﻿258 
  PKOF. 
  M. 
  BEZZI. 
  

  

  of 
  eyes, 
  etc. 
  ; 
  moreover 
  the 
  type-species, 
  L. 
  nitidula, 
  Hendel, 
  from 
  Peru, 
  has 
  a. 
  

   different 
  wing 
  pattern, 
  with 
  more 
  numerous 
  hyaline 
  spots, 
  which 
  are 
  disposed 
  

   in 
  rows 
  along 
  the 
  longitudinal 
  veins. 
  In 
  the 
  new 
  material 
  there 
  is 
  the 
  following 
  

   new 
  species, 
  which 
  is 
  the 
  first 
  to 
  be 
  known 
  from 
  West 
  Africa. 
  

  

  Spathulina 
  bioculata, 
  sp. 
  nov. 
  

  

  Closely 
  allied 
  to 
  semiatra 
  and 
  running 
  down 
  to 
  it 
  in 
  my 
  table 
  (1918, 
  p. 
  28), 
  but 
  

   at 
  once 
  distinguished 
  by 
  the 
  pale 
  yellowish 
  macrochaetae 
  of 
  the 
  head 
  and 
  thorax, 
  

   and 
  by 
  the 
  presence 
  of 
  four 
  (not 
  three) 
  hyaline 
  spots 
  in 
  the 
  second 
  posterior 
  cell, 
  

   and 
  of 
  two 
  hyaline 
  dots 
  in 
  the 
  first 
  posterior 
  cell.* 
  

  

  9- 
  Length 
  of 
  body 
  2'5 
  mm. 
  ; 
  of 
  ovipositor 
  about 
  1 
  mm. 
  ; 
  of 
  wing 
  3*5 
  mm. 
  

  

  Head 
  not 
  depressed, 
  in 
  front 
  view 
  about 
  as 
  high 
  as 
  broad, 
  in 
  side 
  view 
  narrower 
  

   than 
  high 
  ; 
  it 
  is 
  entirely 
  pale 
  yellowish, 
  more 
  whitish 
  on 
  the 
  face, 
  and 
  blackish 
  

   but 
  grey-dusted 
  in 
  the 
  middle 
  of 
  the 
  occiput 
  ; 
  middle 
  frontal 
  stripe 
  more 
  yellow 
  

   in 
  the 
  apical 
  half, 
  and 
  there 
  with 
  some 
  scattered 
  yellowish 
  hairs 
  ; 
  all 
  the 
  bristles 
  

   are 
  pale 
  yellowish, 
  those 
  of 
  the 
  hind 
  border 
  quite 
  whitish 
  ; 
  there 
  are 
  three 
  i. 
  or., 
  

   but 
  the 
  apical 
  one 
  is 
  only 
  half 
  as 
  long 
  as 
  the 
  others 
  ; 
  oc. 
  long 
  and 
  strong 
  ; 
  ocp. 
  

   rather 
  acute. 
  Antennae 
  pale 
  yellowish, 
  shorter 
  than 
  the 
  face, 
  with 
  the 
  pubescent 
  

   third 
  joint 
  as 
  long 
  as 
  the 
  first 
  two 
  joints 
  together 
  and 
  a 
  little 
  pointed 
  at 
  its 
  upper 
  

   terminal 
  angle 
  ; 
  arista 
  microscopically 
  pubescent. 
  The 
  hairs 
  of 
  the 
  lower 
  occipital 
  

   border 
  and 
  of 
  the 
  chin 
  are 
  whitish. 
  Palpi 
  whitish 
  ; 
  proboscis 
  yellow, 
  rather 
  thick, 
  

   as 
  long 
  as 
  the 
  lower 
  border 
  of 
  the 
  head, 
  with 
  the 
  terminal 
  portion 
  thick, 
  bent 
  back- 
  

   wards 
  and 
  a 
  little 
  shorter 
  than 
  the 
  basal 
  one. 
  Thorax 
  black 
  on 
  the 
  back, 
  but 
  

   clothed 
  with 
  a 
  dense 
  opaque, 
  grey 
  dust 
  ; 
  a 
  narrow 
  stripe 
  just 
  above 
  the 
  notopleural 
  

