﻿202 
  

  

  BOTANICAL 
  GAZETTK. 
  

  

  August 
  

  

  ventris 
  Cr. 
  9 
  , 
  s. 
  and 
  c. 
  p. 
  ; 
  (14) 
  O, 
  latitarsis 
  Cr. 
  ^ 
  , 
  s. 
  ; 
  (15) 
  

   Nomada 
  luteola 
  St. 
  Farg. 
  ^9, 
  s. 
  ; 
  (16) 
  N. 
  bisignata 
  Say 
  

   ? 
  9 
  , 
  s. 
  Andrciiidae: 
  (17-18) 
  Andrena 
  spp. 
  9, 
  s. 
  and 
  c. 
  p.; 
  

   ( 
  19) 
  A. 
  hirticeps 
  Sm. 
  9 
  , 
  s. 
  ; 
  (20) 
  A. 
  valida 
  Say 
  9 
  , 
  s. 
  and 
  c. 
  

   p.; 
  (21) 
  Aiigochlora 
  labrosa 
  Say 
  9 
  , 
  s. 
  ; 
  (22) 
  Halictus 
  cor- 
  

   iaceus 
  Sm. 
  9 
  , 
  s. 
  ; 
  (23) 
  H. 
  lerouxii 
  St. 
  Farg. 
  9 
  , 
  s. 
  

  

  p. 
  ; 
  (24) 
  H. 
  flavipes 
  F. 
  9 
  , 
  s. 
  and 
  c. 
  p., 
  ab. 
  ; 
  (25) 
  H. 
  zephyrus 
  

  

  Sm. 
  9 
  . 
  S 
  • 
  ('7f\\ 
  H 
  nilnciic 
  <Nt-n 
  O 
  c 
  -^rxA 
  n 
  r^ 
  • 
  ( 
  ^>l\ 
  H. 
  

  

  (26) 
  H. 
  pilosus 
  Sm. 
  9 
  , 
  s. 
  and 
  c. 
  p. 
  ; 
  (27} 
  H. 
  

   . 
  9 
  , 
  s. 
  and 
  c. 
  p. 
  ; 
  (28) 
  H. 
  stultus 
  Cr. 
  9 
  , 
  s. 
  and 
  

  

  Sm. 
  9 
  , 
  s. 
  ; 
  

  

  confusus 
  Sm. 
  9 
  , 
  s. 
  and 
  c. 
  p. 
  ; 
  (28) 
  H. 
  stultus 
  Cr. 
  9 
  , 
  s. 
  and 
  

   c. 
  p., 
  ab, 
  ; 
  (29) 
  Colletes 
  inaequalis 
  Say 
  ^ 
  9 
  , 
  s. 
  and 
  c. 
  p., 
  ab.; 
  

   (30) 
  C. 
  canadensis 
  Cr. 
  ? 
  9 
  , 
  s. 
  and 
  c. 
  p. 
  Vesfidm: 
  (31) 
  Pol- 
  

   istes 
  palJipes 
  St. 
  Farg. 
  s. 
  

  

  V>\^\QXd.—Bomhylidoe: 
  (32) 
  Bombylius 
  fratellus 
  Wied., 
  s. 
  

   Emfidit: 
  {^^) 
  Empis 
  sp., 
  s. 
  

  

  Lepidoptera 
  — 
  Rhofalocera 
  : 
  (34) 
  Lycasna 
  comyntas 
  

   ^^^^' 
  ; 
  (35) 
  Nisoniades 
  icelus 
  Lintn., 
  both 
  s. 
  

  

  Coleoptera— 
  C^r^w^jr/V/ce 
  ; 
  (36) 
  Molorchus 
  bimaculatus 
  

   Say. 
  

  

  Cassia 
  Chamaccrlsta 
  L.-*— 
  The 
  sickle-shaped 
  pistil 
  is 
  

   turned 
  eitlier 
  to 
  the 
  right 
  or 
  to 
  the 
  left, 
  holding 
  the 
  stigma 
  in 
  

   such 
  a 
  position 
  that 
  it 
  touches 
  the 
  bee 
  upon 
  the 
  side 
  ; 
  the 
  

   flower 
  is 
  therefore 
  an 
  example 
  of 
  what 
  Delpino 
  calls 
  a 
  

   pleuroiribc 
  ^ower. 
  Ten 
  long 
  black 
  anthers 
  with 
  terminal 
  

   pores 
  turn 
  in 
  an 
  opposite 
  direction 
  from 
  the 
  pistil. 
  The 
  

   petals 
  are 
  bright 
  yellow, 
  the 
  upper 
  ones 
  are 
  provided 
  with 
  a 
  

   little 
  red 
  at 
  base 
  which 
  serves 
  as 
  a 
  path-tlnder, 
  but 
  not 
  as 
  a 
  

   nectar-guide, 
  since 
  nectar 
  is 
  w^anting. 
  All 
  are 
  widely 
  ex- 
  

   panded 
  and 
  flexible 
  except 
  the 
  lateral 
  one 
  toward 
  which 
  the 
  

   anthers 
  turn, 
  which 
  is 
  erect 
  and 
  strongly 
  incurved 
  

  

  Vr^V* 
  commonly 
  breaks 
  on 
  being 
  bent 
  back. 
  

  

  1 
  lie 
  flowers 
  are 
  visited 
  exclusively 
  by 
  bumble-bee 
  

   and 
  workers 
  in 
  search 
  of 
  pollen. 
  Landing 
  upon 
  the 
  an 
  

   they 
  seize 
  them 
  between 
  their 
  mandibles 
  and 
  stroke 
  theiD 
  

   downwards 
  vn 
  ith 
  a 
  sort 
  of 
  milking 
  motion. 
  The 
  pollen 
  being 
  

   thus 
  forced 
  out 
  of 
  th^ 
  f*.,-rr.,-^oi 
  -,„.u^,. 
  .,^,.^c 
  fnlls 
  either 
  

  

  is 
  

  

  a 
  

  

  nd 
  so 
  

  

  females 
  

   thers 
  

  

  hich 
  

  

  directly 
  upon 
  the 
  bee 
  or 
  upon 
  the 
  lateral 
  p..e.. 
  -- 
  , 
  

   pressed 
  close 
  against 
  the 
  bee's 
  side. 
  In 
  this 
  way 
  the 
  side 
  « 
  

  

  anther-pores 
  

  

  petal 
  

  

  the 
  bee 
  which 
  

  

  next 
  to 
  the 
  incurved 
  petal 
  receives 
  

  

  imonfl 
  • 
  ^?^'^ 
  ^*'g^^^ 
  ^"d 
  left-hand 
  flowers 
  are 
  found 
  

   XI 
  f^^ 
  P'^"^- 
  A 
  bee 
  visiting 
  a 
  left-hand 
  flower 
  e- 
  

   hZfr^"" 
  ^P°,'^ 
  "-^^ 
  "gJ^t 
  side 
  and 
  then 
  flving 
  to 
  a 
  nght- 
  

   i^and 
  flower, 
  strikes 
  the 
  same 
  side 
  against 
  the 
  stigma. 
  

  

  Nat^XVI^'ofi-S-^flg 
  2°"" 
  "'*' 
  *'*''''"' 
  ^^ 
  Solaiium 
  rostratum 
  aud 
  Cassia 
  ChftmscrisW- 
  ^» 
  

  

  