﻿162 
  BRUCE 
  F. 
  CUMMINGS. 
  

  

  On 
  the 
  margin 
  of 
  each 
  pleural 
  plate 
  are 
  two 
  long 
  hairs 
  (fig. 
  3a). 
  On 
  the 
  dorsal 
  side, 
  

   in 
  the 
  pleural 
  area 
  of 
  segment 
  2, 
  is 
  an 
  irregular 
  patch 
  of 
  short 
  hairs 
  ; 
  on 
  segment 
  3 
  

   a 
  row 
  of 
  three 
  long 
  hairs 
  with 
  a 
  fourth 
  behind 
  ; 
  on 
  segment 
  4 
  a 
  row 
  of 
  four 
  long 
  hairs 
  

   and 
  one 
  behind 
  ; 
  on 
  segment 
  5, 
  of 
  five 
  long 
  hairs 
  ; 
  on 
  segment 
  6, 
  of 
  four 
  long 
  hairs 
  ; 
  

   on 
  segment 
  7 
  there 
  is 
  a 
  row 
  of 
  three 
  long 
  hairs 
  and 
  one 
  behind 
  ; 
  and 
  on 
  segment 
  8 
  

   three 
  short 
  hairs 
  irregularly 
  placed. 
  The 
  termination 
  of 
  each 
  of 
  the 
  two 
  finger-shaped 
  

   processes 
  at 
  the 
  end 
  of 
  the 
  abdomen 
  is 
  armed 
  with 
  a 
  number 
  of 
  strong 
  recurved 
  

   denticles. 
  On 
  the 
  ventral 
  surface 
  there 
  is 
  a 
  single 
  row 
  of 
  hairs 
  on 
  each 
  segment, 
  

   excepting 
  segment 
  8, 
  which 
  has 
  only 
  two 
  hairs, 
  one 
  on 
  each 
  side 
  of 
  the 
  basal 
  plate. 
  

   Further 
  down 
  are 
  two 
  more 
  hairs, 
  one 
  on 
  each 
  side 
  of 
  the 
  elongate 
  mesosome 
  

   of 
  the 
  copulatory 
  apparatus. 
  

  

  On 
  the 
  head 
  there 
  are 
  two 
  brown 
  " 
  taches 
  " 
  in 
  front 
  of 
  the 
  antennae, 
  one 
  on 
  each 
  

   side, 
  and 
  there 
  is 
  a 
  small 
  brown 
  mark 
  in 
  each 
  ocular 
  emargination. 
  

  

  Chaetotaxy, 
  Female. 
  — 
  Abdomen 
  with 
  two 
  longitudinal 
  bare 
  areas 
  as 
  in 
  the 
  male. 
  

   Segment 
  9 
  is 
  bare 
  on 
  the 
  dorsal 
  surface, 
  except 
  for 
  four 
  hairs 
  on 
  each 
  side 
  in 
  a 
  short 
  

   transverse 
  row, 
  situated 
  along 
  the 
  lower 
  margin 
  of 
  the 
  extreme 
  lateral 
  portions 
  of 
  the 
  

   terminal 
  dark 
  band. 
  On 
  the 
  ventral 
  surface 
  the 
  hairs, 
  as 
  in 
  the 
  male, 
  are 
  

   less 
  numerous 
  than 
  they 
  are 
  on 
  the 
  dorsal 
  surface, 
  and 
  thinner, 
  shorter 
  and 
  more 
  

   widely 
  spaced. 
  They 
  are 
  arranged 
  (somewhat 
  irregularly) 
  in 
  two 
  rows 
  on 
  each 
  seg- 
  

   ment, 
  excepting 
  on 
  segments 
  8 
  and 
  9, 
  the 
  former 
  having 
  a 
  batch 
  of 
  minute 
  hairs 
  

   on 
  the 
  genital 
  plate, 
  and 
  the 
  latter 
  with 
  the 
  hairs 
  arranged 
  on 
  the 
  gonopods 
  and 
  

   genital 
  plate 
  as 
  described 
  immediately 
  below, 
  i.e., 
  there 
  is 
  a 
  group 
  of 
  four 
  hairs 
  of 
  

