﻿Mr. 
  G. 
  Lewis 
  on 
  new 
  Species 
  of 
  Histeridse. 
  279 
  

  

  This 
  is 
  a 
  capture 
  made 
  by 
  Dr. 
  Livingstone, 
  and 
  I 
  am 
  in- 
  

   debted 
  to 
  my 
  friend 
  the 
  llev. 
  H. 
  S. 
  Gorham 
  for 
  the 
  specimen. 
  

  

  Platysoma 
  baliolum, 
  n. 
  sp. 
  

  

  Ovatum, 
  subdepression, 
  nigrum, 
  nitidum, 
  punctulatum 
  ; 
  fronte 
  im- 
  

   preBsa, 
  stria 
  integra 
  supra 
  oculos 
  valida 
  ; 
  pronoto 
  transverso, 
  stria 
  

   integra 
  pone 
  oculos 
  crenata 
  : 
  elytris 
  striis 
  l 
  a 
  -4 
  m 
  integris, 
  5 
  a 
  basi, 
  6 
  a 
  

   medio 
  abbreviates 
  ; 
  propygidio 
  transversim, 
  pygidio 
  undique, 
  grosse 
  

   punctatis 
  ; 
  prosterno 
  hand 
  striato 
  ; 
  mesosterno 
  leviter 
  emargi- 
  

   nato, 
  stria 
  integra 
  tenuiter 
  impressa 
  ; 
  tibiis 
  anticis 
  4-dentaiis. 
  

  

  Long. 
  2| 
  millim. 
  

  

  This 
  little 
  species 
  is 
  about 
  one 
  third 
  of 
  the 
  stature 
  of 
  P. 
  

   capense, 
  "Wiedem., 
  and 
  resembles 
  it 
  in 
  form 
  and 
  sculpture. 
  

   In 
  baUohim 
  the 
  punctuation 
  of 
  the 
  elytra 
  is 
  much 
  finer 
  than 
  

   that 
  of 
  the 
  thorax, 
  the 
  fourth 
  elytral 
  stria 
  is 
  complete, 
  and 
  

   the 
  fifth 
  nearly 
  so 
  ; 
  the 
  presternum 
  is 
  narrow 
  beyond 
  the 
  coxa, 
  

   the 
  basal 
  lobe 
  being 
  almost 
  circular 
  in 
  outline. 
  In 
  capense 
  the 
  

   prosternum 
  is 
  narrow 
  and 
  the 
  basal 
  lobe 
  scarcely 
  widened 
  out 
  

   at 
  all, 
  and 
  the 
  surfaces 
  of 
  the 
  sterna 
  are 
  much 
  more 
  conspicu- 
  

   ously 
  punctulate. 
  

  

  llab. 
  Zanzibar 
  {Bajfray). 
  

  

  Platysoma 
  punctulatum, 
  Lewis, 
  is 
  a 
  variety 
  of 
  P. 
  capense, 
  

   Wiedem., 
  and 
  the 
  locality 
  given 
  for 
  it 
  — 
  Assam 
  — 
  is 
  probably 
  

   an 
  error. 
  

  

  Platysoma 
  delicatum, 
  n. 
  sp. 
  

  

  Oblongo-ovatum, 
  parum 
  eonvexum, 
  rufo-piceum, 
  nitidum 
  ; 
  fronte 
  

   vix 
  coneava, 
  punctata, 
  supra 
  oculos 
  elevata 
  ; 
  pronoto 
  in 
  medio 
  

   levissirue 
  longitudinaliter 
  impresso, 
  sparse 
  et 
  minime 
  profunde 
  

   punctato, 
  stria 
  pone 
  oculos 
  interrupta, 
  parte 
  in 
  medio 
  utrinque 
  

   hamata 
  ; 
  elytris 
  apicibus 
  punctulalis, 
  striis 
  dorsalibus 
  l 
  a 
  -6 
  m 
  integris 
  ; 
  

   propygidio 
  pygidioque 
  sparse 
  punctulatis 
  ; 
  prosterno 
  lobo 
  grosse 
  

   punctato, 
  bistriato, 
  striis 
  utrinque 
  junctis 
  ; 
  mesosterno 
  late 
  emar- 
  

   ginato 
  margin 
  atoque 
  ; 
  tibiis 
  anticis 
  7-S-dentatis, 
  posticis 
  3-4- 
  

   spinosis. 
  

  

  Long. 
  2 
  millim. 
  

  

  This 
  species 
  is 
  unlike 
  any 
  other 
  I 
  know, 
  but 
  it 
  may 
  be 
  a 
  

   type 
  of 
  Platysoma. 
  peculiar 
  to 
  South 
  America, 
  in 
  which 
  

   country, 
  however, 
  the 
  genus 
  is 
  very 
  poorly 
  represented. 
  

   In 
  the 
  form 
  of 
  the 
  thoracic 
  stria 
  it 
  corresponds 
  with 
  some 
  of 
  

   the 
  cylindrical 
  species, 
  such 
  as 
  P. 
  Aubei, 
  Mars. 
  (Mon. 
  1861, 
  

   p. 
  152, 
  t. 
  iii. 
  fig. 
  12). 
  The 
  thoracic 
  punctures 
  are 
  shallow, 
  

   somewhat 
  oblong, 
  and 
  finely 
  cut, 
  and 
  the 
  elytral 
  striae 
  are 
  all 
  

   complete. 
  

  

  Hob. 
  Tambillo, 
  Brazil 
  (Reitler). 
  

  

  