﻿274 
  GUY 
  A. 
  K. 
  MARSHALL. 
  

  

  Length, 
  5 
  '5-7 
  mm. 
  ; 
  breadth, 
  3-4 
  mm. 
  

  

  Transvaal 
  : 
  East 
  Hand, 
  30.1.1919. 
  

  

  Described 
  from 
  three 
  specimens. 
  

  

  In 
  its 
  colouring 
  and 
  general 
  sculpture 
  this 
  species 
  most 
  closely 
  resembles 
  

   P. 
  (Strophosomus) 
  gravis, 
  GyL, 
  but 
  is 
  readily 
  distinguished 
  from 
  it 
  by 
  its 
  remarkably 
  

   flattened 
  form 
  and 
  almost 
  oblong 
  elytra. 
  

  

  Recorded 
  as 
  injuring 
  the 
  foliage 
  of 
  young 
  orange 
  trees. 
  

  

  Protostrophus 
  noxius, 
  sp. 
  nov. 
  (Plate 
  xix, 
  fig. 
  1). 
  

  

  O. 
  Colour 
  black, 
  with 
  dense 
  sandy 
  brown 
  scaling 
  above, 
  variegated 
  with 
  some 
  

   paler 
  and 
  darker 
  markings, 
  and 
  uniform 
  sandy 
  grey 
  beneath 
  ; 
  the 
  prothorax 
  with 
  

   usually 
  a 
  broad 
  lanceolate 
  darker 
  median 
  stripe 
  and 
  a 
  broader 
  pale 
  lateral 
  stripe 
  ; 
  

   the 
  scaling 
  on 
  the 
  elytra 
  brown, 
  with 
  a 
  broad 
  whitish 
  stripe 
  on 
  interval 
  6 
  and 
  usually 
  

   with 
  a 
  macular 
  stripe 
  of 
  alternating 
  dark 
  brown 
  and 
  pale 
  spots 
  along 
  striae 
  1, 
  

   2 
  and 
  5. 
  

  

  Head 
  separated 
  from 
  the 
  rostrum 
  by 
  an 
  abbreviated 
  and 
  deeply 
  curved 
  stria, 
  

   the 
  forehead 
  smooth, 
  with 
  a 
  single 
  deep 
  furrow, 
  and 
  densely 
  clothed 
  with 
  over- 
  

   lapping 
  scales 
  and 
  raised 
  scale-like 
  setae 
  ; 
  the 
  eyes 
  moderately 
  convex, 
  deepest 
  about 
  

   the 
  middle, 
  projecting 
  strongly 
  backwards, 
  but 
  the 
  hind 
  edge 
  of 
  the 
  orbit 
  not 
  

   produced. 
  Rostrum 
  a 
  little 
  more 
  than 
  half 
  as 
  long 
  as 
  the 
  basal 
  width 
  (5 
  : 
  9), 
  very 
  

   strongly 
  narrowed 
  from 
  base 
  to 
  apex, 
  with 
  the 
  sides 
  slightly 
  sinuate 
  ; 
  the 
  upper 
  

   surface 
  quite 
  flat, 
  with 
  only 
  a 
  very 
  shallow 
  indistinct 
  impression 
  in 
  the 
  middle 
  of 
  

   the 
  apical 
  half 
  ; 
  the 
  mandibles 
  squamose, 
  the 
  mandibular 
  appendages 
  gently 
  

   curved, 
  simple 
  and 
  tusk-like, 
  flattened 
  ventrally 
  and 
  with 
  the 
  surface 
  partly 
  striate 
  

   longitudinally. 
  Antennae 
  with 
  joint 
  1 
  of 
  the 
  funicle 
  about 
  as 
  long 
  as 
  the 
  next 
  

   three, 
  joint 
  2 
  about 
  as 
  long 
  as 
  broad, 
  the 
  remainder 
  broader 
  than 
  long. 
  Prothorax, 
  

   twice 
  as 
  broad 
  as 
  long, 
  a 
  little 
  broader 
  than 
  the 
  base 
  of 
  the 
  elytra, 
  the 
  basal 
  margin 
  

   strongly 
  arcuate, 
  the 
  apical 
  margin 
  somewhat 
  narrower 
  and 
  trisinuate, 
  the 
  lateral 
  

   margins 
  subdenticulate 
  and 
  gently 
  rounded, 
  broadest 
  at 
  the 
  middle 
  ; 
  the 
  upper 
  

   surface 
  strongly 
  convex 
  transversely 
  and 
  flat 
  longitudinally, 
  quite 
  smooth 
  and 
  

   evenly 
  covered 
  with 
  dense 
  scaling, 
  without 
  any 
  trace 
  of 
  a 
  furrow 
  or 
  carina. 
  Elytra 
  

   broadly 
  ovate, 
  widest 
  behind 
  the 
  middle, 
  very 
  broadly 
  rounded 
  behind, 
  the 
  basal 
  

   margin 
  strongly 
  sinuate, 
  fitting 
  closely 
  to 
  the 
  prothorax, 
  with 
  the 
  external 
  angles 
  

   slightly 
  projecting 
  ; 
  the 
  extremely 
  shallow 
  striae 
  bear 
  rows 
  of 
  punctures 
  that 
  are 
  

   visible 
  through 
  the 
  scaling, 
  each 
  containing 
  a 
  minute 
  scale 
  ; 
  the 
  intervals 
  broad, 
  

   almost 
  flat, 
  densely 
  covered 
  with 
  almost 
  circular 
  overlapping 
  scales 
  equal 
  to 
  those 
  

   on 
  the 
  prothorax 
  and 
  each 
  with 
  a 
  row 
  of 
  short 
  recumbent 
  scale-like 
  setae. 
  Legs 
  

   with 
  the 
  front 
  tibiae 
  moderately 
  incurved 
  at 
  the 
  apex, 
  the 
  inner 
  surface 
  with 
  two 
  

   or 
  three 
  spine-like 
  setae, 
  the 
  apical 
  margin 
  with 
  a 
  row 
  of 
  five 
  or 
  six 
  stout 
  teeth 
  

   and 
  an 
  additional 
  one 
  on 
  the 
  outer 
  edge 
  ; 
  the 
  hind 
  tibiae 
  with 
  two 
  internal 
  spines 
  

   near 
  the 
  apex, 
  and 
  the 
  corbels 
  densely 
  scaly 
  ; 
  joint 
  2 
  of 
  the 
  front 
  tarsi 
  much 
  broader 
  

   than 
  long. 
  Sternum 
  with 
  the 
  mesepisterna 
  separated 
  from 
  the 
  elytra. 
  

  

  Length, 
  3*25-3 
  "6 
  ; 
  breadth, 
  2-2*2 
  mm. 
  

  

  Orange 
  Free 
  State 
  : 
  Clocolan, 
  20.vii.1915. 
  

  

  Described 
  from 
  three 
  specimens. 
  

  

  