   medium 
  length 
  on 
  the 
  lower 
  part 
  of 
  each 
  gonopod 
  and 
  two 
  smaller 
  ones 
  on 
  the 
  inside 
  

   of 
  these. 
  Over 
  the 
  triangular 
  genital 
  plate 
  there 
  is 
  a 
  patch 
  of 
  10 
  minute 
  hairs 
  arising 
  

   from 
  large 
  alveoli. 
  There 
  is 
  a 
  powerful 
  spine 
  on 
  each 
  side 
  of 
  the 
  genital 
  opening, 
  

   standing 
  in 
  a 
  group 
  of 
  smaller 
  hairs. 
  A 
  short 
  longitudinal 
  row 
  of 
  hairs 
  runs 
  from 
  the 
  

   base 
  of 
  each 
  gonopod 
  backwards, 
  passing 
  outside 
  the 
  spine 
  to 
  the 
  margin. 
  

  

  On 
  the 
  dorsal 
  surface 
  of 
  the 
  last 
  abdominal 
  segment, 
  a 
  narrow 
  band 
  of 
  dark-coloured 
  

   chitin 
  runs 
  in 
  a 
  semi-circular 
  fashion 
  from 
  one 
  lateral 
  margin 
  to 
  the 
  other. 
  The 
  concave 
  

   side 
  of 
  the 
  band 
  is 
  posterior, 
  and 
  the 
  two 
  lateral 
  ends 
  on 
  reaching 
  the 
  pleurae 
  double 
  

   back 
  beneath 
  to 
  the 
  ventral 
  side, 
  where 
  they 
  carry 
  the 
  large 
  spine 
  and 
  group 
  of 
  hairs 
  

   which 
  guard 
  the 
  opening 
  to 
  the 
  genital 
  organs. 
  

  

  Mouth-parts. 
  — 
  Mandibles 
  of 
  the 
  shape 
  and 
  in 
  the 
  position 
  of 
  those 
  figured 
  for 
  

   Haematopinus 
  taurotragi 
  are 
  absent. 
  Enderlein 
  (7) 
  in 
  his 
  description 
  of 
  the 
  mouth- 
  

   parts 
  of 
  Pediculus 
  vestimenti 
  regards 
  the 
  lateral 
  " 
  taches 
  " 
  as 
  containing 
  the 
  

   vestigial 
  remains 
  of 
  the 
  mandibles, 
  which 
  are 
  so 
  well 
  developed 
  apparently 
  throughout 
  

   the 
  genus 
  Haematopinus. 
  These 
  " 
  taches," 
  however, 
  appear 
  to 
  be 
  no 
  more 
  than 
  

   coloured 
  and 
  strongly 
  chitinised 
  supports 
  for 
  the 
  sides 
  of 
  the 
  proboscis, 
  and 
  

   resemble 
  similar 
  chitinous 
  thickenings 
  on 
  the 
  ocular 
  emarginations 
  and 
  on 
  the 
  

   temples 
  and 
  elsewhere. 
  I 
  have 
  tentatively 
  suggested 
  in 
  fig 
  3 
  b, 
  that 
  the 
  two 
  small 
  

   pieces 
  one 
  on 
  each 
  side 
  of 
  the 
  oesophagus 
  in 
  front 
  may 
  be 
  homologous 
  with 
  the 
  

   mandibles. 
  The 
  larynx 
  is 
  quite 
  characteristic 
  of 
  this 
  species, 
  being 
  transversely 
  

   furrowed 
  and 
  roughly 
  heart-shaped. 
  

  

  Male 
  Copulatory 
  Apparatus* 
  — 
  The 
  paramera 
  are 
  so 
  closely 
  applied 
  to 
  the 
  mesosome 
  

  

  * 
  The 
  terminology 
  adopted 
  in 
  this 
  and 
  other 
  descriptions 
  of 
  the 
  copulatory 
  apparatus 
  

   of 
  the 
  male 
  is 
  that 
  suggested 
  by 
  the 
  Rev. 
  James 
  Waterston 
  (8). 
  

  

  