﻿1902.] 
  Catalogue 
  of 
  the 
  Coleoptera 
  of 
  South 
  Africa. 
  849 
  

  

  of 
  the 
  dorsal 
  abdominal 
  segments 
  uncovered 
  ; 
  propygidium 
  very 
  

   wide, 
  pygidium 
  declivous 
  ; 
  anterior 
  tibiae 
  bi- 
  or 
  tri-dentate 
  outwardly, 
  

   claws 
  of 
  the 
  anterior 
  and 
  intermediate 
  legs 
  single 
  and 
  slightly 
  cleft 
  

   (G. 
  atomaria, 
  femorata), 
  or 
  double 
  and 
  each 
  cleft 
  in 
  the 
  anterior 
  only 
  

   (G. 
  strigosa), 
  but 
  the 
  claws 
  of 
  the 
  hind 
  legs 
  are 
  always 
  single 
  and 
  

   simple 
  ; 
  hind 
  femora 
  very 
  robust 
  and 
  with 
  the 
  trochanters 
  spinose, 
  

   the 
  tibiae 
  carinate 
  underneath, 
  and 
  dentate 
  or 
  angular 
  near 
  the 
  knee 
  

   (femorata, 
  ornata, 
  strigosa), 
  or 
  slender 
  and 
  simple; 
  apical 
  spur 
  of 
  

   posterior 
  tibiae 
  distinct 
  in 
  the 
  males 
  of 
  some 
  species, 
  absent 
  in 
  

   others. 
  

  

  The 
  distinctive 
  characters 
  separating 
  this 
  genus 
  from 
  Monochelus 
  

   are 
  the 
  longer 
  club 
  of 
  the 
  antennae, 
  and 
  also 
  the 
  shape 
  of 
  the 
  mentum, 
  

   the 
  apical 
  part 
  of 
  which 
  has 
  the 
  angles 
  sharply 
  dentate, 
  but 
  this 
  

   character 
  does 
  not 
  hold 
  good 
  for 
  all 
  the 
  species 
  ; 
  the 
  shape 
  of 
  the 
  

   clypeus 
  varies 
  very 
  much, 
  and 
  in 
  several 
  species 
  it 
  is 
  quite 
  similar 
  to 
  

   that 
  of 
  some 
  Monochelus 
  ; 
  the 
  development 
  of 
  the 
  hind 
  legs 
  and 
  

   trochanters, 
  which 
  are 
  so 
  conspicuous 
  in 
  Monochelus, 
  is 
  also 
  to 
  be 
  

   found 
  in 
  some 
  species 
  of 
  Gymnolonia. 
  The 
  main 
  characteristic 
  

   distinction 
  as 
  given 
  by 
  Burmeister, 
  i.e., 
  that 
  all 
  the 
  tarsi 
  have 
  a 
  

   single 
  claw, 
  while 
  in 
  Monochelus, 
  the 
  anterior 
  and 
  sometimes 
  the 
  

   median 
  ones 
  are 
  double, 
  does 
  not 
  hold 
  good 
  for 
  all 
  the 
  species, 
  either 
  

   in 
  Gymnoloma 
  or 
  Monochelus. 
  

  

  The 
  genus 
  stands 
  as 
  constituted 
  by 
  Burmeister, 
  except 
  that 
  one 
  

   species, 
  B. 
  lineolata, 
  has 
  been 
  transferred 
  to 
  another 
  genus 
  ; 
  G. 
  

   elegantula, 
  leucojjhcea 
  and 
  sulcicollis, 
  Blanch., 
  do 
  not 
  belong 
  to 
  this 
  

   genus 
  ; 
  G. 
  elegantula 
  belongs 
  to 
  Monochelus 
  ; 
  G. 
  leucophcea 
  to 
  

   Dichelus 
  ; 
  G. 
  sulcicollis 
  to 
  Knysna 
  ; 
  this 
  last 
  species 
  is 
  identical 
  with 
  

   K. 
  humeralis, 
  Burm. 
  

  

  Key 
  to 
  the 
  Species. 
  

  

  A 
  2 
  . 
  Hind 
  femora 
  with 
  sharply 
  spinose 
  trochanters. 
  

  

  B3. 
  Clypeus 
  triangular, 
  sharp 
  at 
  the 
  tip. 
  

  

  C 
  2 
  . 
  Anterior 
  tibiae 
  bi-dentate 
  outwardly 
  in 
  the 
  male. 
  

  

  Black, 
  with 
  the 
  femora 
  red 
  ; 
  elytra 
  bi-costate 
  on 
  each 
  side, 
  

   and 
  having 
  along 
  the 
  suture 
  a 
  partly 
  obliterated 
  line 
  of 
  

   greyish 
  scales 
  femorata. 
  

  

  Black, 
  with 
  the 
  elytra 
  testaceous, 
  without 
  scales, 
  and 
  

  

  plainly 
  bi-costate 
  tibialis. 
  

  

  B 
  2 
  . 
  Clypeus 
  obliquely 
  narrowed, 
  sinuate 
  at 
  the 
  tip. 
  

  

  Black, 
  with 
  the 
  elytra 
  chocolate-brown, 
  non-costate, 
  and 
  

   having 
  on 
  each 
  side 
  two 
  discoidal 
  and 
  one 
  sutural 
  band 
  

   of 
  greyish 
  scales 
  perplexa. 
  

  

  54 
  

  

  