﻿254 
  

  

  JAMES 
  WATERSTON. 
  

  

  of 
  the 
  vertex 
  above 
  the 
  eye. 
  Eye 
  glabrous, 
  touching 
  the 
  vertex 
  at 
  its 
  upper 
  angle 
  ; 
  

   in 
  proportion 
  to 
  the 
  rest 
  of 
  the 
  head 
  small, 
  occupying 
  only 
  about 
  one-third 
  of 
  the 
  

   length 
  and 
  less 
  than 
  one-fourth 
  of 
  the 
  breadth, 
  i.e., 
  the 
  distance 
  between 
  the 
  eyes 
  

   is 
  greater 
  than 
  their 
  combined 
  breadth 
  ; 
  the 
  head, 
  moreover, 
  is 
  so 
  flat 
  that 
  the 
  

   greater 
  part 
  of 
  the 
  eye 
  lies 
  on 
  the 
  dorsal 
  or 
  morphologically 
  frontal 
  aspect. 
  Head 
  

   produced 
  below 
  the 
  eyes, 
  with 
  one, 
  and 
  after 
  an 
  interval 
  4 
  hairs 
  at 
  the 
  side 
  ; 
  a 
  

  

  Fig. 
  3. 
  Sycoecus 
  thaumastocnema, 
  sp. 
  nov. 
  ; 
  a, 
  mandible, 
  from 
  above 
  ; 
  a\ 
  mandible, 
  

   side 
  view 
  ; 
  b, 
  antenna 
  ; 
  c, 
  apex 
  of 
  ovipositor 
  ; 
  d, 
  stylet. 
  

  

  number 
  of 
  excessively 
  minute 
  bristles 
  on 
  the 
  upper 
  surface, 
  irregularly 
  disposed, 
  

   but 
  more 
  numerous 
  towards 
  the 
  mouth 
  edge. 
  Clypeus 
  with 
  the 
  lateral 
  angles 
  reduced 
  

   and 
  rounded, 
  its 
  apical 
  margin 
  just 
  slightly 
  entrant, 
  then 
  produced 
  into 
  two 
  broad 
  

   lobes 
  with 
  a 
  considerable 
  incision 
  between. 
  Antennae 
  (fig. 
  2, 
  b) 
  with 
  the 
  scape 
  long 
  

   and 
  slender 
  (6:1), 
  with 
  sub-parallel 
  sides 
  ; 
  pedicel 
  short, 
  expanded 
  distally 
  ; 
  two 
  ring 
  

   joints, 
  closely 
  united, 
  the 
  first 
  minute 
  ; 
  the 
  first 
  joint 
  of 
  the 
  funicle 
  (5th) 
  is 
  the 
  

   broadest 
  in 
  the 
  antenna, 
  the 
  breadth 
  being 
  nearly 
  equal 
  to 
  the 
  length 
  ; 
  the 
  sides 
  

   strongly 
  convex, 
  joints 
  6 
  and 
  7 
  cylindrical, 
  subequal 
  and 
  twice 
  as 
  long 
  as 
  broad 
  ; 
  

   the 
  eighth 
  shorter, 
  a 
  little 
  expanded 
  distally 
  ; 
  the 
  club 
  consists 
  of 
  three 
  divisions, 
  

   of 
  which 
  the 
  first 
  is 
  the 
  longest, 
  the 
  last 
  joint 
  showing 
  a 
  minute 
  apical 
  darker 
  point, 
  

   which 
  can 
  hardly 
  rank 
  as 
  a 
  joint. 
  There 
  appears 
  to 
  be 
  no 
  special 
  apical 
  sense 
  organ, 
  

   unless 
  indeed 
  the 
  region 
  just 
  referred 
  to 
  be 
  such 
  ; 
  joints 
  5-11 
  bear 
  numerous 
  hairs 
  

   and 
  longitudinal 
  sensory 
  channels 
  terminating 
  apically 
  in 
  sharp 
  points 
  of 
  clear 
  

   chitin, 
  raised 
  a 
  little 
  from 
  the 
  segment 
  surface 
  to 
  form 
  a 
  crown 
  at 
  the 
  suture. 
  

  

  Mouth-parts. 
  — 
  Mandibles 
  (fig. 
  3, 
  a) 
  powerful, 
  on 
  the 
  outer 
  aspect 
  three 
  strong 
  

   triangular 
  ridge-like 
  teeth, 
  a 
  fourth 
  at 
  the 
  apex 
  and 
  within 
  two 
  smaller 
  sub-apical 
  

   ones 
  ; 
  seen 
  from 
  above, 
  the 
  posterior 
  two 
  -thirds 
  of 
  the 
  mandible 
  is 
  flat, 
  consisting 
  of 
  

   two 
  rounded 
  lobes, 
  by 
  the 
  posterior 
  of 
  which 
  articulation 
  with 
  the 
  clypeus 
  is 
  

   secured. 
  Trophi 
  (fig. 
  4, 
  d) 
  normally 
  developed 
  ; 
  maxilla 
  with 
  the 
  cardo 
  short, 
  

   stipes 
  three 
  times 
  as 
  long 
  as 
  broad, 
  bare 
  on 
  ventral 
  aspect, 
  galea 
  anteriorly 
  

   incurved, 
  with 
  5 
  straight 
  bristles 
  on 
  the 
  distal 
  half, 
  the 
  apical 
  being 
  longest. 
  

   Maxillary 
  palpus 
  4-jointed 
  (5, 
  5, 
  6, 
  9), 
  third 
  joint 
  with 
  one 
  bristle, 
  fourth 
  with 
  

   a 
  long 
  apical 
  bristle 
  and 
  a 
  slighter 
  one 
  near 
  the 
  base. 
  Labium 
  bare, 
  palpus 
  

   2- 
  jointed, 
  with 
  a 
  minute 
  sub-apical 
  and 
  a 
  long 
  straight 
  terminal 
  bristle. 
  Lingua 
  

   with 
  4 
  short 
  stiff 
  hairs 
  on 
  one- 
  jointed 
  tubercles. 
  

  

  