   line 
  is 
  reddish 
  yellow 
  ; 
  the 
  pleurae 
  are 
  black, 
  with 
  a 
  darker 
  grey 
  dust, 
  but 
  they 
  

   are 
  yellowish 
  below 
  the 
  prothoracic 
  stigma 
  ; 
  the 
  scutellum 
  is 
  grey 
  on 
  the 
  middle, 
  

   broadly 
  yellowish 
  at 
  the 
  borders 
  and 
  below 
  ; 
  the 
  mesophragma 
  is 
  black, 
  clothed 
  

   with 
  a 
  dark 
  grey 
  dust, 
  like 
  the 
  pleurae. 
  The 
  short 
  pubescence 
  of 
  the 
  back 
  is 
  pale 
  

   yellowish 
  like 
  that 
  of 
  the 
  pleurae, 
  which 
  is 
  longer 
  and 
  more 
  sparse 
  ; 
  all 
  the 
  bristles 
  

   are 
  yellowish 
  ; 
  the 
  a. 
  set. 
  are 
  as 
  long 
  as 
  the 
  b. 
  set. 
  and 
  are 
  decussate 
  ; 
  the 
  dc. 
  are 
  

   placed 
  before 
  the 
  line 
  of 
  the 
  a. 
  sa. 
  Halteres 
  whitish. 
  Abdomen 
  shining 
  black, 
  

   with 
  black 
  hairs 
  and 
  black 
  bristles 
  ; 
  the 
  first 
  two 
  segments 
  are 
  dark 
  reddish-brown 
  

   at 
  the 
  sides, 
  and 
  the 
  first 
  three 
  segments 
  have 
  a 
  narrow 
  reddish 
  hind 
  border 
  ; 
  

   ovipositor 
  depressed, 
  shining 
  black. 
  Legs, 
  including 
  coxae 
  and 
  tarsi, 
  entirely 
  

   pale 
  yellowish 
  ; 
  their 
  hairs 
  are 
  whitish, 
  the 
  spur 
  of 
  the 
  middle 
  tibiae 
  reddish 
  ; 
  hind 
  

   tibiae 
  with 
  a 
  well 
  developed 
  posterior 
  row 
  of 
  bristles. 
  Wings 
  proportionally 
  long 
  

   and 
  broad 
  ; 
  veins 
  pale 
  yellowish 
  at 
  base 
  and 
  on 
  the 
  hyaline 
  dots, 
  blackish 
  on 
  the 
  

   dark 
  parts. 
  Third 
  and 
  fourth 
  veins 
  distinctly 
  diverging 
  at 
  the 
  end 
  ; 
  hind 
  cross- 
  

   vein 
  perpendicular, 
  a 
  little 
  curved 
  outwardly 
  and 
  slightly 
  longer 
  than 
  its 
  distance 
  

   from 
  the 
  small 
  one. 
  The 
  pattern 
  is 
  as 
  in 
  semiatra, 
  with 
  the 
  following 
  differences 
  : 
  

   the 
  subapical 
  hyaline 
  spot 
  of 
  the 
  submarginal 
  cell 
  is 
  much 
  broader 
  ; 
  there 
  are 
  

   two 
  small 
  hyaline 
  dots 
  in 
  the 
  first 
  posterior 
  cell, 
  the 
  apical 
  one 
  being 
  twice 
  as 
  broad 
  

   as 
  that 
  placed 
  over 
  the 
  upper 
  end 
  of 
  the 
  hind 
  cross-vein 
  ; 
  the 
  second 
  posterior 
  cell 
  

  

  * 
  These 
  two 
  dots 
  are 
  not 
  shown 
  in 
  Loew's 
  figure, 
  pi. 
  ii, 
  fig. 
  12 
  ; 
  but 
  in 
  the 
  description 
  

   they 
  are 
  recorded 
  as 
  being 
  sometimes 
  present, 
  it 
  seems 
  therefore 
  that 
  it 
  is 
  a 
  somewhat 
  

   variable 
  character. 
  

  

  