﻿CHALCIDOID 
  PARASITES 
  OF 
  PSYLLIDS. 
  51 
  

  

  Legs. 
  — 
  Tarsal 
  joints 
  1 
  and 
  2 
  in 
  ratio 
  21 
  : 
  15. 
  Mid 
  legs, 
  tibia 
  with 
  five 
  spines 
  

   at 
  apex 
  ; 
  tarsal 
  joints 
  1 
  and 
  2 
  in 
  ratio 
  35 
  : 
  20 
  ; 
  the 
  spines 
  on 
  joints 
  1-4 
  are 
  

   11-12:4:3:3. 
  

  

  Length, 
  1-3-1 
  -4 
  mm. 
  ; 
  alar 
  expanse, 
  2-1-2-3 
  mm. 
  

  

  Type 
  9 
  in 
  the 
  British 
  Museum 
  ; 
  one 
  of 
  a 
  series 
  of 
  four 
  taken 
  from 
  galls 
  of 
  

   a 
  Psyllid 
  (? 
  Trioza 
  sp.). 
  

  

  Jamaica 
  : 
  Hill 
  Gardens, 
  9.ii.l921 
  (C. 
  C. 
  Gowdey). 
  

  

  This 
  species 
  belongs 
  to 
  the 
  formosus, 
  Boh. 
  (1852) 
  cyanonotus, 
  Waterst. 
  (1917), 
  

   dactylopii, 
  How. 
  (1885), 
  section 
  of 
  the 
  genus. 
  It 
  should 
  be 
  easily 
  recognised 
  by 
  its 
  

   small 
  size, 
  colour, 
  and 
  antennal 
  characters. 
  

  

  The 
  following 
  genus 
  is, 
  as 
  a 
  rule, 
  placed 
  in 
  a 
  subfamily 
  (Signiphorinae) 
  of 
  the 
  

   Encyrtidae. 
  

  

  Genus 
  Signiphora, 
  Ashm. 
  

  

  Signiphora, 
  Ashmead, 
  Orange 
  Insects, 
  p. 
  30, 
  1880. 
  

  

  Genotype, 
  Signiphora 
  flavopalliata, 
  Ashm. 
  (I.e.). 
  

  

  Signiphora 
  noacki, 
  Ashm. 
  

  

  5. 
  noacki, 
  Ashmead, 
  Proc. 
  U.S. 
  Nat. 
  Mus., 
  xxii, 
  p. 
  410, 
  1900 
  

   Brazil 
  : 
  San 
  Paulo. 
  

  

  From 
  Psylla 
  sp. 
  on 
  a 
  wild 
  shrub, 
  bred 
  October 
  1897 
  (F. 
  Noack). 
  

   Type 
  $ 
  in 
  the 
  United 
  States 
  National 
  Museum. 
  

  

  Signiphora 
  unifasciata, 
  Ashm. 
  

  

  S. 
  unifasciata, 
  Ashmead, 
  Proc. 
  U.S. 
  Nat. 
  Mus., 
  xxii, 
  p. 
  411, 
  1900. 
  

  

  U.S.A. 
  : 
  Florida, 
  Georgiana 
  (Dr. 
  Wittfield). 
  

  

  From 
  Ceropsylla 
  sideroxyli, 
  Riley. 
  

  

  Type 
  $ 
  in 
  the 
  United 
  States 
  National 
  Museum. 
  

  

  Of 
  the 
  following 
  species 
  I 
  know 
  nothing 
  at 
  first 
  hand 
  : 
  Agonioneurus, 
  Westwood 
  

   (1833), 
  is 
  a 
  synonym 
  oiAphelinus, 
  Dalm. 
  (1820), 
  but 
  (from 
  description) 
  I 
  am 
  doubtful 
  

   whether 
  Andre's 
  insect 
  really 
  belongs 
  here. 
  

  

  Agonioneurus 
  pictus, 
  And. 
  

  

  Agonioneurus 
  pictus, 
  Ed. 
  Andre, 
  Ann. 
  Soc. 
  Ent. 
  France, 
  (5) 
  viii, 
  p. 
  85, 
  26. 
  v. 
  1878. 
  

  

  France 
  : 
  Cote-d'or. 
  

  

  From 
  galls 
  of 
  Trioza 
  centranthi, 
  Vallot, 
  on 
  Centranthus 
  angustifolius, 
  D.C. 
  

  

  Bred 
  from 
  the 
  same 
  larvae 
  that 
  gave 
  rise 
  to 
  Encyrtus 
  triozae, 
  And., 
  and 
  considered 
  

   by 
  Andre 
  to 
  be 
  probably 
  a 
  hyperparasite. 
  

  

  Family 
  Pteromalidae, 
  Walker. 
  

  

  Genus 
  Pachyneuron, 
  Walker. 
  

  

  The 
  species 
  described 
  below 
  runs 
  down 
  to 
  Pachyneuron, 
  Walker 
  (Ent. 
  Mag., 
  i, 
  

   p. 
  371, 
  1833) 
  of 
  which 
  genus, 
  however, 
  it 
  is 
  not 
  a 
  typical 
  exponent, 
  differing 
  as 
  it 
  

   does 
  from 
  P. 
  formosum, 
  Walk. 
  (loc. 
  cot., 
  p. 
  380) 
  in 
  the 
  shortened 
  first 
  funicular 
  

   joint. 
  

  

  Pachyneuron 
  crassiculme, 
  sp. 
  nov. 
  

  

  $. 
  Head 
  and 
  thorax 
  black, 
  with 
  at 
  most 
  faint 
  violet 
  submetallic 
  reflections. 
  

   Abdomen 
  blackish-brown, 
  not 
  quite 
  so 
  dark 
  as 
  the 
  rest 
  of 
  the 
  body, 
  with 
  submetallic 
  

   reflections 
  only 
  on 
  the 
  two 
  basal 
  tergites. 
  Antennae 
  blackish-brown, 
  a 
  little 
  paler 
  on 
  

  

  (6160) 
  n2 
  

  

  