﻿338 
  JAMES 
  WATERSTON. 
  

  

  8:9:10, 
  the 
  first 
  as 
  wide 
  as 
  long, 
  the 
  next 
  two 
  longer 
  than 
  wide 
  ; 
  the 
  joints 
  bear 
  from 
  

   six 
  to 
  ten 
  or 
  more 
  sensoria. 
  Club 
  joints 
  practically 
  equal 
  in 
  length 
  (15:15:14), 
  but 
  

   the 
  second 
  is 
  broadest, 
  while 
  the 
  third 
  is 
  suddenly 
  tapered 
  ; 
  terminal 
  hair 
  of 
  spur 
  

   short 
  and 
  fine, 
  not 
  more 
  than 
  a 
  quarter 
  of 
  the 
  third 
  club 
  joint 
  ; 
  club 
  as 
  a 
  whole 
  defin- 
  

   itely 
  wider 
  than 
  the 
  funicle. 
  Length 
  of 
  antenna, 
  -75 
  mm. 
  

  

  Mouth-parts 
  : 
  mandibles 
  (fig. 
  5, 
  b), 
  outer 
  (ventral) 
  edge 
  gently 
  concave 
  towards 
  

   the 
  base, 
  bidentate 
  ; 
  outer 
  tooth 
  smaller, 
  separated 
  by 
  a 
  sharp 
  but 
  not 
  deep 
  notch 
  

   from 
  the 
  inner, 
  which 
  is 
  broad, 
  with 
  straight, 
  truncated 
  apex 
  projecting 
  a 
  little 
  beyond 
  

   the 
  outer 
  tooth. 
  Inner 
  edge 
  of 
  the 
  second 
  tooth 
  slightly 
  swollen, 
  as 
  is 
  also 
  the 
  basal 
  

   two-thirds 
  of 
  the 
  inner 
  edge, 
  which 
  as 
  a 
  whole 
  is 
  concave 
  at 
  the 
  base 
  of 
  the 
  second 
  

   tooth. 
  Maxillary 
  palpus 
  two 
  and 
  a 
  half 
  times 
  as 
  long 
  as 
  the 
  labial 
  palpus 
  ; 
  cardo 
  

   with 
  two 
  bristles, 
  one 
  larger 
  lateral, 
  the 
  other 
  opposite 
  the 
  base 
  of 
  the 
  palpus. 
  Two 
  ( 
  ? 
  ) 
  

   short 
  bristles 
  just 
  behind 
  the 
  base 
  of 
  the 
  palpi 
  on 
  the 
  men 
  turn 
  ; 
  four 
  short 
  

   bristles 
  from 
  single 
  cells 
  in 
  the 
  lingua. 
  The 
  labrum 
  bears 
  anteriorly 
  two 
  strong 
  median 
  

   and 
  two 
  weaker 
  lateral 
  bristles 
  (1, 
  2. 
  1.) 
  

  

  Thorax 
  : 
  prothorax 
  semicircularly 
  emarginate 
  at 
  the 
  spiracle, 
  with 
  bare 
  triangular 
  

   area 
  (whose 
  base 
  occupies 
  the 
  median 
  one-third 
  of 
  the 
  posterior 
  margin) 
  flanked 
  

   on 
  either 
  side 
  by 
  about 
  ten 
  microscopic 
  bristles 
  ; 
  posterior 
  row 
  of 
  bristles 
  3,3, 
  and 
  one 
  

   additional, 
  stronger 
  at 
  the 
  spiracle 
  ; 
  the 
  whole 
  surface 
  evenly 
  and 
  moderately 
  retic- 
  

   ulate. 
  Mesothorax 
  with 
  the 
  parapsidal 
  furrows 
  straight, 
  except 
  for 
  a 
  slight 
  out- 
  

   ward 
  bend 
  anteriorly 
  ; 
  mid 
  lobe 
  black, 
  gleaming, 
  surface 
  covered 
  by 
  an 
  extremely 
  

   fine 
  (especially 
  medianly) 
  drawn 
  out 
  reticulation 
  ; 
  on 
  the 
  inside 
  of 
  each 
  furrow 
  are 
  

   three 
  bristles 
  ; 
  parapsides 
  invaded 
  very 
  deeply 
  (to 
  beyond 
  one-half 
  anteriorly 
  from 
  

