﻿252 
  Mr. 
  F. 
  Smith's 
  Notes 
  on 
  the 
  

  

  same 
  genus 
  I 
  think 
  there 
  cannot 
  exist 
  even 
  the 
  shadow 
  of 
  a 
  

   doubt. 
  

  

  I 
  have 
  for 
  some 
  years 
  very 
  closely 
  investigated 
  the 
  economy 
  of 
  

   our 
  indigenous 
  aculeate 
  Hijmenoptera, 
  and 
  I 
  am 
  fully 
  sensible 
  of 
  

   the 
  fact, 
  that 
  the 
  same 
  species 
  exhibits 
  under 
  different 
  influences 
  

   and 
  circumstances 
  considerable 
  variety 
  in 
  the 
  various 
  phases 
  of 
  its 
  

   development; 
  and, 
  as 
  an 
  illustration 
  of 
  this, 
  I 
  will 
  quote 
  two 
  

   passages 
  from 
  Mr. 
  Newport's 
  papers. 
  In 
  one 
  read 
  on 
  the 
  20th 
  of 
  

   March, 
  1849, 
  which 
  details 
  the 
  economy 
  of 
  Monodontomerus, 
  the 
  

   following 
  occurs: 
  " 
  Shortly 
  before 
  they 
  were 
  ready 
  to 
  enter 
  the 
  

   nymph 
  state 
  the 
  alimentary 
  organs 
  became 
  perforated, 
  and 
  faeces 
  

   were 
  passed 
  for 
  the 
  first 
  time 
  during 
  the 
  whole 
  period 
  of 
  the 
  

   insects' 
  previous 
  existence. 
  The 
  faeces 
  passed 
  were 
  little 
  solid 
  

   brown 
  masses 
  that 
  closely 
  resemble 
  the 
  faecal 
  masses 
  passed 
  by 
  the 
  

   pollinivorous 
  larva 
  of 
  Anthophoray 
  In 
  another 
  paper 
  read 
  on 
  the 
  

   5th 
  of 
  March, 
  1850, 
  the 
  following 
  occurs 
  — 
  in 
  speaking 
  of 
  the 
  

   contents 
  of 
  a 
  cell 
  of 
  Antho^ihorn, 
  in 
  which 
  the 
  insect 
  had 
  changed 
  

   to 
  the 
  nymph 
  state, 
  and 
  had 
  been 
  subsequently 
  attacked 
  by 
  para- 
  

   sitic 
  larvae 
  : 
  " 
  All 
  which 
  this 
  cell 
  contained 
  were 
  the 
  parasites 
  

   and 
  the 
  remains 
  of 
  the 
  nymph, 
  together 
  with 
  the 
  larva 
  skin 
  it 
  had 
  

   thrown 
  off 
  on 
  assuming 
  this 
  condition, 
  while 
  the 
  larger 
  end 
  of 
  the 
  

   cell 
  was 
  coated 
  with 
  a 
  perfectly 
  smooth 
  layer 
  of 
  ejecta 
  ; 
  a 
  coating 
  

   which, 
  as 
  I 
  formerly 
  stated, 
  it 
  always 
  gains 
  after 
  the 
  larva 
  has 
  

   ceased 
  to 
  feed 
  and 
  before 
  it 
  changes 
  to 
  a 
  nymph 
  :" 
  so 
  that 
  in 
  the 
  

   latter 
  instance 
  there 
  were 
  no 
  solid 
  masses 
  such 
  as 
  are 
  usually 
  

   passed 
  by 
  Anthophora, 
  I 
  am 
  therefore 
  greatly 
  surprised 
  to 
  find 
  

   exceptions 
  taken 
  to 
  statements 
  of 
  my 
  own 
  communicated 
  to 
  the 
  

   Linnsean 
  Society. 
  I 
  remarked 
  that 
  in 
  a 
  cell 
  containing 
  a 
  number 
  

   of 
  the 
  larvae 
  of 
  lilotiodoiitomerus, 
  that 
  besides 
  these 
  all 
  that 
  remained 
  

   after 
  they 
  had 
  consumed 
  the 
  nymph 
  was 
  a 
  portion 
  " 
  of 
  yellow 
  

   dust 
  or 
  small 
  granules 
  ;" 
  other 
  words 
  for 
  " 
  little 
  brown 
  masses," 
  

   which 
  were 
  observed 
  by 
  Mr. 
  Newport 
  in 
  the 
  first 
  instance 
  quoted. 
  

   The 
  facts 
  recorded 
  should 
  have 
  induced 
  the 
  author 
  to 
  pause 
  be- 
  

   fore 
  he 
  came 
  to 
  the 
  conclusion 
  that 
  my 
  statement 
  originated 
  in 
  

   oversight 
  or 
  mistake. 
  

  

  I 
  would, 
  before 
  I 
  conclude, 
  call 
  attention 
  to 
  a 
  remarkable 
  cir- 
  

   cumstance 
  connected 
  with 
  the 
  parasite 
  McUtlobia. 
  The 
  whole 
  and 
  

   sole 
  purpose 
  of 
  their 
  existence 
  appears 
  to 
  be 
  to 
  keep 
  in 
  check 
  the 
  

   numbers 
  of 
  other 
  insects 
  ; 
  and 
  we 
  may 
  reasonably 
  conclude 
  on 
  

   the 
  part 
  of 
  the 
  male 
  sex, 
  without 
  ever 
  emerging 
  into 
  the 
  light 
  of 
  

   day, 
  and 
  on 
  the 
  part 
  of 
  both 
  sexes 
  when 
  arrived 
  at 
  their 
  perfect 
  

   condition, 
  without 
  during 
  several 
  weeks 
  requiring 
  any 
  kind 
  of 
  

   nourishment 
  ; 
  two 
  of 
  my 
  broods 
  are 
  in 
  glass 
  tubes, 
  without, 
  as 
  far 
  

  

  