  median 
  part. 
  The 
  thoracic 
  cavity 
  

   of 
  the 
  male 
  extends 
  nearly 
  to 
  the 
  hind 
  margin 
  and 
  is 
  wide 
  

   and 
  deep. 
  

  

  Lonchotus 
  astovensis, 
  sp. 
  n. 
  

   Fusco-brunneus, 
  nitidus, 
  pectore 
  sat 
  dense 
  rufo-hirto, 
  breviter 
  

  

  