﻿470 
  Mr. 
  Cameron 
  on 
  

  

  POMPILUS 
  UNIFASCIATUS, 
  Sm. 
  

  

  A 
  specimen 
  in 
  Mr. 
  Rothney's 
  collection 
  is 
  thus 
  named 
  

   by 
  Smith. 
  The 
  type 
  has 
  the 
  head 
  entirely 
  yellow 
  ; 
  but 
  this 
  

   example 
  has 
  a 
  broad 
  black 
  band 
  on 
  the 
  vertex 
  and 
  front. 
  

   Head 
  convex 
  in 
  front, 
  transverse, 
  with 
  the 
  sides 
  rounded 
  

   behind. 
  Ocelli 
  almost 
  in 
  a 
  triangle, 
  the 
  posterior 
  separated 
  

   from 
  the 
  eyes 
  by 
  about 
  the 
  same 
  distance 
  that 
  they 
  are 
  

   from 
  each 
  other 
  ; 
  eyes 
  arcuate 
  above, 
  beneath 
  parallel 
  ; 
  

   clypeus 
  transverse 
  at 
  the 
  apex, 
  the 
  sides 
  obliquely 
  rounded. 
  

   Prothorax 
  shorter 
  than 
  the 
  head, 
  the 
  sides 
  rounded, 
  narrowing 
  

   towards 
  the 
  head 
  ; 
  behind 
  arcuated, 
  bluntly 
  angled 
  in 
  the 
  

   centre 
  ; 
  there 
  is 
  a 
  furrow 
  in 
  the 
  middle 
  of 
  the 
  pronotum. 
  

   Legs 
  sparsely 
  spinose 
  ; 
  the 
  spines 
  long 
  ; 
  the 
  long 
  spur 
  of 
  the 
  

   hind 
  tibiae 
  reaches 
  beyond 
  the 
  middle 
  of 
  metatarsus. 
  The 
  

   second 
  recurrent 
  nervure 
  received 
  in 
  the 
  apical 
  third 
  of 
  the 
  

   cellule 
  ; 
  the 
  anal 
  in 
  hind 
  wing 
  received 
  beyond 
  the 
  termi- 
  

   nation 
  of 
  the 
  cubital. 
  

  

  ^ 
  POMPILUS 
  ELECTUS, 
  Sp. 
  710V. 
  (PI. 
  III. 
  f 
  1 
  5). 
  

  

  Black 
  ; 
  the 
  basal 
  two 
  and 
  the 
  greater 
  part 
  of 
  the 
  third 
  

   segment 
  red 
  ; 
  the 
  greater 
  part 
  of 
  the 
  front 
  and 
  the 
  base 
  of 
  

   the 
  four 
  posterior 
  tibiae 
  reddish 
  ; 
  the 
  tarsi 
  inclining 
  to 
  

   fuscous 
  ; 
  wings 
  hyaline, 
  a 
  small 
  band 
  along 
  the 
  basal 
  

   nervure, 
  and 
  a 
  broad 
  one 
  extending 
  from 
  the 
  base 
  of 
  the 
  

   stigma 
  to 
  the 
  third 
  transverse 
  cubital 
  nervure, 
  fusco- 
  

   violaceous. 
  Head 
  as 
  broad 
  as 
  the 
  thorax 
  ; 
  moderately 
  

   convex 
  in 
  front, 
  almost 
  transverse 
  behind. 
  Eyes 
  broadly 
  

   arcuate 
  above, 
  almost 
  diverging 
  below 
  ; 
  ocelli 
  hardly 
  

   forming 
  a 
  triangle, 
  separated 
  from 
  each 
  other 
  by 
  a 
  

   slightly 
  greater 
  distance 
  than 
  they 
  are 
  from 
  the 
  eyes. 
  

   Clypeus 
  projecting 
  a 
  little 
  ; 
  the 
  sides 
  oblique, 
  straight, 
  the 
  

   apex 
  bluntly 
  rounded. 
  The 
  head 
  closely 
  punctured 
  ; 
  the 
  

   clypeus 
  and 
  cheeks 
  densely 
  covered 
  with 
  silvery 
  pubescence, 
  

   the 
  frontal 
  furrow 
  indistinct. 
  Antennae 
  longish, 
  filiform. 
  

  

  