﻿New 
  Species 
  of 
  Strepsipterous 
  Insects. 
  143 
  

  

  dark 
  transverse 
  line 
  at 
  the 
  base, 
  interrupted 
  by 
  the 
  passage 
  to 
  the 
  

   abdominal 
  region. 
  

  

  Found 
  in 
  sheltered 
  places 
  on 
  the 
  peninsula 
  of 
  Prevesa. 
  This 
  

   Prcsopis 
  does 
  not, 
  however, 
  nidificate 
  in 
  briars. 
  

  

  Diagnosis 
  of 
  Specimens 
  presented 
  to 
  the 
  Society. 
  

  

  1. 
  Xenos 
  Rossii 
  $ 
  in 
  the 
  act 
  of 
  emerging 
  from 
  the 
  pupa-case, 
  

   having 
  already 
  cast 
  off 
  the 
  pupa 
  skin 
  ; 
  the 
  ventral 
  region 
  upper- 
  

   most. 
  (With 
  Poiisles 
  5 
  captured 
  July 
  15th.) 
  

  

  2. 
  Pupa-case 
  of 
  another 
  from 
  the 
  same 
  species 
  of 
  Polistes, 
  ex- 
  

   tracted 
  entire, 
  showing 
  indented 
  orifice; 
  together 
  with 
  the 
  oper- 
  

   cidum 
  of 
  the 
  same 
  ; 
  the 
  cast 
  off 
  pellicle 
  of 
  the 
  nymph 
  at 
  the 
  

   extremity 
  within. 
  

  

  3. 
  Xenos 
  Rossii, 
  two 
  females, 
  protruding 
  from 
  the 
  abdominal 
  

   interstices 
  oi 
  Poiisles. 
  (Captured 
  July 
  5th.) 
  

  

  4. 
  Hexapod 
  larvae 
  of 
  Xenos 
  Rossii. 
  (From 
  another 
  PoUstes, 
  

   July 
  18th.) 
  

  

  5. 
  Xenos 
  Heydenii 
  $, 
  with 
  Ancistrocerus 
  dejlenclus 
  $. 
  

  

  6. 
  Hylecthrus 
  ricbi 
  $ 
  in 
  the 
  act 
  of 
  emerging 
  from 
  the 
  pupa- 
  

   case 
  ; 
  the 
  dorsal 
  region 
  uppermost. 
  (With 
  Hylceus 
  rubicola, 
  var. 
  

   versicolor 
  $ 
  .) 
  

  

  7. 
  Hylceus 
  versicolor 
  5 
  bearing 
  two 
  pupa-cases 
  of 
  Hylecthrus 
  

   rubi 
  ^, 
  with 
  circular 
  orifices. 
  

  

  8. 
  Pupa-cases 
  of 
  Hylecthrus 
  rubi 
  $, 
  with 
  the 
  opercula 
  in 
  sit6, 
  

   one 
  of 
  which 
  protruded 
  from 
  ventral 
  segments 
  of 
  the 
  bee. 
  The 
  

   parasites 
  apparently 
  immature 
  within. 
  (With 
  Hylceus 
  versicolor.) 
  

  

  9. 
  Hylecthrus 
  rubi 
  $ 
  in 
  imago 
  state. 
  

  

  10. 
  Hylecthrus 
  rubi 
  5 
  on 
  first 
  emerging; 
  a 
  bred 
  specimen. 
  

   (With 
  Hylceus 
  rubicola 
  $ 
  .) 
  

  

  11. 
  Another 
  bred 
  specimen 
  of 
  the 
  same 
  in 
  a 
  more 
  advanced 
  

   state. 
  

  

  12. 
  Pseudo-pupa 
  of 
  Hylecthrus 
  rubi 
  $ 
  previously 
  to 
  protru- 
  

   sion. 
  (With 
  nymph 
  of 
  Hylceus 
  versicolor; 
  the 
  apical 
  segments 
  

   removed.) 
  

  

  13. 
  Feeding 
  larvae 
  of 
  Hylecthrus, 
  in 
  different 
  positions. 
  (In 
  

   section 
  of 
  abdomen 
  of 
  nymph 
  of 
  Hylceus 
  versicolor.) 
  

  

  14. 
  Nymph 
  of 
  Hylecthrus 
  rubi 
  $, 
  with 
  pellicle 
  longitudinally 
  

   separating 
  preparatory 
  to 
  exit. 
  

  

  In 
  Spirits. 
  

  

  15. 
  Nymph 
  of 
  Hylceus 
  versicolor, 
  the 
  last 
  three 
  segments 
  of 
  

   abdomen 
  removed, 
  showing 
  two 
  male 
  pseudo-pupae 
  of 
  Hylecthrus 
  

   rubi, 
  not 
  previously 
  apparent.* 
  

  

  16. 
  Pseudo-pupa 
  of 
  male 
  parasite, 
  as 
  recognized 
  by 
  eye-shades, 
  

   and 
  proboscis 
  working 
  for 
  egress 
  within 
  abdomen 
  of 
  the 
  bee. 
  

   (With 
  newly-developed 
  Hylceus 
  versicolor.) 
  

  

  • 
  From 
  the 
  rostrum 
  of 
  that 
  to 
  the 
  right 
  (the 
  left 
  in 
  PI. 
  XVI. 
  fig. 
  5) 
  a 
  portion 
  of 
  

   yellow 
  fluid 
  was 
  ejected 
  on 
  handling 
  the 
  nymph 
  of 
  the 
  bee, 
  whence 
  the 
  buccal 
  

   orifice 
  may 
  be 
  considered 
  in 
  a 
  normal 
  condition 
  at 
  this 
  period. 
  

  

  