﻿848 
  Transactions 
  South 
  African 
  Philosophical 
  Society, 
  [vol. 
  xii. 
  

  

  apex 
  ; 
  pygidium 
  sloping 
  forwards 
  ; 
  anterior 
  tibiae 
  tri-dentate, 
  but 
  

   the 
  basal 
  tooth 
  is 
  very 
  short 
  and 
  the 
  other 
  two 
  are 
  very 
  slanting 
  ; 
  

   claws 
  of 
  the 
  front 
  and 
  intermediate 
  tarsi 
  double, 
  unequal, 
  the 
  stouter 
  

   one 
  of 
  the 
  fore 
  legs 
  cleft, 
  hind 
  claw 
  single, 
  simple. 
  

  

  Intermediate 
  in 
  shape 
  between 
  some 
  species 
  of 
  Mo?wchelus 
  and 
  

   Idutyiva. 
  Its 
  main 
  distinctive 
  character 
  is 
  the 
  very 
  long, 
  flabellate 
  

   club 
  of 
  the 
  antennas. 
  

  

  Thabina 
  simplex, 
  n. 
  spec. 
  

  

  Male 
  : 
  Black, 
  head 
  rugose 
  and 
  having 
  some 
  very 
  short, 
  sub- 
  

   flavescent 
  hairs 
  in 
  the 
  frontal 
  part, 
  clypeus 
  renexed 
  all 
  round 
  ; 
  

   prothorax 
  plainly 
  grooved 
  longitudinally 
  in 
  the 
  centre, 
  ampliated 
  

   and 
  rounded 
  laterally 
  in 
  the 
  middle, 
  broadly 
  and 
  deeply 
  punctured, 
  

   each 
  puncture 
  bearing 
  a 
  long, 
  somewhat 
  fulvous 
  bristle, 
  and 
  in 
  the 
  

   furrow 
  as 
  well 
  as 
  along 
  the 
  outer 
  margin 
  are 
  some 
  whitish, 
  appressed 
  

   squamose 
  hairs 
  ; 
  elytra 
  somewhat 
  bi-costulate 
  on 
  each 
  side 
  and 
  

   having 
  along 
  the 
  suture 
  a 
  broad 
  band 
  of 
  partly 
  erect 
  squamose 
  white 
  

   hairs, 
  and 
  a 
  discoidal 
  one 
  not 
  quite 
  as 
  broad 
  as 
  the 
  juxta-sutural, 
  and 
  

   sometimes 
  reduced 
  to 
  a 
  faint 
  line, 
  they 
  are 
  deeply 
  but 
  not 
  closely 
  

   punctured, 
  each 
  puncture 
  bearing 
  a 
  long 
  bristle 
  ; 
  pygidial 
  part 
  and 
  

   abdomen 
  clothed 
  with 
  appressed 
  greyish 
  squamose 
  hairs, 
  which 
  are 
  

   not 
  dense 
  on 
  the 
  pygidium 
  ; 
  legs 
  bristly 
  and 
  pubescent 
  ; 
  hind 
  ones 
  

   not 
  especially 
  robust, 
  intermediate 
  and 
  hind 
  tibiae 
  with 
  an 
  apical 
  

   spur, 
  fifth 
  joint 
  of 
  the 
  hind 
  tarsi 
  nearly 
  as 
  long 
  as 
  the 
  three 
  preceding- 
  

   taken 
  together 
  and 
  bi-dentate 
  underneath. 
  

  

  Length 
  5 
  mm. 
  ; 
  width 
  2-J- 
  mm. 
  

  

  Sab. 
  Transvaal 
  (Pretoria, 
  Potchefstroom). 
  

  

  Gen. 
  GYMNOLOMA, 
  Burm., 
  

   Handb. 
  d. 
  Entomol., 
  iv., 
  1, 
  p. 
  161. 
  

   Mentum 
  ampliate 
  near 
  the 
  base, 
  attenuate 
  laterally 
  towards 
  the 
  

   apex, 
  not 
  deeply 
  constricted 
  near 
  it, 
  arcuately 
  emarginate 
  there, 
  and 
  

   with 
  the 
  angles 
  mostly 
  sharply 
  dentate 
  and 
  slightly 
  fasciculate, 
  lobe 
  of 
  

   maxillae 
  long, 
  robust, 
  armed 
  with 
  six 
  sharp 
  teeth 
  curved 
  inwardly 
  ; 
  

   apical 
  joint 
  of 
  labial 
  and 
  maxillary 
  palpi 
  sub-fusiform 
  ; 
  clypeus 
  

   sharply 
  triangular 
  (G. 
  atomaria), 
  truncate 
  and 
  simple 
  (G. 
  strigosa), 
  

   or 
  truncate 
  and 
  dentate 
  laterally 
  (G. 
  omata) 
  ; 
  club 
  of 
  antennae 
  as 
  

   long 
  as 
  the 
  five 
  joints 
  preceding, 
  sixth 
  joint 
  briefly 
  lamellate; 
  

   prothorax 
  oblique 
  laterally, 
  in 
  the 
  anterior 
  part 
  and 
  from 
  there 
  

   straight 
  or 
  little 
  ampliate 
  ; 
  scutellum 
  short, 
  bluntly 
  rounded 
  at 
  the 
  

   tip 
  ; 
  elytra 
  narrowed 
  laterally 
  towards 
  the 
  posterior 
  part, 
  strongly 
  

   sinuate 
  below 
  the 
  humeral 
  part, 
  and 
  leaving 
  a 
  somewhat 
  broad 
  part 
  

  

  