﻿142 
  

  

  F. 
  MUIR. 
  

  

  between 
  eyes 
  and 
  at 
  apex, 
  furcation 
  of 
  median 
  carina 
  one-third 
  from 
  base 
  ; 
  antennae 
  

   reaching 
  to 
  near 
  middle 
  of 
  clypeus, 
  first 
  joint 
  slightly 
  shorter 
  than 
  second 
  ; 
  first 
  

   joint 
  of 
  hind 
  tarsus 
  as 
  long 
  as 
  the 
  other 
  two 
  together, 
  spur 
  slightly 
  shorter 
  than 
  

   first 
  joint 
  of 
  tarsus, 
  with 
  many 
  small 
  teeth 
  on 
  hind 
  margin. 
  

  

  Fig. 
  4. 
  Dicranotropis 
  ibadaiensis, 
  Muir, 
  sp. 
  n. 
  ; 
  

   a, 
  py 
  gofer, 
  back 
  view; 
  b, 
  do., 
  side 
  view. 
  

  

  Light 
  brown, 
  nearly 
  black 
  over 
  clypeus, 
  coxae 
  and 
  abdomen 
  ; 
  carinae 
  of 
  thorax 
  

   lighter, 
  traces 
  of 
  fighter 
  spots 
  on 
  face. 
  Tegmina 
  hyaline, 
  a 
  curved, 
  fuscous 
  mark 
  

   from 
  cross- 
  veins 
  over 
  cubitus 
  extending 
  along 
  veins 
  to 
  the 
  apex 
  of 
  media 
  and 
  

   cubitus, 
  veins 
  basad 
  of 
  cross-veins 
  yellowish, 
  distad 
  of 
  cross-veins 
  darker, 
  granules 
  

   few 
  and 
  small 
  ; 
  wings 
  hyaline 
  with 
  brown 
  veins. 
  

  

  Pygofer 
  as 
  figured 
  (fig. 
  4). 
  

  

  Length, 
  1*9 
  mm. 
  ; 
  tegmen, 
  2.8 
  mm. 
  

  

  Nigeria 
  : 
  Oleke-Meji, 
  Ibadan, 
  1914 
  (J. 
  C. 
  Bridwell). 
  

  

  Described 
  from 
  one 
  male. 
  

  

  Genus 
  Megamelus, 
  Fieber. 
  

  

  There 
  are 
  a 
  number 
  of 
  closely 
  allied 
  species 
  of 
  this 
  genus 
  having 
  similar 
  facies, 
  

   with 
  a 
  wide 
  distribution. 
  Only 
  a 
  close 
  comparison 
  of 
  series 
  from 
  various 
  localities 
  

   will 
  enable 
  one 
  to 
  decide 
  where 
  one 
  species 
  ends 
  and 
  another 
  begins. 
  I 
  sank 
  

   M. 
  kolophon 
  (Kirk.) 
  into 
  M. 
  furcifer 
  (Horv.), 
  but 
  I 
  believe 
  it 
  will 
  be 
  better 
  to 
  retain 
  

   the 
  name 
  as 
  a 
  variety 
  until 
  more 
  material 
  has 
  been 
  studied. 
  I 
  now 
  recognise 
  three 
  

   varieties 
  of 
  this 
  species, 
  viz. 
  :— 
  

  

  1. 
  M. 
  furcifer 
  (Horv.) 
  (fig. 
  5). 
  The 
  fork 
  at 
  apex 
  of 
  the 
  genital 
  styles 
  small 
  ; 
  

   clavus 
  with 
  a 
  small 
  black 
  mark 
  at 
  apex. 
  

  

  Fig. 
  5. 
  Megamelus 
  furcifer, 
  Horv., 
  genital 
  style. 
  

  

  6. 
  „ 
  kolophon. 
  Kirk 
  ,, 
  ,, 
  

  

  7. 
  „ 
  nigeriensis, 
  Muir, 
  var. 
  n. 
  ; 
  a, 
  aedeagus 
  ; 
  b, 
  genital 
  

  

  style. 
  

  

  