﻿214 
  PROF. 
  M. 
  BEZZI. 
  

  

  V. 
  Subfamily 
  SCHISTOPTERINAE. 
  

  

  51. 
  Perirhithrum, 
  Bezzi. 
  53. 
  Rhochmopterum, 
  Speiser. 
  

   marshalli, 
  Bezzi. 
  neuropteripenne, 
  Speis. 
  

  

  52. 
  Khabdochaeta, 
  de 
  Meijere. 
  54. 
  Schistopterum, 
  Becker, 
  

   spinosa, 
  Lamb. 
  moebiusi. 
  Beck. 
  

  

  neavei, 
  Bezzi. 
  

  

  3|5 
  SfC 
  5j» 
  5p 
  3JC 
  3|! 
  

  

  The 
  addition 
  of 
  the 
  very 
  interesting 
  new 
  genus 
  which 
  follows 
  makes 
  necessary 
  a 
  

  

  modification 
  of 
  the 
  beginning 
  of 
  the 
  table 
  of 
  genera 
  in 
  my 
  first 
  paper, 
  p. 
  216, 
  nos. 
  

  

  1-5, 
  which 
  may 
  be 
  modified 
  as 
  follows 
  : 
  — 
  ■ 
  

  

  1(6). 
  Thoracic 
  chaetotaxy 
  incomplete, 
  hm., 
  prst., 
  dc. 
  and 
  st. 
  being 
  always 
  wanting 
  

   (and 
  also 
  the 
  prsc. 
  in 
  African 
  forms). 
  

  

  a(d). 
  Arista 
  bare 
  ; 
  abdomen 
  short 
  and 
  broad, 
  usually 
  broader 
  than 
  the 
  thorax 
  ; 
  

   wings 
  with 
  the 
  first 
  three 
  longitudinal 
  veins 
  closely 
  approximated, 
  the 
  

   anterior 
  cross-vein 
  long 
  and 
  oblique, 
  the 
  second 
  basal 
  cell 
  dilated 
  and 
  the 
  

   anal 
  cell 
  drawn 
  out 
  into 
  a 
  very 
  long 
  point 
  . 
  . 
  Subfam. 
  Dacinae. 
  

  

  b(c). 
  Only 
  two 
  sa. 
  present, 
  the 
  anterior 
  one 
  being 
  entirely 
  wanting 
  

  

  Dacus, 
  F. 
  (s. 
  str.). 
  

  

  c(b). 
  Three 
  sa., 
  the 
  anterior 
  one 
  being 
  well 
  developed 
  . 
  . 
  . 
  . 
  Tridacus, 
  Bezzi. 
  

  

  d(a). 
  Arista 
  plumose 
  ; 
  abdomen 
  long 
  and 
  linear, 
  more 
  narrow 
  than 
  the 
  thorax 
  ; 
  

   wings 
  with 
  the 
  first 
  three 
  veins 
  not 
  approximated, 
  the 
  anterior 
  cross-vein 
  

   short 
  and 
  placed 
  perpendicularly, 
  the 
  second 
  basal 
  cell 
  not 
  dilated 
  and 
  

   the 
  anal 
  cell 
  with 
  a 
  short 
  point 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  Subfam. 
  Adeaminae. 
  

  

  e(f). 
  Femora 
  not 
  spinose 
  beneath 
  ; 
  thoracic 
  suture 
  interrupted 
  in 
  the 
  middle 
  ; 
  

   antennae 
  shorter 
  than 
  the 
  face 
  ; 
  point 
  of 
  the 
  anal 
  cell 
  very 
  short 
  

  

  Sosiopsila, 
  gen. 
  nov. 
  

  

  f(e). 
  Femora 
  spinose 
  beneath 
  ; 
  thoracic 
  suture 
  complete 
  ; 
  antennae 
  much 
  longer 
  

   than 
  the 
  face 
  ; 
  point 
  of 
  the 
  anal 
  cell 
  longer 
  . 
  . 
  Meracanihomyia, 
  Hend. 
  

  

  II. 
  Subfam. 
  Adeaminae. 
  

   The 
  present 
  subfamily 
  is 
  here 
  accepted 
  in 
  a 
  wider 
  sense 
  than 
  that 
  attributed 
  

   to 
  it 
  by 
  Hendel 
  in 
  1914, 
  and 
  corresponding 
  to 
  that 
  adopted 
  by 
  me 
  in 
  1916.* 
  The 
  

   subfamily 
  was 
  believed 
  to 
  be 
  almost 
  exclusively 
  Oriental 
  ; 
  but 
  the 
  discovery 
  of 
  

   the 
  following 
  new 
  form 
  shows 
  that 
  it 
  is 
  probably 
  well 
  represented 
  in 
  the 
  Ethiopian 
  

   Region 
  also. 
  

  

  Sosiopsila, 
  gen. 
  nov. 
  

   The 
  present 
  new 
  genus 
  seems 
  to 
  be 
  allied 
  to 
  the 
  Oriental 
  Neosophira, 
  Hendel 
  

   (Gten. 
  Insect., 
  76, 
  pi. 
  iii, 
  figs. 
  57-59 
  and 
  64) 
  and 
  to 
  Colobostroter, 
  Enderlein 
  (Zool. 
  

   Jahrb., 
  xxxi, 
  p. 
  445, 
  fig. 
  T.), 
  but 
  is 
  distinct 
  in 
  having 
  well 
  developed 
  outer 
  vt., 
  and 
  

   also 
  in 
  having 
  only 
  a 
  pair 
  of 
  set. 
  (the 
  basal 
  pair) 
  ; 
  on 
  the 
  wings 
  the 
  third 
  longitudinal 
  

   vein 
  is 
  not 
  sinuous. 
  

  

  Head 
  in 
  front 
  view 
  more 
  broad 
  than 
  high, 
  a 
  little 
  broader 
  than 
  the 
  thorax 
  ; 
  occiput 
  

   convex 
  and 
  prominent, 
  with 
  developed 
  lower 
  swellings 
  ; 
  the 
  head 
  is 
  attached 
  to 
  

   the 
  thorax 
  about 
  in 
  the 
  same 
  manner 
  as 
  described 
  for 
  the 
  genus 
  Xanthorrhachista. 
  

  

  * 
  Bull. 
  Ent. 
  Ees., 
  vii, 
  October 
  1916, 
  p. 
  120. 
  

  

  