﻿^890.] 
  BOTANICAL 
  GAZETTE. 
  8 
  1 
  

  

  (4) 
  Alcidaniea 
  frodiicta 
  Cr, 
  9 
  , 
  s. 
  ; 
  (5) 
  Andronicus 
  eyliiidricus 
  

   Cr. 
  9 
  , 
  c. 
  p. 
  ; 
  (6) 
  Heriades 
  carinatnm 
  Cr. 
  ? 
  , 
  c. 
  p. 
  ; 
  (7) 
  Ccel- 
  

   ioxys 
  8-deniata 
  Say 
  ? 
  , 
  s. 
  ; 
  (8) 
  CalUopis 
  audreniforniis 
  Sm. 
  

   ? 
  , 
  s. 
  AudrenidiB: 
  (9) 
  Halictus 
  sp. 
  ^ 
  , 
  s. 
  ; 
  (10) 
  11. 
  -pilostis 
  

   Sm. 
  9 
  , 
  s. 
  ; 
  (11) 
  //. 
  connexus 
  Cr. 
  9 
  , 
  s. 
  and 
  c. 
  p. 
  ; 
  (12) 
  Pro- 
  

   sofis 
  affuns 
  Sm. 
  9 
  , 
  f. 
  p. 
  ; 
  (13) 
  P. 
  fygmc^a 
  Cr. 
  9 
  , 
  f. 
  p. 
  Eu- 
  

   mcnidm 
  : 
  {i^) 
  Euiiienes 
  fraternus 
  S2iy, 
  ^. 
  Sfhecidie: 
  (15) 
  

   A/mnop/u'la 
  inter 
  cefta 
  St. 
  Farg. 
  ; 
  {\6) 
  A. 
  vulgaris 
  Cr. 
  ; 
  (17) 
  

   Priononyx 
  airata 
  St. 
  Farg,, 
  all 
  3 
  s. 
  

  

  Diptera 
  — 
  Syrphidce: 
  (18) 
  Paragus 
  bicolor 
  F. 
  ; 
  (19) 
  Zro- 
  

  

  f 
  

  

  _^ 
  ^^v^«^^« 
  ..^.,., 
  ,^W^*X 
  *, 
  ^. 
  

  

  Coleoptera 
  — 
  Chrysonielid<x^: 
  (20) 
  Diabroiica 
  i2-ftinctaia 
  

  

  Oliv. 
  ; 
  (21) 
  D. 
  ati'ipennis 
  ^'A\. 
  MeloidcB: 
  (22) 
  Mac7'obasis 
  

   zuncolor 
  Kby., 
  all 
  f. 
  p. 
  

  

  Petalostemon 
  vioiacens 
  Mx, 
  — 
  The 
  plants 
  grow 
  in 
  rather 
  

   large 
  patches, 
  the 
  stems 
  being 
  terminated 
  by 
  several 
  close 
  

   spikes 
  of 
  rose-purple 
  flowers, 
  which 
  I 
  regard 
  as 
  proteran- 
  

   drous. 
  The 
  corolla 
  is 
  nearly 
  regular, 
  and 
  it 
  seems 
  as 
  if 
  it 
  

   might 
  as 
  well 
  be 
  quite 
  so, 
  as 
  far 
  as 
  its 
  effect 
  upon 
  insects 
  is 
  

   concerned. 
  Indeed, 
  the 
  calyx 
  has 
  more 
  to 
  do 
  with 
  deter- 
  

   mmmg 
  the 
  character 
  of 
  the 
  visitors. 
  The 
  number 
  of 
  wasps 
  

   is 
  far 
  greater 
  than 
  would 
  be 
  expected 
  on 
  a 
  flower 
  of 
  the 
  com- 
  

   plicated 
  structure 
  we 
  find 
  in 
  most 
  Papilionacea^. 
  The 
  organs 
  

   are 
  so 
  exposed 
  that 
  the 
  stigma 
  is 
  pollinated 
  and 
  the 
  pollen 
  is 
  

   collected 
  b}^ 
  bees 
  crawling 
  around 
  the 
  spikes. 
  The 
  nectar 
  

   IS 
  not 
  ver}^ 
  deeply 
  seated, 
  the 
  calyx 
  being 
  3 
  to 
  4 
  mm. 
  deep 
  ; 
  

   hut 
  tlie 
  flowers 
  are 
  visited 
  more 
  frequently 
  for 
  pollen 
  than 
  

   for 
  nectar. 
  

