﻿204 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  »8 
  

  

  Paratypes. 
  — 
  107 
  females, 
  109 
  males, 
  same 
  data; 
  5 
  females, 
  8 
  males, 
  

   Lmiga 
  River 
  Valley, 
  Guadalcanal 
  Island, 
  September 
  9 
  to 
  October 
  17, 
  

   1944 
  (Laffoon) 
  ; 
  2 
  females, 
  1 
  male, 
  Malimbu 
  Eiver 
  Valley, 
  Guadal- 
  

   canal 
  Island, 
  November 
  12, 
  1944 
  (Laffoon) 
  ; 
  6 
  females, 
  3 
  males, 
  Teneru 
  

   District, 
  Guadalcanal 
  Island, 
  August 
  6, 
  October 
  30, 
  November 
  1, 
  and 
  

   December 
  10, 
  1944, 
  and 
  April 
  14, 
  1945 
  (Beck) 
  ; 
  4 
  females, 
  Guadal- 
  

   canal 
  Island 
  (Beck) 
  ; 
  1 
  female, 
  Guadalcanal 
  Island, 
  July 
  23, 
  1945 
  

   (Frank 
  Cilley). 
  

  

  Two 
  males, 
  one 
  from 
  "S. 
  W. 
  Pacific 
  85, 
  Area 
  1," 
  June 
  17, 
  1944 
  

   (Beck) 
  and 
  one 
  from 
  "Solomon 
  Islands," 
  July 
  to 
  August, 
  1909 
  ( 
  W. 
  W. 
  

   Froggatt) 
  , 
  are 
  this 
  species, 
  but 
  are 
  not 
  included 
  in 
  the 
  type 
  series. 
  

  

  Remarks. 
  — 
  This 
  species, 
  a 
  Ptilocera 
  in 
  the 
  strict 
  sense, 
  may 
  readily 
  be 
  

   distinguished 
  from 
  all 
  previously 
  described 
  species 
  of 
  the 
  genus 
  by 
  

   the 
  absence 
  of 
  whitish 
  tomentum 
  on 
  the 
  fourth 
  and 
  fifth 
  abdominal 
  

   segments. 
  

  

  The 
  Guadalcanal 
  material 
  seems 
  quite 
  uniform, 
  except 
  for 
  size 
  and 
  

   minor 
  color 
  variations. 
  However, 
  specimens 
  of 
  hergi 
  from 
  the 
  other 
  

   islands 
  of 
  the 
  Solomons 
  group 
  are 
  more 
  variable. 
  Two 
  females 
  from 
  

   Florida 
  Island, 
  March 
  1945 
  (Bohart) 
  are 
  like 
  the 
  Guadalcanal 
  

   females 
  except 
  that 
  the 
  middle 
  basitarsus 
  is 
  wholly 
  yellow. 
  A 
  female 
  

   from 
  Santa 
  Cruz 
  Island 
  (W. 
  M. 
  Mann) 
  has 
  the 
  terminal 
  antennal 
  

   segment 
  wholly 
  whitish 
  and 
  white-haired; 
  the 
  legs 
  are 
  yellowish 
  to 
  

   brownish, 
  but 
  this 
  may 
  be 
  due 
  to 
  the 
  aging 
  condition 
  of 
  the 
  specimen. 
  

   It 
  is 
  quite 
  probable 
  that 
  when 
  the 
  fauna 
  of 
  the 
  islands 
  is 
  better 
  known 
  

   several 
  distinct 
  subspecies 
  may 
  be 
  recognized. 
  Specimens 
  from 
  

   Bougainville 
  Island 
  are 
  sufficiently 
  distinct 
  and 
  numerous 
  enough 
  

   in 
  the 
  collection 
  to 
  warrant 
  description 
  as 
  a 
  subspecies; 
  I 
  am 
  calling 
  

   this: 
  

  

  PTILOCERA 
  BERGI 
  FLAVESCENS, 
  new 
  subspecies 
  

  

  Differs 
  from 
  the 
  typical 
  form 
  as 
  follows. 
  The 
  wing 
  is 
  partially 
  

   transversed 
  by 
  a 
  band 
  of 
  yellow 
  microtrichia 
  extending 
  from 
  the 
  

   stigmatal 
  area 
  through 
  the 
  apical 
  half 
  of 
  the 
  discal 
  to 
  the 
  basal 
  

   portion 
  of 
  the 
  third 
  and 
  fourth 
  posterior 
  cells 
  ; 
  this 
  band 
  is 
  prominent 
  

   in 
  the 
  male 
  but 
  only 
  weakly 
  developed 
  in 
  the 
  female. 
  The 
  middle 
  

   basitarsus 
  is 
  distinctly 
  yellow. 
  The 
  scutellar 
  spines 
  are 
  yellowish 
  

   apically 
  in 
  both 
  sexes. 
  In 
  the 
  female, 
  the 
  broad 
  lateral 
  areas 
  of 
  

   iridescent 
  scales 
  on 
  the 
  mesonotum 
  are 
  interrupted 
  by 
  a 
  longitudinal 
  

   band 
  of 
  hairs 
  to 
  each 
  side 
  of 
  the 
  median 
  band 
  ; 
  all 
  these 
  hairs 
  have 
  

   a 
  reddish 
  cast. 
  Length, 
  9 
  to 
  10 
  mm. 
  

  

  Holotype. 
  — 
  Female, 
  Bougainville 
  Island, 
  April 
  10, 
  1944 
  (Downs) 
  , 
  

   U.S.N.M. 
  No. 
  57310. 
  

  

  Allotype. 
  — 
  ^Male, 
  same 
  data. 
  

  

  Paratypes. 
  — 
  3 
  males, 
  same 
  data 
  ; 
  1 
  male, 
  Bougainville 
  Island, 
  1944 
  

   (Downs) 
  ; 
  1 
  male, 
  Bougainville 
  Island, 
  July 
  1 
  to 
  September 
  15, 
  1944 
  

  

  