   the 
  suture), 
  with 
  two 
  bristles 
  ; 
  at 
  the 
  middle 
  of 
  the 
  suture 
  the 
  mid 
  lobe 
  is 
  narrowly 
  

   depressed 
  for 
  a 
  short 
  distance 
  forward, 
  but 
  no 
  definite 
  furrow 
  is 
  formed. 
  Scutellum 
  

   square, 
  with 
  two 
  strong 
  lateral 
  furrows 
  and 
  two 
  faint 
  impressed 
  lines 
  inside 
  ; 
  retic- 
  

   ulation 
  similar 
  to 
  that 
  of 
  mid 
  lobe. 
  Mesosternum 
  distinctly, 
  and 
  mesopleurae 
  rather 
  

   faintly 
  reticulate 
  ; 
  mesoprepectus 
  narrow 
  and 
  wedge-shaped. 
  Metathorax 
  with 
  

   the 
  middle 
  area 
  rather 
  narrow, 
  reticulate 
  ; 
  side 
  areas 
  smooth, 
  with 
  one 
  or 
  two 
  irregular 
  

   rugae. 
  Propodaeum 
  with 
  a 
  short 
  central 
  keel, 
  deeply 
  emarginate 
  (to 
  one-half) 
  

   posteriorly, 
  reticulate, 
  hardly 
  raised 
  ; 
  spiracle 
  large, 
  oval, 
  with 
  a 
  longish 
  bristle 
  

   outside 
  and 
  two 
  shorter 
  in 
  line 
  posteriorly. 
  

  

  Wings 
  : 
  fore 
  wings 
  with 
  the 
  veins 
  stout 
  and 
  black, 
  marginal 
  ciliation 
  moderate 
  ; 
  

   submarginal 
  cell 
  narrow, 
  with 
  about 
  a 
  dozen 
  bristles. 
  Submarginal 
  vein 
  with 
  two 
  

   bristles 
  ; 
  marginal 
  vein 
  with 
  less 
  than 
  a 
  dozen 
  larger 
  fringing 
  bristles, 
  and 
  many 
  

   others 
  shorter 
  ; 
  radius 
  thick, 
  slightly 
  expanded 
  towards 
  the 
  apex, 
  concavely 
  truncate, 
  

   four 
  cells 
  and 
  six 
  bristles. 
  Submarginal 
  ; 
  marginal 
  : 
  radius, 
  as 
  10 
  : 
  15 
  : 
  4. 
  Length, 
  

   1*45; 
  breadth, 
  -65 
  mm. 
  Hind 
  wings 
  with 
  the 
  veins 
  thick 
  ; 
  submarginal: 
  marginal, 
  

   as 
  5 
  :6. 
  Length, 
  1*1 
  mm. 
  ; 
  breadth, 
  *25 
  mm. 
  

  

  Legs 
  : 
  not 
  densely 
  clothed 
  ; 
  all 
  the 
  coxae, 
  trochanters 
  and 
  femora 
  (except 
  in- 
  

   distinctly 
  near 
  the 
  apex) 
  blackish 
  ; 
  the 
  tibiae 
  fuscous, 
  almost 
  black 
  ; 
  the 
  tarsal 
  

   joints 
  concolorous 
  with 
  the 
  tibiae, 
  those 
  of 
  the 
  mid 
  legs 
  somewhat 
  paler. 
  Fore 
  legs 
  

   with 
  the 
  ventral 
  fringing 
  hairs 
  short 
  and 
  weak, 
  pre-apical 
  bristle 
  inconspicous 
  ; 
  tibia 
  

   with 
  single 
  short 
  stout 
  apical 
  spine, 
  and 
  a 
  row 
  of 
  about 
  ten 
  short 
  bristles 
  on 
  outer 
  

   aspect 
  ; 
  across 
  the 
  apex 
  a 
  comb 
  of 
  four 
  spines 
  ; 
  first 
  tarsal 
  joint 
  with, 
  on 
  the 
  inside, 
  

   a 
  longitudinal 
  comb 
  of 
  six 
  short 
  still 
  bristles. 
  Mid 
  legs 
  with 
  the 
  femora 
  almost 
  

  

  