﻿1902.] 
  Catalogue 
  of 
  the 
  Colcoptera 
  of 
  South 
  Africa. 
  669 
  

  

  Hab. 
  Cape 
  Colony 
  (Bathurst, 
  Graham's 
  Town, 
  Port 
  Elizabeth, 
  

   King 
  William's 
  Town, 
  Somerset 
  East). 
  

  

  Eriesthis 
  decora, 
  n. 
  spec. 
  

  

  Black, 
  with 
  the 
  elytra 
  chestnut-red 
  ; 
  head 
  and 
  prothorax 
  clothed 
  

   with 
  comparatively 
  short 
  villose 
  orange-yellow 
  hairs 
  covering 
  the 
  

   greatest 
  part 
  of 
  the 
  surface, 
  but 
  along 
  the 
  margin 
  there 
  is 
  a 
  moderately 
  

   broad 
  band 
  of 
  small 
  yellow 
  scales 
  ; 
  scutellum 
  densely 
  scaly 
  ; 
  elytra 
  

   very 
  briefly 
  and 
  closely 
  hairy 
  and 
  having 
  a 
  supra-marginal 
  band 
  of 
  

   very 
  closely 
  set, 
  small 
  orange 
  scales 
  continued 
  along 
  the 
  apical 
  part 
  

   and 
  ascending 
  along 
  the 
  suture 
  where 
  it 
  unites 
  with 
  the 
  lower 
  of 
  

   two 
  transverse 
  bands 
  of 
  similar 
  scales 
  which 
  are 
  bi-interrupted 
  on 
  

   each 
  side, 
  the 
  basal 
  part 
  is 
  also 
  more 
  or 
  less 
  densely 
  scaly 
  ; 
  pro- 
  

   pygidium 
  and 
  pygidium 
  clothed 
  with 
  yellow 
  squamose 
  hairs 
  which 
  

   are 
  less 
  squamose 
  and 
  turn 
  to 
  greyish 
  on 
  the 
  abdomen 
  ; 
  clypeus 
  a 
  

   little 
  obliquely 
  attenuate 
  laterally, 
  more 
  deeply 
  emarginate 
  and 
  more 
  

   distinctly 
  dentate 
  laterally 
  in 
  the 
  female 
  than 
  in 
  the 
  male, 
  being 
  

   straight 
  and 
  reflexed 
  in 
  the 
  latter 
  ; 
  maxillae 
  armed 
  with 
  four 
  short 
  

   teeth, 
  the 
  apical 
  and 
  basal 
  of 
  which 
  are 
  bifid 
  ; 
  inner 
  claw 
  of 
  hind 
  

   legs 
  small. 
  

  

  This 
  species 
  can 
  be 
  distinguished 
  from 
  the 
  other 
  allied 
  species 
  by 
  

   the 
  disposition 
  on 
  the 
  elytra 
  of 
  the 
  scales, 
  which 
  form 
  a 
  distinct 
  

   marginal 
  band. 
  

  

  Length 
  8-J— 
  9-J 
  mm. 
  ; 
  width 
  5-5J 
  mm. 
  

  

  Hab. 
  Cape 
  Colony 
  (Burghersdorp) 
  ; 
  Transvaal 
  (Potchefstroom, 
  

   Boksburg). 
  

  

  KOBISABA, 
  n. 
  gen. 
  

  

  Mentum 
  narrow, 
  elongate, 
  oblong 
  in 
  the 
  posterior 
  part, 
  a 
  little 
  

   narrowed 
  in 
  the 
  anterior, 
  slightly 
  emarginate 
  at 
  tip, 
  lobes 
  of 
  ligula 
  

   broad 
  ; 
  upper 
  lobe 
  of 
  maxillae 
  robust, 
  horny, 
  rounded 
  outwardly, 
  

   oblique 
  inwardly, 
  concave 
  and 
  armed 
  with 
  four 
  strong 
  teeth 
  set 
  

   opposite 
  each 
  other 
  ; 
  inner 
  lobe 
  sharply 
  dentate 
  at 
  the 
  tip, 
  apical 
  

   joint 
  of 
  labial 
  palpi 
  thick, 
  swollen, 
  pyriform, 
  apical 
  point 
  of 
  maxillary 
  

   palpi 
  elongate, 
  fusiform 
  ; 
  clypeus 
  broader 
  than 
  long 
  at 
  the 
  base, 
  and 
  

   sub-dentate 
  there 
  laterally, 
  slightly 
  attenuate 
  towards 
  the 
  apex, 
  

   where 
  it 
  is 
  sharply 
  tri-dentate 
  ; 
  prothorax 
  diagonally 
  narrowed 
  

   laterally 
  from 
  the 
  apex 
  to 
  the 
  median 
  part, 
  straight 
  thence 
  to 
  the 
  

   base 
  where 
  it 
  is 
  broadly 
  triangular 
  ; 
  scutellum 
  moderately 
  narrow, 
  

   elongate 
  and 
  sharply 
  triangular 
  ; 
  elytra 
  much 
  broader 
  than 
  the 
  

   prothorax 
  owing 
  to 
  the 
  great 
  ampliation 
  of 
  the 
  humeral 
  parts, 
  

   gradually 
  and 
  strongly 
  narrowed 
  from 
  there 
  towards 
  the 
  apex 
  ; 
  

  

  