﻿584' 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  with 
  fresh-water 
  sponges 
  on 
  the 
  under 
  side 
  of 
  submerged 
  logs. 
  I 
  found 
  

   them 
  mainly 
  on 
  logs 
  which 
  had 
  shed 
  their 
  bark, 
  but 
  this 
  may 
  have 
  been 
  

   due 
  to 
  the 
  greater 
  ease 
  of 
  discovery 
  on 
  the 
  smooth 
  logs. 
  

  

  HYMENOPTERA 
  

  

  A 
  few 
  representatives 
  of 
  this 
  order, 
  parasitic 
  on 
  aquatic 
  insects, 
  were 
  

   found. 
  Under 
  the 
  account 
  of 
  Chauliodes 
  on 
  page 
  547 
  there 
  has 
  

   been 
  mentioned 
  the 
  minute 
  egg 
  parasite, 
  Trichogramma 
  minu- 
  

   t 
  u 
  m 
  which 
  was 
  found 
  a 
  very 
  abundant 
  parasite 
  of 
  the 
  eggs 
  of 
  one 
  

   species 
  of 
  the 
  above 
  mentioned 
  genus, 
  destroying 
  at 
  least 
  70% 
  of 
  the 
  eggs. 
  

  

  A 
  new 
  species 
  of 
  Atractodes 
  was 
  found 
  parasitic 
  on 
  the 
  swale 
  fly, 
  

   Sepedon 
  fuscipennis, 
  mentioned 
  under 
  the 
  account 
  of 
  that 
  species 
  

   on 
  page 
  580. 
  A 
  description 
  of 
  the 
  parasite, 
  furnished 
  by 
  Mr 
  Ashmead, 
  

   under 
  the 
  name 
  Atractodes 
  sepedontis 
  Ashm. 
  is 
  given 
  on 
  

   page 
  588. 
  

  

  Four 
  species 
  of 
  parasitic 
  micro-hymenoptera 
  were 
  taken 
  in 
  the 
  first 
  

   qualitative 
  study 
  detailed 
  above 
  in 
  part 
  2, 
  page 
  403, 
  all 
  new 
  to 
  science. 
  

   Mr 
  Ashmead 
  has 
  at 
  our 
  request 
  furnished 
  descriptions 
  (see 
  pages 
  

   586-88). 
  

  

  A 
  few 
  sawflies, 
  collected 
  at 
  random 
  during 
  the 
  summer, 
  were 
  sub- 
  

   mitted 
  to 
  A. 
  D. 
  MacGillivray, 
  who 
  reports 
  on 
  them 
  as 
  follows. 
  

  

  LIST 
  AND 
  TWO 
  NEW 
  SPECIES 
  OF 
  SAWFLIES 
  

  

  BY 
  A. 
  D, 
  MACGILLIVRAY, 
  CORNELL 
  UNIVERSITY, 
  ITHACA 
  N. 
  Y. 
  

  

  Trichiosoma 
  angulatum 
  Kirby 
  

   Tentliredo 
  verticalis 
  Say 
  

   Teuthredo 
  rufipes 
  Say 
  

   Pachyprotasis 
  omega 
  Norton 
  

   Pontania 
  hyalina 
  Norton 
  

   Dolerus 
  bicolor 
  Norton 
  

   Strongyiogaster 
  annulosus 
  Norton 
  

  

  Pachynematus 
  corticosus 
  sp. 
  nov. 
  

   2 
  Black, 
  with 
  the 
  following 
  parts 
  yellowish 
  rufous, 
  the 
  clypeus, 
  the 
  

   tegulae, 
  the 
  apical 
  margin 
  of 
  the 
  pronotum, 
  the 
  apices 
  of 
  the 
  coxae, 
  

   the 
  trochanters, 
  the 
  femora, 
  the 
  tibiae, 
  except 
  the 
  posterior 
  pair 
  at 
  apex, 
  

   the 
  front 
  and 
  middle 
  tarsi, 
  the 
  middle 
  pair 
  slightly 
  infuscated 
  at 
  apex, 
  

   apical 
  margin 
  of 
  abdominal 
  tergites 
  two 
  to 
  four, 
  and 
  the 
  venter; 
  the 
  

   clypeus 
  roundly 
  emarginate, 
  the 
  lobes 
  broad 
  and 
  evenly 
  rounded, 
  the 
  

   head 
  expanded 
  back 
  of 
  the 
  eyes, 
  the 
  vertex 
  finely 
  punctate, 
  the 
  lateral 
  

   walls 
  of 
  the 
  ocellar 
  basin 
  sharp 
  and 
  moderately 
  well 
  defined, 
  the 
  frontal 
  

   crest 
  well 
  developed 
  and 
  not 
  interrupted, 
  the 
  antennal 
  fovea 
  deep 
  

   and 
  elongate; 
  the 
  antennae 
  elongate, 
  tapering, 
  the 
  third 
  segment 
  slightly 
  

   longer 
  than 
  the 
  fourth 
  ; 
  the 
  sheath 
  broad, 
  its 
  upper 
  margin 
  horizontal, 
  

  

  