  

  Visitors 
  (7 
  days, 
  July 
  5-30): 
  Hymenoptera 
  — 
  Afidue: 
  (i) 
  

   Afis 
  iucllljica 
  L. 
  ^ 
  , 
  s. 
  and 
  c. 
  p. 
  ; 
  (2) 
  Bombus 
  virginicus 
  Oliv. 
  

  

  5 
  , 
  s. 
  and 
  c. 
  p. 
  ; 
  (3) 
  B, 
  sefaraius 
  Cr. 
  $ 
  $ 
  ?? 
  , 
  s. 
  and 
  c. 
  p^ 
  ; 
  

   (4) 
  B, 
  auiericanorwn 
  F, 
  $ 
  $ 
  , 
  s. 
  and 
  c. 
  p., 
  ab. 
  ; 
  (5) 
  B, 
  sciUcUaris 
  

   Cr. 
  5^ 
  , 
  s. 
  and 
  c. 
  p. 
  ; 
  (6) 
  Melissodcs 
  obliqim 
  Say 
  <? 
  9 
  , 
  s. 
  and 
  

   ^' 
  P- 
  ' 
  (7) 
  M. 
  bimactdata 
  St. 
  Farg. 
  $ 
  , 
  s. 
  ; 
  (8^ 
  Ceratina 
  dufla 
  

   Say 
  9 
  , 
  s. 
  and 
  c. 
  p.*''; 
  (9) 
  Megachile 
  brcvis 
  Say 
  9 
  , 
  s. 
  and 
  c. 
  

   P--* 
  ab. 
  ; 
  (10) 
  M. 
  iuimica 
  Cr. 
  9 
  , 
  s. 
  and 
  c. 
  p. 
  ; 
  (n) 
  Andronicus 
  

   cyhndricns 
  Cr. 
  9 
  , 
  s. 
  and 
  c. 
  p. 
  ; 
  (12) 
  dvlioxys 
  S-deutaia 
  Say, 
  

   s< 
  ; 
  (13) 
  Epeolus 
  rcinigatus 
  F. 
  9 
  , 
  s. 
  ; 
  {\\) 
  E, 
  hiuahis 
  Say 
  $ 
  

  

  9 
  ? 
  s., 
  ab, 
  Aiidrenid<je 
  : 
  (15) 
  Aga-postcmou 
  nigricornis 
  F. 
  9 
  , 
  

   s. 
  and 
  c, 
  p., 
  ab. 
  ; 
  (16) 
  Atigochlora 
  fura 
  Say 
  9 
  ? 
  c. 
  p. 
  ; 
  (17) 
  

   A, 
  Inc/dula 
  Sm. 
  9 
  , 
  s. 
  ; 
  (18) 
  Halictus 
  sp. 
  9^ 
  c. 
  p. 
  ; 
  (19) 
  //. 
  

  

  '• 
  This 
  bee 
  is 
  said 
  to 
  be 
  destitute 
  of 
  pollenigeroiis 
  organs, 
  but 
  it 
  certainly 
  has 
  a 
  thin 
  sco- 
  

   pa 
  and 
  I 
  have 
  often 
  seen 
  it 
  collecting 
  pollen. 
  In 
  Am. 
  Nat. 
  XHI, 
  430, 
  Prof. 
  Trelease 
  men- 
  

   tions 
  having 
  seen 
  it 
  collecting 
  pollen 
  of 
  Lobelia 
  syphilitica. 
  

  

  