﻿286 
  Mr. 
  R. 
  C. 
  L. 
  Perkins 
  on 
  

  

  53. 
  (56) 
  Lower 
  occipital 
  angles 
  of 
  the 
  head 
  very 
  strongly 
  acutely 
  

  

  produced 
  backwards, 
  the 
  abdomen 
  clothed 
  with 
  long 
  

   pale 
  hairs 
  on 
  the 
  basal 
  segment 
  and 
  on 
  the 
  middle 
  of 
  

   the 
  second, 
  forming 
  more 
  or 
  less 
  of 
  a 
  tuft 
  there, 
  the 
  

   rest 
  inconspicuously 
  hairy 
  from 
  the 
  shortness 
  of 
  the 
  

   hairs, 
  and 
  never 
  with 
  pale 
  bands 
  or 
  fasciae. 
  

  

  54. 
  (55) 
  Third 
  antennal 
  joint 
  very 
  much 
  longer 
  than 
  the 
  4th, 
  

  

  which 
  is 
  short, 
  nearly 
  square 
  in 
  outline, 
  as 
  seen 
  from 
  

   in 
  front 
  varians. 
  

  

  55. 
  (54) 
  Third 
  antennal 
  joint 
  somewhat 
  longer 
  than 
  the 
  4 
  th, 
  

  

  which 
  in 
  the 
  same 
  aspect 
  as 
  above 
  appears 
  very 
  dis- 
  

   tinctly 
  elongate 
  synadelplut. 
  

  

  56. 
  (53) 
  Lower 
  occipital 
  angles 
  very 
  seldom 
  strongly 
  and 
  sub- 
  

  

  acutely 
  produced, 
  and 
  if 
  so 
  formed, 
  then 
  the 
  abdomen 
  

   is 
  quite 
  different 
  in 
  clothing 
  from 
  that 
  of 
  the 
  above 
  

   section. 
  

  

  57. 
  (66) 
  Tubercle 
  of 
  the 
  labrum 
  upturned, 
  so 
  that 
  in 
  an 
  apical 
  

  

  view 
  of 
  the 
  head 
  it 
  interrupts 
  the 
  apical 
  margin 
  of 
  the 
  

   clypeus. 
  

  

  58. 
  (63) 
  Head 
  seen 
  from 
  above 
  with 
  the 
  hind 
  angles 
  simply 
  rounded 
  

  

  ofiP, 
  normal. 
  

  

  59. 
  (60) 
  Clypeus 
  well 
  clothed, 
  but 
  if 
  viewed 
  somewhat 
  from 
  the 
  

  

  side 
  the 
  surface 
  and 
  sculpture 
  beneath 
  the 
  hairs 
  is 
  

   easily 
  seen; 
  apical 
  hair-bands 
  of 
  abdominal 
  segments 
  

   3 
  and 
  4 
  almost 
  i^erfectly 
  decumbent 
  concealing 
  the 
  

   surface 
  beneath 
  (3rd 
  antennal 
  joint 
  hardly 
  longer 
  than 
  

   the 
  fourth) 
  fuscipes. 
  

  

  60. 
  (59) 
  Clypeus 
  * 
  very 
  densely 
  clothed, 
  so 
  that, 
  viewed 
  somewhat 
  

  

  from 
  the 
  side, 
  the 
  surface 
  is 
  not, 
  or 
  hardly 
  at 
  all, 
  visible; 
  

  

  ' 
  apical 
  hair-bands 
  of 
  3rd 
  and 
  4th 
  segments 
  less 
  appressed 
  

   and 
  the 
  surface 
  beneath, 
  which 
  is 
  smooth 
  and 
  often 
  

   shining, 
  is 
  easily 
  seen. 
  

  

  (In 
  normal 
  examples 
  the 
  3rd 
  antennal 
  joint 
  is 
  con- 
  

   spicuously 
  longer 
  than 
  the 
  4th, 
  the 
  latter 
  often 
  nearly 
  

   square 
  in 
  outline 
  or 
  very 
  little 
  elongate.) 
  

  

  61. 
  (62) 
  f 
  Abdomen 
  very 
  pubescent, 
  so 
  that 
  to 
  the 
  naked 
  eye 
  its 
  

  

  * 
  I 
  know 
  no 
  other 
  character 
  that 
  can 
  be 
  of 
  much 
  use 
  in 
  a 
  table, 
  

   and 
  it 
  is 
  necessary 
  to 
  have 
  well-preserved 
  specimens. 
  The 
  antermal 
  

   joints, 
  the 
  reflexed 
  margin 
  of 
  the 
  6th 
  ventral 
  segment 
  and 
  apex 
  

   of 
  the 
  8th 
  all 
  vary 
  in 
  this 
  group. 
  Novmally 
  fuscipes 
  has 
  the 
  abdomen 
  

   less 
  distinctly 
  jimictured 
  than 
  the 
  two 
  following 
  species. 
  

  

  t 
  These 
  two 
  species 
  are 
  generally 
  easy 
  to 
  distinguish, 
  but 
  very 
  

   difficult 
  to 
  tabulate, 
  as 
  most 
  of 
  the 
  characters 
  vary. 
  Li 
  normal 
  

   examples 
  simillima 
  is 
  the 
  smaller 
  species, 
  with 
  more 
  elongate 
  and 
  

   slender 
  3rd 
  antemial 
  joint, 
  and 
  with 
  the 
  dense 
  white 
  fasciae 
  formed 
  

  

  