﻿Records 
  of 
  Dees. 
  489 
  

  

  Megachile 
  abluta 
  , 
  sp. 
  n. 
  

  

  $ 
  .—Length 
  9^-10^ 
  mm. 
  

  

  Size, 
  colour, 
  and 
  appearanee 
  exactly 
  as 
  in 
  M. 
  rixator, 
  but 
  

   readily 
  separable 
  by 
  the 
  following 
  characters 
  : 
  hair 
  of 
  last 
  

   ventral 
  segment 
  black 
  ; 
  hair 
  of 
  vertex 
  fuscous 
  ; 
  clypeus 
  

   densely 
  punctured, 
  without 
  any 
  median 
  smooth 
  line 
  ; 
  fiagel- 
  

   lum 
  not 
  red 
  beneath 
  ; 
  hair 
  on 
  inner 
  side 
  of 
  tarsi 
  very 
  pale 
  ; 
  

   ventral 
  scopa 
  usually 
  paler, 
  the 
  basal 
  half 
  white 
  ; 
  otherwise 
  

   the 
  two 
  are 
  essentially 
  the 
  same. 
  

  

  cJ 
  . 
  — 
  Length 
  7-9 
  mm. 
  

  

  Face 
  densely 
  covered 
  with 
  pale 
  ochreous 
  hair 
  ; 
  flagellurn 
  

   black 
  ; 
  anterior 
  coxse 
  with 
  short 
  black 
  spines 
  ; 
  anterior 
  tibiae 
  

   and 
  tarsi 
  simple, 
  the 
  tarsi 
  red 
  at 
  apex 
  ; 
  sixth 
  abdominal 
  

   segment 
  bilobed, 
  the 
  lobes 
  rounded, 
  the 
  dorsal 
  surface 
  with 
  

   a 
  large 
  kidney-shaped 
  dense 
  patch 
  of 
  pale 
  hair; 
  no 
  subapical 
  

   ventral 
  teeth. 
  

  

  This 
  male 
  looks 
  just 
  like 
  the 
  Australian 
  M. 
  sequior, 
  Ckll., 
  

   except 
  that 
  it 
  lacks 
  the 
  thoracic 
  hair-spots 
  conspicuous 
  in 
  

   sequior. 
  It 
  is 
  even 
  more 
  like 
  the 
  European 
  M. 
  apicalis, 
  

   which 
  is 
  without 
  the 
  hair-spots, 
  but 
  M. 
  abluta 
  has 
  a 
  fairly 
  

   evident 
  pallid 
  band 
  in 
  the 
  scutello-mesothoracic 
  suture, 
  

   wanting 
  in 
  apicalis. 
  In 
  apicalis 
  the 
  margin 
  of 
  the 
  sixth 
  

   abdominal 
  segment 
  is 
  denticulate, 
  which 
  is 
  not 
  at 
  all 
  the 
  case 
  

   in 
  abluta. 
  The 
  kidney-shaped 
  patch 
  of 
  hair 
  is 
  more 
  extensive 
  

   in 
  apicalis, 
  almost 
  entirely 
  covering 
  the 
  dorsal 
  surface 
  of 
  the 
  

   sixth 
  segment. 
  

  

  Hob. 
  Formosa 
  (Sauter). 
  31 
  females 
  and 
  34 
  males 
  in 
  

   Berlin 
  Museum. 
  The 
  type 
  is 
  a 
  female 
  from 
  Takao, 
  Aug. 
  23, 
  

   1907. 
  All 
  the 
  females 
  come 
  from 
  Takao, 
  July 
  to 
  October. 
  

   The 
  males 
  bear 
  the 
  following 
  data 
  : 
  Takao, 
  May 
  3, 
  and 
  July 
  

   to 
  October 
  ; 
  Taihanroku, 
  June 
  and 
  July 
  ; 
  Koroton, 
  Sept. 
  8 
  ; 
  

   Kagi, 
  Aug. 
  29. 
  

  

  Megachile 
  subusta, 
  sp. 
  n. 
  

  

  $ 
  . 
  — 
  Length 
  11-12 
  mm. 
  

  

  In 
  nearly 
  all 
  respects 
  exactly 
  like 
  the 
  male 
  of 
  M. 
  rufo- 
  

   vittata, 
  but 
  with 
  the 
  hair 
  of 
  the 
  vertex 
  and 
  thoracic 
  dorsum 
  

   entirely 
  ferruginous, 
  without 
  any 
  fuscous 
  or 
  black. 
  On 
  the 
  

   disc 
  of 
  the 
  mesothorax 
  the 
  punctures 
  are 
  close, 
  yet 
  the 
  

   shining 
  surface 
  is 
  clearly 
  visible 
  between 
  them, 
  whereas 
  in 
  

   rufovittata 
  this 
  is 
  not 
  the 
  case. 
  The 
  abdomen 
  is 
  much 
  less 
  

   closely 
  punctured 
  than 
  in 
  rufovittata 
  ; 
  thus 
  the 
  disc 
  of 
  the 
  

   fourth 
  segment 
  is 
  closely 
  punctured 
  in 
  rufovittata, 
  sparsely 
  

  

  