﻿NO. 
  1960. 
  YALE 
  PERUVIAN 
  EXPEDITION, 
  HYMENOPTERA—ROHWER. 
  453 
  

  

  Kohl's 
  idea 
  of 
  azteca, 
  judging 
  from 
  his 
  descriptions 
  and 
  a 
  letter 
  to 
  

   Fernald/ 
  is 
  the 
  same 
  as 
  Fernald's 
  if 
  we 
  add 
  the 
  variety 
  cinerea 
  to 
  

   Fernald's 
  description, 
  but 
  as 
  neither 
  of 
  these 
  descriptions 
  describes 
  as 
  

   accurately 
  as 
  desired 
  the 
  dentation 
  of 
  the 
  mandibles, 
  and 
  inasmuch 
  

   as 
  we 
  have 
  names 
  which 
  will 
  agree 
  with 
  

   all 
  the 
  forms 
  of 
  the 
  museum, 
  it 
  has 
  been 
  

   considered 
  best 
  to 
  leave 
  azteca 
  out 
  of 
  

   the 
  following 
  table. 
  Judging 
  from 
  the 
  

   original 
  des(;ription 
  of 
  azteca 
  which 
  says 
  

   ^'cinerea-liirtus," 
  the 
  variety 
  cinerea 
  

   Fernald 
  will 
  have 
  to 
  be 
  considered 
  as 
  

   the 
  same 
  as 
  azteca, 
  and 
  the 
  name 
  mac- 
  

   rocephala 
  will 
  be 
  used 
  for 
  azteca 
  Fer- 
  

   nald. 
  According 
  to 
  Fernald 
  these 
  two 
  

   would 
  well 
  be 
  considered 
  the 
  same, 
  as 
  

   there 
  seems, 
  by 
  the 
  study 
  of 
  additional 
  ^ 
  

  

  material, 
  to 
  be 
  a 
  variation 
  in 
  the 
  fig. 
  i.— 
  apices 
  of 
  mandibles 
  in 
  isodon- 
  

   amount 
  of 
  black 
  pubescence 
  on 
  cine- 
  T^^rrnJi'^^VrTSi 
  

   rea. 
  From 
  the 
  standpoint 
  of 
  the 
  types 
  cephala 
  fox 
  (type). 
  

   macrocepliala, 
  cinerea, 
  and 
  hipunctata 
  may 
  be 
  separated 
  by 
  the 
  follow- 
  

   ing 
  table 
  (see 
  fig. 
  1): 
  

   Outer 
  tooth 
  of 
  mandibles 
  much 
  longer 
  than 
  the 
  inner; 
  (head 
  and 
  thorax 
  black, 
  with 
  

  

  black 
  hair) 
  macrocephala 
  Fox 
  {=aztecum 
  Fernald). 
  

  

  Outer 
  and 
  inner 
  teeth 
  of 
  mandibles 
  of 
  equal 
  length 
  1. 
  

  

  1 
  . 
  Head 
  and 
  thorax 
  unipunctate, 
  black, 
  clothed 
  with 
  whitish 
  hair, 
  

  

  cinerea 
  Fernald 
  {—aztecum 
  var. 
  cinerum 
  Fernald). 
  

   Head 
  and 
  thorax 
  bipunctate, 
  metallic, 
  clothed 
  with 
  black 
  hair, 
  

  

  hipunctata 
  Rohwer. 
  

   Genus 
  SPHEX 
  Linnaeus. 
  

  

  SPHEX 
  (SPHEX) 
  PERUVIANUS, 
  new 
  species. 
  

  

  Apparently 
  most 
  closely 
  allied 
  to 
  SpJiex 
  [AmmopTiila] 
  volcanica 
  

   (Cameron), 
  but 
  lacks 
  the 
  pubescence 
  and 
  has 
  the 
  third 
  antenna! 
  

   joint 
  not 
  more 
  than 
  twice 
  the 
  length 
  of 
  the 
  fourth 
  and 
  the 
  propodeum 
  

   is 
  obliquely 
  striate. 
  

  

  Female. 
  — 
  Length 
  18 
  mm. 
  Head 
  broader 
  than 
  the 
  thorax, 
  opaque, 
  

   finely 
  granular 
  with 
  a 
  few 
  widely 
  separated, 
  incompletely 
  defined 
  

   punctures; 
  frontal 
  impressed 
  line 
  strong 
  but 
  not 
  complete; 
  ocelli 
  in 
  

   a 
  low 
  triangle; 
  intraocellar 
  line 
  about 
  two-thirds 
  the 
  length 
  of 
  the 
  

   postocellar 
  line; 
  postocellar 
  line 
  shorter 
  than 
  either 
  the 
  ocellocular 
  

   or 
  the 
  ocelloccipital 
  line; 
  anterior 
  margin 
  of 
  the 
  clypeus 
  truncate, 
  

   surface 
  punctured 
  like 
  the 
  head; 
  supraclypeal 
  area 
  broad, 
  flat; 
  

   antennae 
  rather 
  stout, 
  filiform, 
  third 
  antennal 
  joint 
  subequal 
  in 
  

   length 
  with 
  the 
  fourth 
  and 
  fifth; 
  pronotum 
  sculptured 
  like 
  the 
  head; 
  

  

  I 
  See 
  Proe. 
  U. 
  S. 
  Nat. 
  Mus., 
  vol. 
  31, 
  1906, 
  p. 
  356. 
  

  

  