﻿364 
  JAMES 
  WATERSTON. 
  

  

  Abdomen 
  with 
  the 
  first 
  tergite 
  entirely 
  shining, 
  deep 
  green 
  with 
  a 
  bluish 
  tinge 
  ; 
  

   occupying 
  one-quarter 
  of 
  the 
  visible 
  surface. 
  Remaining 
  tergites 
  with 
  a 
  moderately 
  

   broad 
  shining 
  green 
  edge 
  before 
  the 
  suture 
  ; 
  the 
  rest 
  of 
  the 
  surface 
  dull 
  purplish 
  

   and 
  coarsely 
  reticulate. 
  Tergite 
  6 
  nearly 
  all 
  reticulate 
  ; 
  tergites 
  3-5 
  subequal 
  in 
  

   length, 
  while 
  1 
  and 
  6 
  are 
  longer 
  and 
  subequal. 
  

  

  Length, 
  2-1 
  mm. 
  ; 
  alar 
  expense, 
  3*75 
  mm. 
  

  

  S.W. 
  Persia 
  : 
  Ispahan, 
  1 
  $ 
  (M. 
  M. 
  Escalera, 
  Brit. 
  Mus.). 
  

  

  P. 
  illustris 
  somewhat 
  resembles 
  P. 
  eubius, 
  Walker 
  (Entedon 
  eubius, 
  Walker, 
  

   Mon. 
  Chalcid., 
  i, 
  p. 
  109, 
  1839), 
  but 
  it 
  is 
  a 
  smaller 
  insect, 
  differing 
  slightly 
  in 
  the 
  

   abdomen 
  and 
  legs. 
  Walker 
  also 
  describes 
  a 
  Pleurotropis 
  obscurella 
  from 
  the 
  Amur 
  

   (Cist. 
  Ent. 
  i, 
  pt. 
  2, 
  p. 
  320, 
  1874), 
  which 
  appears 
  to 
  be 
  a 
  true 
  Pleurotropis, 
  and, 
  

   according 
  to 
  the 
  author, 
  it 
  comes 
  near 
  P. 
  eubius 
  and 
  P. 
  caenus. 
  The 
  wings 
  are 
  

   " 
  cinereous," 
  so 
  that 
  the 
  species 
  would 
  probably 
  separate 
  off 
  at 
  the 
  beginning 
  of 
  

   the 
  table 
  with 
  P. 
  clinognathus. 
  P. 
  obscurella 
  has 
  probably 
  the 
  inner 
  edge 
  of 
  the 
  

   mandible 
  serrate. 
  

  

  Genus 
  Syntomosphyrum, 
  Forster. 
  

  

  Dr. 
  G. 
  D. 
  H. 
  Carpenter 
  has 
  forwarded 
  for 
  determination 
  from 
  Uganda 
  a 
  small 
  

   Eulophid 
  which 
  I 
  have 
  had 
  difficulty 
  in 
  placing. 
  The 
  species 
  falls 
  into 
  the 
  fifth 
  

   tribe, 
  Tetrastichini, 
  of 
  Ashmead's 
  scheme, 
  belonging 
  there 
  to 
  the 
  group 
  which 
  

   lacks 
  the 
  central 
  longitudinal 
  impressed 
  line 
  on 
  the 
  mid 
  lobe 
  of 
  the 
  mesonotum. 
  

   Of 
  the 
  genera 
  so 
  characterised 
  three 
  only 
  are 
  in 
  question, 
  viz. 
  : 
  — 
  Syntomosphyrum, 
  

   Forst., 
  (Verh. 
  d. 
  naturh. 
  Ver. 
  pr. 
  Rheinl., 
  xxv, 
  p. 
  60, 
  1878), 
  Trichaporus, 
  Forst. 
  

   (Hym. 
  Stud., 
  ii, 
  p. 
  84, 
  1856), 
  and 
  Tetrastichodes, 
  Ashm. 
  (Mem. 
  Carneg. 
  Mus., 
  i, 
  no. 
  4, 
  p. 
  

   349, 
  1904). 
  

  

  Trichaporus, 
  as 
  denned 
  by 
  Forster, 
  had 
  no 
  genotype 
  assigned 
  to 
  it, 
  but 
  Ashmead 
  

   (1904) 
  employed 
  the 
  name 
  in 
  describing 
  three 
  new 
  species 
  from 
  Brazil, 
  placing 
  these 
  

   at 
  the 
  same 
  time 
  with 
  Exurus 
  colliguayae, 
  Philippi 
  (Stett. 
  Ent. 
  Zeit., 
  xxxiv, 
  p. 
  296, 
  

   1873), 
  and 
  rejecting 
  Philippi's 
  genus 
  as 
  a 
  synonym. 
  The 
  African 
  insects 
  are, 
  

   I 
  believe, 
  generically 
  distinct 
  from 
  the 
  S. 
  American 
  forms, 
  and 
  Dr. 
  B. 
  C. 
  L. 
  Perkins, 
  

   to 
  whose 
  kindness 
  in 
  looking 
  at 
  some 
  preparations 
  I 
  am 
  much 
  indebted, 
  writes 
  that 
  

   they 
  have 
  nothing 
  to 
  do 
  with 
  Trichaporus 
  as 
  he 
  understands 
  the 
  genus. 
  

  

  Syntomosphyrum, 
  Forst., 
  and 
  Tetrastichodes, 
  Ashm., 
  are 
  probably 
  best 
  separated 
  

   by 
  the 
  scutellar 
  characters, 
  as 
  there 
  is 
  considerable 
  variation 
  in 
  the 
  antennae. 
  

   I 
  have 
  not 
  been 
  able 
  to 
  find 
  any 
  full 
  definition 
  of 
  Ashmead's 
  genus, 
  but 
  the 
  two 
  

   species 
  examined 
  (types) 
  show 
  two 
  sharp 
  median 
  impressed 
  lines 
  (besides 
  the 
  

   lateral 
  sulci 
  separating 
  the 
  dorsal 
  surface 
  from 
  the 
  sides) 
  on 
  the 
  scutellum. 
  Of 
  his 
  

   Syntomosphyrum, 
  Forster 
  distinctly 
  says 
  : 
  " 
  Das 
  Schildchen 
  hat 
  keine 
  langsfurchen," 
  

   referring, 
  I 
  take 
  it, 
  to 
  the 
  area 
  within 
  the 
  lateral 
  furrows. 
  To 
  this 
  description, 
  the 
  

   type 
  of 
  Syntomosphyrum 
  insular 
  e, 
  Ashm. 
  (Journ. 
  Linn. 
  Soc. 
  Lond. 
  ZooL, 
  xxv, 
  p. 
  181, 
  

   1894), 
  from 
  the 
  West 
  Indies, 
  which 
  I 
  have 
  examined, 
  and 
  S. 
  indicum, 
  Silvestri 
  

   (Boll. 
  Lab. 
  Zool. 
  Portici, 
  iv, 
  p. 
  228-245, 
  1910), 
  appear 
  to 
  conform. 
  I 
  have 
  

   accordingly 
  referred 
  the 
  African 
  examples 
  to 
  the 
  same 
  genus. 
  As 
  regards 
  the 
  

   condition 
  of 
  the 
  scutellum 
  in 
  the 
  West 
  Indian 
  species, 
  I 
  do 
  not 
  feel 
  completely 
  

   satisfied. 
  S. 
  insular 
  e, 
  Ashm., 
  is 
  a 
  very 
  black 
  form, 
  and 
  the 
  fine 
  lines, 
  even 
  if 
  present, 
  

  

  