﻿72 
  

  

  mixed. 
  Front 
  densely 
  punctured. 
  Mesonotum 
  with 
  sparse 
  irregular 
  

   larger 
  (but 
  not 
  coarse) 
  ptinctures 
  and 
  distinct, 
  very 
  minute, 
  but 
  not 
  dense, 
  

   interstitial 
  ones; 
  prcpodeum 
  with 
  more 
  or 
  less 
  evident 
  puncturation, 
  the 
  

   pitnctures 
  being 
  coarse, 
  feebly 
  impressed 
  and 
  mostly 
  obsolete. 
  Basal 
  

   abdominal 
  segment 
  with 
  shallow 
  and 
  not 
  close 
  puncturation, 
  second 
  

   strongly 
  convexly 
  raised 
  from 
  the 
  base 
  in 
  the 
  male, 
  less 
  so 
  in 
  the 
  female, 
  

   but 
  still 
  strongly 
  convex 
  in 
  profile; 
  beneath, 
  with 
  the 
  costae 
  well 
  devel- 
  

   oped, 
  the 
  depression 
  wide, 
  quite 
  deep 
  and 
  distinct. 
  Length, 
  9-11 
  mm. 
  

  

  Hab. 
  Waianae, 
  Oahu; 
  near 
  the 
  coast. 
  

  

  Odynerus 
  lithophilus. 
  

  

  Black, 
  the 
  two 
  basal 
  abdominal 
  segments 
  with 
  a 
  pale 
  j'ellow 
  apical 
  

   band; 
  the 
  female 
  usually 
  in 
  addition 
  has 
  yellow 
  markings 
  on 
  the 
  tegulae 
  

   and 
  post-scutellum, 
  a 
  small 
  medio-frontal 
  and 
  post-ocular 
  spot; 
  the 
  male 
  

   may 
  have 
  all 
  or 
  some 
  of 
  the 
  following 
  yellow 
  marks; 
  the 
  clypeus, 
  a 
  spot 
  

   on 
  the 
  mandibles, 
  a 
  line 
  on 
  the 
  antennae, 
  a 
  median 
  frontal 
  spot 
  and 
  one 
  

   behind 
  each 
  eye, 
  all 
  the 
  tibiae 
  to 
  a 
  large 
  extent, 
  coxal 
  and 
  femoral 
  spots, 
  

   the 
  base 
  of 
  some 
  of 
  the 
  tarsi, 
  spots 
  on 
  the 
  pronotum, 
  tegulae, 
  scutellum 
  

   and 
  post-scutellum. 
  

  

  Front 
  of 
  head 
  closely 
  punctured; 
  mesonotum 
  with 
  moderately 
  strong 
  

   and 
  close 
  puncturation, 
  but 
  variable 
  in 
  this 
  respect, 
  the 
  surface 
  dull 
  or 
  

   subopaque. 
  Basal 
  abdominal 
  segment 
  with 
  coarse 
  shallow 
  punctures, 
  

   second 
  beneath 
  Avith 
  distinct 
  and 
  well- 
  developed 
  costae, 
  and 
  without 
  a 
  

   definite 
  depression 
  behind 
  these. 
  Length 
  7-1 
  1 
  mm. 
  

  

  Hab. 
  Coasts 
  and 
  lowlands 
  of 
  Oahu, 
  widel}^ 
  distributed 
  and 
  

   locally 
  common. 
  

  

  Odynerus 
  epipseustes. 
  

  

  Very 
  like 
  the 
  common 
  O. 
  nigripennis 
  Holmgr. 
  but 
  of 
  larger 
  average 
  

   size, 
  with 
  the 
  iridescence 
  of 
  the 
  wings 
  brighter, 
  and 
  the 
  general 
  colour 
  of 
  

   a 
  deeper, 
  more 
  shining 
  black. 
  It 
  is 
  readily 
  distinguished 
  by 
  the 
  perfectly 
  

   developed 
  costae 
  of 
  the 
  second 
  abdominal 
  segment 
  beneath, 
  which 
  in 
  

   nigripennis 
  are 
  obsolete 
  or 
  obsolescent 
  and 
  the 
  impression 
  behind 
  the 
  

   costae 
  is 
  very 
  feebly 
  indicated, 
  the 
  surface 
  being 
  polished. 
  Length 
  

   12.5-16 
  mm. 
  

  

  Hab. 
  Mountains 
  of 
  Oahu; 
  much 
  rarer 
  — 
  one 
  in 
  tens 
  of 
  

   thousands 
  — 
  than 
  the 
  ubiquitous 
  0. 
  nigripennis. 
  

  

  Odynerus 
  tempe 
  sp. 
  nov. 
  

  

  Black, 
  somewhat 
  shining, 
  the 
  clypeus, 
  front, 
  pronotum, 
  mesopleura, 
  

   apical 
  margin 
  of 
  the 
  first 
  abdominal 
  segment, 
  and 
  sometimes 
  the 
  scutellum 
  

   and 
  propodeum 
  marked 
  with 
  red. 
  

  

  Head 
  in 
  front 
  closely 
  punctured 
  ; 
  the 
  mesonotum 
  with 
  distinct 
  punctures, 
  

   more 
  irregular 
  posteriorly, 
  the 
  interstices 
  shining 
  and 
  with 
  the 
  minute 
  

   puncturation 
  distinct; 
  scutellum 
  finely 
  but 
  distinctly 
  punctured; 
  propo- 
  

   deum 
  somewhat 
  smooth 
  and 
  with 
  conspicuous 
  punctures. 
  Basal 
  segment 
  

  

  