﻿232 
  Mr. 
  T. 
  D. 
  A. 
  Cockerell— 
  Descriptions 
  and 
  

  

  Switzerland 
  or 
  the 
  Tyrol, 
  among 
  cherry-trees, 
  vines, 
  and 
  fig- 
  

   trees. 
  The 
  occurrence 
  is 
  very 
  remarkable, 
  since 
  the 
  other 
  

   species 
  of 
  Exoneura 
  are 
  Australian. 
  

  

  Compared 
  with 
  the 
  Australian 
  E. 
  bicolor, 
  the 
  Syrian 
  insect 
  

   differs 
  not 
  only 
  in 
  colour, 
  but 
  very 
  conspicuously 
  in 
  the 
  

   elongated 
  face, 
  with 
  projecting 
  clypeus 
  and 
  large 
  malar 
  space 
  ; 
  

   also 
  in 
  the 
  shape 
  of 
  the 
  abdomen 
  and 
  the 
  venation. 
  Com- 
  

   pared 
  with 
  E. 
  bicolor, 
  E. 
  libanensis 
  has 
  the 
  stigma 
  smaller, 
  

   the 
  marginal 
  cell 
  narrower, 
  the 
  second 
  s.m. 
  smaller, 
  and 
  the 
  

   lower 
  section 
  of 
  b. 
  n. 
  much 
  more 
  oblique. 
  

  

  In 
  general, 
  E. 
  libanensis 
  is 
  very 
  like 
  the 
  Australian 
  Allo- 
  

   dape 
  simillima, 
  Smith, 
  or 
  the 
  African 
  A. 
  nigricollis, 
  Vachal 
  ; 
  

   but 
  both 
  of 
  these 
  have 
  the 
  lower 
  section 
  of 
  b. 
  n. 
  much 
  more 
  

   nearly 
  vertical. 
  E. 
  libanensis 
  has 
  a 
  shallow 
  basin-like 
  

   depression 
  at 
  the 
  base 
  of 
  the 
  metathorax, 
  and 
  the 
  same 
  is 
  

   well 
  indicated 
  in 
  Allodape 
  simillima. 
  There 
  is 
  no 
  doubt 
  that 
  

   E. 
  libanensis 
  is 
  an 
  offshoot 
  from 
  Allodape, 
  but 
  it 
  probably 
  

   arose 
  by 
  a 
  parallel 
  variation, 
  quite 
  independently 
  of 
  the 
  

   Australian 
  forms. 
  The 
  South-African 
  Allodape 
  rvfogastra, 
  

   Lep. 
  (the 
  type 
  of 
  the 
  genus), 
  has 
  the 
  lower 
  section 
  of 
  b. 
  u. 
  

   oblique 
  as 
  in 
  Exoneura 
  libanensis. 
  This 
  is 
  not 
  the 
  case, 
  

   however, 
  in 
  A. 
  variegata, 
  Smith, 
  another 
  species 
  with 
  red 
  

   abdomen. 
  

  

  In 
  view 
  of 
  the 
  differences 
  noted, 
  Exoneura 
  libanensis 
  may 
  

   be 
  taken 
  as 
  the 
  type 
  of 
  a 
  subgenus 
  (? 
  genus) 
  Exoneuridia. 
  

  

  Lithurgus 
  collaris, 
  Smith. 
  

  

  This 
  Japanese 
  species 
  was 
  described 
  from 
  the 
  male. 
  A 
  

   female 
  from 
  Formosa, 
  14^ 
  mm. 
  long, 
  agrees 
  with 
  Smith's 
  

   description, 
  except 
  for 
  the 
  usual 
  sexual 
  characters, 
  including 
  

   the 
  roughened 
  mesothorax. 
  The 
  clypeus 
  is 
  longitudinally 
  

   keeled, 
  and 
  the 
  hair 
  along 
  its 
  lower 
  margin, 
  as 
  well 
  as 
  that 
  

   on 
  lower 
  part 
  of 
  cheeks 
  and 
  front 
  of 
  anterior 
  coxa?, 
  is 
  ferru- 
  

   ginous. 
  The 
  Polynesian 
  L. 
  albofimbriatus 
  , 
  Sichel, 
  has 
  a 
  tuft 
  

   of 
  black 
  hair 
  just 
  behind 
  the 
  wings, 
  but 
  is 
  otherwise 
  practi- 
  

   cally 
  the 
  same. 
  The 
  Formosan 
  L. 
  collai'is 
  was 
  taken 
  by 
  

   Sauter 
  at 
  Pilam, 
  1908, 
  and 
  is 
  in 
  the 
  Berlin 
  Museum. 
  

  

  Andrena 
  albihirta 
  (Ashmead). 
  

  

  Mr. 
  S. 
  A. 
  Rohwer 
  took 
  both 
  sexes 
  in 
  numbers 
  at 
  flowers 
  

   of 
  Salix 
  brachycarpa, 
  at 
  Florissant, 
  Colorado, 
  June 
  1 
  and 
  2, 
  

   1907. 
  The 
  male 
  has 
  no 
  tooth 
  on 
  the 
  mandibles 
  below 
  and 
  

   is 
  not 
  the 
  same 
  as 
  A. 
  perarmata, 
  Ckll., 
  which 
  Viereck 
  in 
  1904 
  

   considered 
  synonymous. 
  True 
  male 
  A. 
  perarmata, 
  with 
  

   toothed 
  mandibles, 
  has 
  been 
  taken 
  by 
  Mrs. 
  Bennett 
  at 
  

  

  