﻿402 
  Mr. 
  G. 
  Meade- 
  Waldo 
  on 
  

  

  seems 
  only 
  found 
  in 
  the 
  lialt'-closed 
  yellow 
  flowers 
  of 
  a 
  species 
  

   of 
  Malvaceae, 
  which 
  grows 
  about 
  here, 
  a 
  weed 
  with 
  larore 
  

   pale 
  3'ellow 
  flowers. 
  I 
  seize 
  the 
  flower 
  at 
  the 
  front, 
  closing 
  it 
  

   up, 
  and 
  listening 
  for 
  a 
  buzz 
  ; 
  if 
  I 
  hear 
  it 
  1 
  gather 
  the 
  flower, 
  

   and 
  put 
  it 
  quietly 
  into 
  a 
  glass-bottomed 
  collecting-box. 
  

   The 
  bee 
  generally 
  cuts 
  its 
  way 
  through 
  the 
  base 
  of 
  the 
  flower. 
  

   I 
  was 
  led 
  to 
  look 
  by 
  finding 
  so 
  many 
  blooms 
  wifli 
  a 
  dis- 
  

   coloured 
  hole 
  near 
  the 
  base 
  " 
  (//. 
  Sivale, 
  in 
  litt., 
  1914). 
  

  

  Tetralon'ia 
  simpsoni, 
  sp. 
  n. 
  

  

  cJ 
  . 
  Nigra 
  ; 
  capita, 
  thorace, 
  tergitibus 
  2-7 
  fulvo-hirtis 
  ; 
  tergite 
  1 
  

   pedibusque 
  dense 
  nigro-hirtis 
  ; 
  sterno 
  sternitibus 
  pallida 
  pubes- 
  

   centibus 
  ; 
  antannis 
  longissimis 
  (lOg 
  mm.), 
  rulis 
  ; 
  mandibulis 
  

   basi, 
  clypaoque 
  luteis 
  ; 
  alls 
  hyalinis. 
  

   Long. 
  10| 
  mm. 
  

  

  cJ 
  . 
  Black; 
  head 
  (except 
  behind 
  the 
  eyes), 
  thorax 
  above, 
  

   and 
  tergites 
  2-7 
  with 
  a 
  dense 
  golden-brown 
  pubescence 
  ; 
  

   behind 
  the 
  eyes, 
  vertex, 
  i'ace, 
  labrurn, 
  and 
  sternum 
  clothed 
  

   with 
  pale 
  hair 
  ; 
  tergite 
  1 
  and 
  legs 
  with 
  dense 
  black 
  pubes- 
  

   cence. 
  Anteiniai 
  very 
  long, 
  equal 
  in 
  length 
  to 
  whole 
  insect, 
  

   joints 
  3 
  and 
  4 
  of 
  flagellum 
  subequal, 
  all 
  the 
  flagellar 
  joints 
  

   sinuate. 
  Head 
  broad 
  as 
  thorax, 
  finely 
  punctured 
  ; 
  ocelli 
  in 
  

   a 
  very 
  broad 
  triangle 
  ; 
  labrum 
  rather 
  coarsely 
  punctured. 
  

   Femur 
  iii. 
  without 
  any 
  tubercle 
  and 
  tergite 
  6 
  witliout 
  lateral 
  

   teeth. 
  Wings 
  hyaline, 
  nervures 
  black. 
  Tegulte 
  ferruginous. 
  

  

  Length 
  10^ 
  mm. 
  

  

  N. 
  Nigeria 
  [Dr. 
  J. 
  J. 
  Simpson). 
  1 
  S 
  - 
  

  

  A 
  conspicuous 
  species, 
  the 
  dense 
  black 
  basal 
  abdominal 
  

   segment 
  giving 
  it 
  a 
  distinctive 
  appearance. 
  

  

  Tetralonia 
  fiJviventris, 
  Sm. 
  

  

  Tetralonia 
  fulviventris, 
  Sm. 
  Catal. 
  Hymen. 
  Erit. 
  Mus. 
  ii. 
  p. 
  308 
  

  

  (1854). 
  $, 
  _ 
  

   Tetralonia 
  exquisitn, 
  Cress. 
  Proc. 
  Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  p. 
  213 
  

  

  (1878). 
  $. 
  

  

  A 
  $ 
  specimen 
  of 
  (yresson^s 
  species 
  from 
  Oaxaca, 
  deter- 
  

   mined 
  by 
  Cockerell, 
  agrees 
  perfectly 
  with 
  Smith's 
  type 
  of 
  

   T. 
  fulviventris^ 
  described 
  from 
  a 
  Mexican 
  specimen. 
  

  

  Subfamily 
  Psosopidinjs. 
  

  

  Of 
  remarkable 
  interest 
  is 
  the 
  new 
  genus 
  Eupalceorhiza 
  

   here 
  described. 
  Both 
  Perkins 
  and 
  Cockerell 
  have 
  published 
  

   notes 
  on 
  the 
  interesting 
  fact 
  that 
  there 
  is 
  sexual 
  dimoiphism 
  

  

  