﻿858 
  Transactions 
  South 
  African 
  Philosophical 
  Society, 
  [vol. 
  xii. 
  

  

  abdomen 
  of 
  the 
  male 
  compressed 
  laterally, 
  pygidium 
  sloping 
  for- 
  

   wards 
  ; 
  legs 
  long, 
  slender, 
  similar 
  in 
  both 
  sexes, 
  anterior 
  tibiae 
  

   tri-dentate 
  outwardly, 
  the 
  teeth 
  oblique 
  and 
  equi-distant, 
  the 
  basal 
  

   one 
  very 
  small 
  ; 
  anterior 
  claw 
  double, 
  the 
  outer 
  one 
  very 
  small 
  and 
  

   simple, 
  the 
  inner 
  one 
  slightly 
  cleft, 
  intermediate 
  ones 
  single 
  but 
  

   cleft, 
  posterior 
  ones 
  single, 
  simple 
  ; 
  in 
  the 
  male 
  the 
  claw 
  of 
  the 
  

   intermediate 
  legs 
  has 
  a 
  conspicuous 
  tooth 
  underneath, 
  and 
  the 
  

   metasternum 
  has 
  on 
  each 
  side 
  of 
  the 
  anterior 
  part 
  a 
  broad, 
  oblique, 
  

   tomentose 
  patch, 
  while 
  the 
  rest 
  of 
  the 
  surface 
  is 
  scaly. 
  

  

  Key 
  to 
  the 
  Species. 
  

  

  Clypeus 
  deeply 
  emarginate 
  at 
  the 
  apex 
  ; 
  elytra 
  with 
  the 
  whole 
  

   interval 
  between 
  the 
  suture 
  and 
  the 
  first 
  costule 
  filled 
  with 
  a 
  broad 
  

   band 
  of 
  flavescent 
  white 
  hairs 
  « 
  humeralis. 
  

  

  Clypeus 
  slightly 
  emarginate 
  at 
  the 
  apex 
  ; 
  whole 
  surface 
  of 
  elytra 
  

   covered 
  with 
  small, 
  somewhat 
  closely 
  set 
  sub-flavescent 
  scales 
  . 
  . 
  sulcicollix. 
  

  

  Knysna 
  humeralis, 
  Burm., 
  

   Ischnochelus 
  humeralis, 
  Handb. 
  d. 
  Entomol., 
  iv., 
  1, 
  p. 
  132. 
  

  

  Male 
  : 
  Black, 
  legs 
  with 
  the 
  exception 
  of 
  the 
  hind 
  tibiae 
  reddish, 
  

   antennae 
  of 
  the 
  same 
  colour 
  as 
  the 
  legs, 
  but 
  with 
  the 
  club 
  infuscate 
  ; 
  

   prothorax 
  with 
  a 
  median 
  longitudinal 
  band 
  of 
  whitish 
  scales 
  and 
  a 
  

   supra-lateral 
  one 
  not 
  very 
  well 
  denned 
  ; 
  elytra 
  with 
  a 
  broad 
  band 
  

   of 
  similar 
  but 
  a 
  little 
  more 
  flavescent 
  scales 
  at 
  a 
  short 
  distance 
  from 
  

   the 
  suture, 
  pygidial 
  part, 
  abdomen 
  and 
  pectus 
  scaly 
  ; 
  head 
  scabrose, 
  

   sparingly 
  hairy, 
  clypeus 
  distinctly 
  narrowed, 
  strongly 
  bi-dentate 
  at 
  

   the 
  tip 
  ; 
  prothorax 
  with 
  a 
  deep 
  median 
  longitudinal 
  furrow 
  reaching 
  

   from 
  the 
  apex 
  to 
  the 
  base, 
  the 
  anterior 
  and 
  lateral 
  margins 
  are 
  

   fringed 
  with 
  long, 
  stiff 
  bristles, 
  the 
  sides 
  are 
  deeply 
  but 
  not 
  closely 
  

   punctured, 
  the 
  punctures 
  being 
  filled 
  with 
  scales, 
  but 
  between 
  the 
  

   median 
  furrow 
  and 
  the 
  punctures 
  there 
  is 
  a 
  longitudinal 
  smooth 
  

   area 
  ; 
  scutellum 
  not 
  scaly 
  in 
  my 
  examples, 
  but 
  the 
  scales 
  may 
  

   have 
  been 
  rubbed 
  off; 
  elytra 
  nearly 
  parallel, 
  but 
  still 
  a 
  little 
  

   attenuate 
  laterally 
  towards 
  the 
  apex, 
  very 
  little 
  sinuate, 
  they 
  are 
  

   rugulose 
  and 
  have 
  on 
  each 
  side 
  two 
  slight 
  costae 
  the 
  outer 
  of 
  which 
  

   is 
  hardly 
  distinct, 
  and 
  the 
  interval 
  between 
  the 
  first 
  and 
  the 
  suture 
  

   is 
  filled 
  with 
  the 
  band 
  of 
  scales, 
  which 
  is 
  slightly 
  oblique 
  and 
  reaches 
  

   from 
  the 
  base 
  to 
  a 
  very 
  short 
  distance 
  from 
  the 
  apex 
  ; 
  the 
  pygidium 
  

   is 
  scaly 
  like 
  the 
  propygidium 
  and 
  the 
  abdomen, 
  but 
  the 
  scales 
  are 
  

   much 
  more 
  scattered 
  ; 
  the 
  claw 
  of 
  the 
  intermediate 
  legs 
  has 
  a 
  

   conspicuous, 
  sub-horizontal 
  tooth 
  underneath 
  in 
  the 
  male. 
  

  

  