﻿the 
  A[)iJa; 
  in 
  the 
  British 
  Museum. 
  40;') 
  

  

  In 
  tlie 
  moutli-parts 
  of 
  the 
  two 
  Prosopine 
  genera 
  PaJceorhiza 
  

   and 
  Meroglossa. 
  In 
  these 
  two 
  genera 
  the 
  females 
  have 
  the 
  

   ordinai'j 
  blunt 
  form 
  of 
  other 
  Prosopidiiise, 
  but 
  in 
  the 
  male 
  

   the 
  apex 
  of 
  the 
  ligula 
  is 
  acute, 
  though 
  the 
  tongue 
  is 
  not 
  of 
  

   any 
  length. 
  In 
  Eupalceorliiza, 
  however, 
  tlie 
  length 
  of 
  the 
  

   tongue 
  equals 
  or 
  surpasses 
  that 
  of 
  Panurgiis 
  and 
  similar 
  forms. 
  

   Unfortunately 
  the 
  female 
  is 
  unknown, 
  so 
  that 
  no 
  very 
  definite 
  

   conclusions 
  can 
  at 
  present 
  be 
  drawn 
  from 
  a 
  study 
  of 
  tiiis 
  new 
  

   and 
  exceedingly 
  interesting 
  species. 
  Tiie 
  following 
  note 
  from 
  

   Dr. 
  R. 
  C. 
  L. 
  Perkins, 
  whose 
  intimate 
  knowledge 
  of 
  bee- 
  

   phylogeny 
  adds 
  special 
  weighty 
  is 
  worthy 
  of 
  the 
  attention 
  of 
  

   all 
  apidologists 
  :■ 
  — 
  •"'Should 
  it 
  [/. 
  e. 
  the 
  tongue 
  of 
  ? 
  Eupalmo^ 
  

   rhiza^ 
  prove 
  to 
  be 
  acute, 
  it 
  would 
  still 
  further 
  convince 
  me 
  

   of 
  the 
  truth 
  of 
  the 
  view 
  that 
  1 
  have 
  held 
  for 
  some 
  time, 
  that 
  

   the 
  Colletidse 
  and 
  Prosopidae 
  have 
  been 
  developed 
  from 
  tlie 
  

   Andrenid 
  group 
  (including 
  the 
  Panurgine 
  bees), 
  and 
  are 
  iu 
  

   no 
  ways 
  to 
  be 
  considered 
  as 
  ancestral 
  or 
  primitive 
  forms," 
  

  

  EuPALiEORHiZA, 
  gen. 
  nov. 
  

   (Type, 
  Eiipalceorhiza 
  papuana, 
  M.-Waldo.) 
  

  

  General 
  appearance 
  that 
  of 
  a 
  very 
  large 
  Palceorhiza, 
  the 
  

   face 
  being 
  extremely 
  long 
  and 
  narrow 
  between 
  the 
  eyes; 
  the 
  

   gt'ine 
  (space 
  between 
  the 
  mandibles 
  and 
  eyes) 
  very 
  long, 
  as 
  

   long 
  or 
  longer 
  than 
  their 
  apical 
  width. 
  Neuration 
  as 
  in 
  

   many 
  Palceorhiza. 
  Ligula 
  very 
  long, 
  lanceolate-acuminate, 
  

   only 
  hairy 
  at 
  the 
  extreme 
  base 
  even 
  under 
  a 
  very 
  strong 
  lens, 
  

   linear 
  on 
  more 
  than 
  the 
  apical 
  half 
  of 
  its 
  length. 
  In 
  repose 
  

   the 
  ligula 
  is 
  folded 
  back 
  on 
  the 
  raentum, 
  its 
  apex 
  reaching 
  

   back 
  to 
  the 
  front 
  of 
  the 
  thorax, 
  and 
  the 
  maxillary 
  blades 
  or 
  

   lacinia; 
  are 
  much 
  too 
  short 
  to 
  cover 
  it. 
  Maxillary 
  palpi 
  

   G-jointed, 
  the 
  two 
  basal 
  joints 
  more 
  robust 
  than 
  the 
  third, 
  

   but 
  elongate, 
  the 
  three 
  apical 
  ones 
  very 
  slender 
  and 
  elon, 
  

   gate; 
  labial 
  palpi 
  with 
  four 
  slender 
  elongate 
  joints. 
  Pro- 
  

   podeum 
  with 
  the 
  anterior 
  area 
  very 
  clearly 
  detiued 
  by 
  a 
  

   total 
  cliange 
  of 
  sculpture 
  outside 
  it, 
  as 
  in 
  many 
  Pa/ceorhiztr, 
  

   but 
  of 
  very 
  diflferent 
  form, 
  not 
  a.t 
  all 
  transverse, 
  but 
  forming 
  

   a 
  subequilateral 
  triangle, 
  instead 
  of 
  being 
  wide 
  and 
  transverse. 
  

   Abdomen 
  with 
  the 
  seventh 
  dorsal 
  segment 
  emarginate 
  as 
  in 
  

   Palceorhiza, 
  but 
  only 
  five 
  ventral 
  segments 
  are 
  exposed 
  

   unless 
  the 
  abdomen 
  be 
  distended, 
  the 
  fourth 
  slightly 
  emar- 
  

   ginate, 
  the 
  fifth 
  extraordinaiily 
  short, 
  concealed 
  beneath 
  the 
  

   former, 
  and 
  highly 
  modified, 
  strongly 
  emarginate 
  so 
  as 
  to 
  

   be 
  lobed 
  on 
  each 
  side 
  ; 
  its 
  apical 
  portion 
  bent 
  at 
  an 
  angle 
  

   with 
  the 
  general 
  surface, 
  fringed 
  above 
  with 
  special 
  black 
  

   hairs 
  directed 
  towards 
  the 
  middle, 
  and 
  beneath 
  these 
  with 
  

  

  28* 
  

  

  