﻿ON 
  SOME 
  AFRICAN 
  DELPHACIDAE. 
  143 
  

  

  2. 
  M. 
  kolophon 
  (Kirk.) 
  (fig. 
  6). 
  Fork 
  at 
  the 
  apex 
  of 
  the 
  genital 
  styles 
  much 
  larger 
  ; 
  

   no 
  black 
  mark 
  at 
  the 
  apex 
  of 
  clavus 
  ; 
  aedeagus 
  slightly 
  smaller, 
  with 
  smaller 
  spines. 
  

  

  3. 
  M. 
  nigeriensis, 
  var. 
  nov. 
  (figs 
  7 
  a, 
  7 
  b). 
  Fork 
  at 
  apex 
  of 
  genital 
  styles 
  wider 
  

   and 
  the 
  emargination 
  between 
  them 
  shallower 
  ; 
  a 
  dark 
  mark 
  at 
  the 
  apex 
  of 
  clavus. 
  

  

  These 
  forms 
  come 
  near 
  to 
  Kelisia 
  Jcirkaldyi, 
  Muir, 
  and 
  Kelisia 
  fieberi, 
  Muir, 
  and 
  

   eventually 
  will 
  be 
  placed 
  together 
  in 
  the 
  same 
  genus. 
  Until 
  I 
  can 
  revise 
  these 
  

   genera 
  I 
  prefer 
  to 
  let 
  them 
  remain 
  as 
  they 
  are 
  for 
  the 
  present. 
  

  

  Megamelus 
  furcifer, 
  var. 
  nigeriensis, 
  nov. 
  (figs. 
  7 
  a, 
  7 
  b). 
  

  

  (J. 
  Macropterous 
  ; 
  length 
  of 
  head, 
  prothorax 
  and 
  mesothorax 
  about 
  1 
  *5 
  times: 
  

   the 
  width 
  of 
  the 
  head 
  including 
  eyes, 
  vertex 
  slightly 
  longer 
  than 
  wide 
  ; 
  length 
  of 
  

   face 
  2 
  - 
  5 
  times 
  the 
  width, 
  narrowest 
  between 
  eyes, 
  furcation 
  of 
  median 
  carina 
  at 
  

   extreme 
  base 
  ; 
  antennae 
  terete, 
  reaching 
  beyond 
  the 
  base 
  of 
  clypeus, 
  second 
  joint 
  

   1 
  *4 
  times 
  the 
  length 
  of 
  first 
  ; 
  first 
  joint 
  of 
  hind 
  tarsus 
  as 
  long 
  as 
  the 
  other 
  two 
  together, 
  

   spur 
  longer 
  than 
  first 
  joint 
  of 
  tarsus, 
  large, 
  with 
  many 
  small 
  teeth 
  on 
  hind 
  margin. 
  

   Carinae 
  of 
  face 
  and 
  clypeus, 
  vertex, 
  middle 
  and 
  lateral 
  portions 
  of 
  pronotum,, 
  

   middle 
  of 
  mesonotum, 
  tegulae 
  and 
  base 
  of 
  abdomen 
  yellow 
  ; 
  face 
  and 
  clypeus 
  

   between 
  carinae, 
  medio-lateral 
  portions 
  of 
  pronotum, 
  lateral 
  portions 
  of 
  mesonotum. 
  

   and 
  greater 
  portion 
  of 
  abdomen 
  black 
  ; 
  front 
  and 
  middle 
  legs 
  dark 
  brown, 
  hind 
  legs 
  

   lighter 
  brown. 
  Tegmina 
  hyaline, 
  a 
  dark 
  mark 
  at 
  end 
  of 
  clavus 
  and 
  fuscous 
  over 
  

   apical 
  veins. 
  

  

  The 
  pygofer 
  is 
  similar 
  to 
  that 
  of 
  M 
  . 
  Jwlophon, 
  Kirk.,* 
  but 
  the 
  genital 
  styles 
  are 
  

   wider 
  at 
  the 
  apex 
  and 
  not 
  so 
  deeply 
  indented, 
  the 
  aedeagus 
  is 
  slightly 
  larger 
  and 
  

   the 
  spines 
  stronger. 
  

  

  Length, 
  2 
  mm. 
  ; 
  tegmen, 
  2 
  '3 
  mm. 
  

  

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

  

  Described 
  from 
  two 
  males. 
  

  

  Megamelus 
  flavolineatus, 
  sp. 
  nov. 
  (fig. 
  8). 
  

  

  (J. 
  Macropterous 
  ; 
  width 
  of 
  head 
  including 
  eyes 
  1 
  '6 
  times 
  the 
  length, 
  nearly^ 
  

   as 
  wide 
  as 
  the 
  pronotum 
  ; 
  length 
  of 
  vertex 
  1 
  *4 
  times 
  the 
  width 
  ; 
  antennae 
  reaching 
  

   beyond 
  the 
  base 
  of 
  clypeus, 
  first 
  joint 
  more 
  than 
  half 
  the 
  length 
  of 
  the 
  second 
  

  

  Fig. 
  8. 
  Megamelus 
  flavolineatus, 
  Muir, 
  sp. 
  n. 
  ; 
  a, 
  aedeagus 
  ; 
  b, 
  anal 
  

  

  spines 
  ; 
  c, 
  genital 
  style. 
  

  

  (1 
  to 
  1*7); 
  length 
  of 
  face 
  2*5 
  times 
  the 
  width, 
  slightly 
  narrowed 
  between 
  eyes, 
  

   sides 
  sub 
  parallel, 
  median 
  carina 
  forked 
  at 
  middle 
  of 
  face 
  ; 
  first 
  joint 
  of 
  hind 
  tarsus 
  

   as 
  long 
  as 
  the 
  other 
  two 
  together, 
  spur 
  nearly 
  as 
  long 
  as 
  the 
  first 
  joint 
  of 
  tarsus, 
  

   large, 
  thin, 
  with 
  many 
  small 
  teeth 
  on 
  the 
  hind 
  margin. 
  

  

  * 
  Haw. 
  Sugar 
  Planters 
  Assn. 
  Ent. 
  Bull, 
  iii, 
  pi. 
  xv, 
  figs. 
  9-10. 
  

   (C605) 
  e 
  

  

  