﻿350 
  H. 
  J. 
  HANSEN. 
  

  

  The 
  genital 
  area 
  (fig. 
  I 
  e) 
  is 
  a 
  little 
  broader 
  than 
  the 
  head 
  (it 
  

   is 
  not 
  visible 
  in 
  fig. 
  1 
  a, 
  being 
  situated 
  above 
  and 
  in 
  front 
  of 
  

   the 
  posterior 
  outline 
  of 
  the 
  body) 
  ; 
  it 
  is 
  a 
  transverse 
  plate 
  

   with 
  six 
  rounded 
  angles, 
  but 
  not 
  very 
  regularly 
  shaped 
  ; 
  the 
  

   posterior 
  margin 
  of 
  the 
  plate 
  is 
  straight, 
  about 
  as 
  long 
  as 
  the 
  

   postero-lateral 
  margin, 
  which 
  is 
  longer 
  than 
  the 
  antero-lateral 
  

   one 
  ; 
  the 
  front 
  margin 
  is 
  wanting, 
  the 
  large 
  anterior 
  middle 
  

   portion 
  of 
  the 
  area 
  being 
  occupied 
  by 
  membranous 
  skin. 
  The 
  

   plate 
  is 
  adorned 
  with 
  a 
  moderate 
  number 
  of 
  short, 
  stiff 
  haii-s, 
  

   each 
  originating 
  from 
  a 
  conspicuous 
  " 
  foot," 
  and 
  these 
  hairs 
  

   are 
  spread 
  very 
  irregularly. 
  The 
  genital 
  apertures 
  {(/) 
  are 
  

   rather 
  curved, 
  and 
  they 
  diverge 
  a 
  little 
  Avitli 
  their 
  anterior 
  

   third 
  ; 
  they 
  are 
  placed 
  in 
  the 
  penultimate 
  fourth 
  part 
  of 
  the 
  

   plate, 
  and 
  the 
  distance 
  between 
  them 
  at 
  the 
  middle 
  is 
  some- 
  

   what 
  shorter 
  than 
  the 
  length 
  of 
  one 
  of 
  them. 
  The 
  caudal 
  

   stylets 
  {st) 
  are 
  situated 
  close 
  together, 
  at 
  a 
  good 
  distance 
  in 
  

   front 
  of 
  the 
  posterior 
  margin 
  of 
  the 
  plate, 
  a 
  little 
  behind 
  the 
  

   genital 
  apertures. 
  

  

  Male. 
  — 
  The 
  single 
  specimen 
  (figs. 
  lh,lf, 
  and 
  1 
  g) 
  measures 
  

   •3 
  mm. 
  in 
  length, 
  and 
  '213 
  mm. 
  in 
  breadth 
  ; 
  it 
  is 
  thus 
  nearly 
  

   six 
  times 
  shorter, 
  and 
  between 
  seven 
  and 
  eight 
  times 
  narrower 
  

   than 
  the 
  female. 
  8een 
  from 
  below 
  the 
  head 
  occupies 
  a 
  little 
  

   more 
  than 
  one 
  third 
  of 
  the 
  length 
  ; 
  its 
  lateral 
  outlines 
  from 
  

   the 
  antennie 
  backwards 
  diverge 
  rather 
  feebly, 
  but 
  where 
  the 
  

   subglobular 
  trunk 
  begins 
  the 
  lateral 
  margins 
  begin 
  to 
  diverge 
  

   strongly. 
  The 
  frontal 
  border 
  has 
  a 
  fringe 
  of 
  fine 
  hairs. 
  The 
  

   antennulfe 
  are 
  rather 
  slender, 
  of 
  moderate 
  length, 
  very 
  dis- 
  

   tinctly 
  three-jointed; 
  the 
  setse 
  on 
  the 
  distal 
  front 
  angle 
  of 
  the 
  

   first 
  joint, 
  and 
  especially 
  those 
  at 
  the 
  apex 
  of 
  the 
  third 
  joint 
  

   are 
  long. 
  The 
  antennas 
  (h) 
  are 
  rather 
  well 
  developed, 
  nearly 
  

   as 
  in 
  the 
  female 
  ; 
  the 
  basal 
  joint 
  is 
  much 
  longer 
  than 
  the 
  

   second, 
  which 
  is 
  longer 
  than 
  the 
  third, 
  the 
  latter 
  one 
  is 
  short 
  

   and 
  terminates 
  in 
  a 
  rather 
  short 
  seta. 
  The 
  border 
  of 
  the 
  

   mouth 
  is 
  moderately 
  broad. 
  The 
  maxillulse 
  [d] 
  have 
  a 
  well- 
  

   developed 
  additional 
  branch 
  {d^). 
  The 
  maxillas 
  (e) 
  are 
  

   medium 
  sized, 
  the 
  basal 
  joint 
  with 
  a 
  rounded 
  protuberance 
  

   on 
  the 
  posterior 
  side. 
  The 
  submedian 
  skeleton 
  has 
  a 
  chitinous 
  

  

  