﻿686 
  Transactions 
  South 
  African 
  Philosophical 
  Society, 
  [vol. 
  xii. 
  

  

  Pachycnema 
  rostrata, 
  Burm. 
  , 
  

   Handb. 
  d. 
  Entom., 
  iv., 
  1, 
  p. 
  61. 
  

  

  Black 
  in 
  the 
  male, 
  dark 
  brown 
  in 
  the 
  female, 
  prothorax 
  with 
  a 
  

   scaly 
  outer 
  margin 
  and 
  two 
  patches 
  of 
  scales 
  on 
  each 
  side 
  of 
  the 
  

   median 
  longitudinal 
  groove 
  ; 
  elytra 
  with 
  three 
  transverse 
  rows 
  of 
  

   four, 
  three, 
  and 
  two 
  scaly 
  patches 
  on 
  each 
  side, 
  these 
  scales 
  are 
  

   white 
  in 
  the 
  male, 
  yellow 
  in 
  the 
  female 
  ; 
  head 
  deeply 
  punctate, 
  

   clypeus 
  very 
  elongate, 
  sulcate 
  in 
  the 
  middle 
  and 
  with 
  the 
  two 
  apical 
  

   teeth 
  set 
  close 
  to 
  one 
  another 
  and 
  much 
  reflexed 
  ; 
  prothorax 
  slightly 
  

   attenuated 
  laterally 
  in 
  front, 
  somewhat 
  rounded 
  and 
  emarginate 
  

   towards 
  the 
  base, 
  distinctly 
  convex, 
  very 
  deeply 
  punctured, 
  somewhat 
  

   deeply 
  sulcate 
  longitudinally 
  in 
  the 
  posterior 
  part, 
  and 
  clothed 
  with 
  

   dense, 
  long, 
  erect 
  black 
  hairs, 
  in 
  the 
  male 
  there 
  is 
  only 
  a 
  marginal 
  

   band 
  of 
  white 
  scales 
  all 
  round 
  and 
  a 
  supra-lateral 
  impression 
  on 
  each 
  

   side 
  of 
  the 
  disk, 
  probably 
  filled 
  with 
  white 
  scales 
  at 
  an 
  early 
  stage, 
  

   but 
  in 
  the 
  female 
  the 
  marginal 
  scaly 
  band 
  is 
  broader 
  and 
  the 
  scales 
  

   bright 
  orange-yellow, 
  the 
  disk 
  is 
  sprinkled 
  with 
  similar 
  scales, 
  not, 
  as 
  

   a 
  rule, 
  closely 
  set, 
  but 
  forming 
  two 
  irregular 
  patches 
  on 
  each 
  side 
  ; 
  

   scutellum 
  long, 
  sharp 
  and 
  scaly 
  ; 
  elytra 
  distinctly 
  ampliated 
  

   laterally 
  in 
  both 
  sexes, 
  and 
  with 
  the 
  humeral 
  callus 
  almost 
  forming 
  

   the 
  angle 
  of 
  the 
  shoulder, 
  they 
  are 
  set 
  with 
  series 
  of 
  long, 
  black 
  

   bristly 
  hairs 
  which 
  are 
  as 
  long 
  on 
  the 
  disk 
  as 
  along 
  the 
  suture, 
  they 
  

   have 
  on 
  each 
  side 
  a 
  sub-basal 
  transverse 
  row 
  of 
  four 
  round 
  scaly 
  

   patches, 
  a 
  post-median 
  of 
  three, 
  and 
  an 
  apical 
  one 
  of 
  two, 
  which 
  

   latter 
  do 
  occasionally 
  coalesce, 
  and 
  as 
  often 
  as 
  not 
  are 
  united 
  along 
  

   the 
  suture 
  in 
  the 
  female 
  with 
  the 
  juxta-sutural 
  patch 
  of 
  the 
  second 
  

   row 
  ; 
  abdomen 
  and 
  pygidium 
  covered 
  with 
  white 
  or 
  yellow 
  scales 
  

   according 
  to 
  the 
  sex, 
  and 
  set 
  with 
  long, 
  bristly 
  hairs 
  ; 
  pectus 
  very 
  

   densely 
  pubescent 
  ; 
  posterior 
  tibiae 
  very 
  slender, 
  but 
  slightly 
  more 
  

   swollen 
  in 
  the 
  male 
  than 
  in 
  the 
  female, 
  the 
  four 
  basal 
  joints 
  of 
  tarsi 
  

   elongate 
  in 
  both 
  sexes, 
  fifth 
  not 
  quite 
  as 
  long 
  as 
  all 
  the 
  first 
  three 
  

   taken 
  together, 
  claw 
  simple. 
  

  

  Length 
  8-9 
  mm. 
  ; 
  width 
  5-6 
  mm. 
  

  

  Hab. 
  Cape 
  Colony 
  (Eiversdale, 
  Worcester). 
  

  

  Pachycnema 
  namaqua, 
  n. 
  spec. 
  

  

  Head 
  and 
  prothorax 
  black, 
  the 
  latter 
  with 
  an 
  ill-defined 
  marginal 
  

   band 
  of 
  white 
  scales, 
  and 
  with 
  four, 
  somewhat 
  indistinct, 
  and 
  often 
  

   obliterated 
  small 
  round 
  patches 
  ; 
  elytra 
  red, 
  shining 
  ; 
  legs 
  black 
  ; 
  

   in 
  the 
  female 
  there 
  is 
  a 
  broadly 
  interrupted 
  supra-marginal 
  band, 
  

   and 
  a 
  small 
  patch 
  along 
  the 
  suture 
  of 
  yellow 
  scales, 
  while 
  in 
  the 
  

   male 
  there 
  are 
  only 
  a 
  few 
  white 
  scales 
  here 
  and 
  there 
  ; 
  pygidium 
  

  

  