﻿FIVE 
  NEW 
  SPECIES 
  OF 
  ANOPLURA 
  AND 
  MALLOPHAGA. 
  173 
  

  

  Goniocotes 
  waterstoni, 
  sp. 
  nov. 
  (fig. 
  8). 
  

  

  The 
  specimens 
  on 
  which 
  this 
  description 
  is 
  based 
  were 
  presented 
  to 
  the 
  British 
  

   Museum 
  in 
  1913 
  by 
  the 
  Hon. 
  N. 
  C. 
  Rothschild 
  and 
  were 
  collected 
  by 
  R. 
  N. 
  Atkinson 
  

   in 
  November 
  1912, 
  on 
  the 
  penguin, 
  Eudyptula 
  minor, 
  in 
  the 
  Furneaux 
  Islands. 
  

  

  G. 
  waterstoni 
  stands 
  nearest 
  to 
  G. 
  bifasciatus, 
  Piaget 
  (3, 
  p. 
  47), 
  from 
  Spheniscus 
  

   demersus, 
  with 
  which, 
  through 
  the 
  kindness 
  of 
  the 
  Rev. 
  James 
  Waterston, 
  I 
  have 
  

   been 
  able 
  to 
  compare 
  it. 
  The 
  present 
  species 
  differs 
  in 
  its 
  shorter 
  head, 
  in 
  the 
  form 
  

   of 
  the 
  male 
  genitalia, 
  and 
  its 
  antennae. 
  

  

  External 
  Form, 
  Male. 
  — 
  Head 
  : 
  Preantennary 
  margin 
  perfectly 
  rounded. 
  Anten- 
  

   nary 
  sinus 
  large, 
  roofed 
  in 
  dorsally 
  by 
  transparent 
  chitin. 
  Its 
  posterior 
  corner 
  

   is 
  produced 
  forwards 
  into 
  an 
  angle 
  with 
  several 
  small 
  hairs 
  on 
  it. 
  Immediately 
  

   behind 
  this 
  angular 
  projection 
  at 
  the 
  side 
  of 
  the 
  head 
  is 
  the 
  eye, 
  which 
  carries 
  a 
  short 
  

   spine. 
  Antenna 
  almost 
  four-segmented, 
  as 
  the 
  fifth 
  segment 
  is 
  very 
  small 
  and 
  

   partly 
  fused 
  with 
  the 
  fourth. 
  The 
  first 
  segment 
  is 
  the 
  largest, 
  equal 
  in 
  length 
  to 
  

   half 
  the 
  length 
  of 
  the 
  whole 
  antenna, 
  swollen. 
  Temples 
  with 
  two 
  angles, 
  the 
  rounded 
  

   anterior 
  one 
  carried 
  outwards 
  so 
  as 
  to 
  make 
  the 
  post-antennal 
  area 
  of 
  the 
  head 
  almost 
  

   as 
  broad 
  as 
  the 
  abdomen. 
  The 
  posterior 
  angles 
  are 
  produced 
  backwards 
  on 
  either 
  

   side 
  of 
  the 
  occiput 
  so 
  as 
  to 
  embrace 
  the 
  prothorax 
  (fig. 
  8 
  a). 
  The 
  two 
  occipital 
  

   apodemes 
  tapering 
  and 
  slightly 
  convergent. 
  Thorax 
  : 
  The 
  prothorax 
  is 
  broad 
  and 
  

   short, 
  the 
  hind 
  margin 
  of 
  the 
  pronotum 
  convex 
  on 
  the 
  metanotum. 
  The 
  endo- 
  

   skeleton 
  shows, 
  as 
  usual, 
  the 
  two 
  clavicles 
  running 
  upwards 
  and 
  forwards 
  from 
  the 
  

   prosternal 
  region 
  to 
  the 
  anterior 
  lateral 
  corners. 
  The 
  upper 
  part 
  of 
  each 
  clavicle 
  is 
  

   slender 
  and 
  narrow, 
  the 
  lower 
  part 
  broadening 
  out. 
  The 
  main 
  difference 
  between 
  the 
  

   prothoracic 
  endo-skeleton 
  and 
  that 
  in 
  the 
  other 
  species 
  here 
  described 
  is 
  that 
  the 
  

   clavicles 
  do 
  not 
  descend 
  very 
  appreciably 
  from 
  the 
  anterior 
  corner 
  of 
  the 
  pronotum 
  

   towards 
  the 
  prosternum 
  but 
  abut 
  against, 
  without 
  actually 
  fusing 
  with, 
  two 
  small 
  

   rectangular 
  plates 
  lying 
  within 
  the 
  rear 
  part 
  of 
  the 
  prothorax. 
  These 
  two 
  small 
  

   plates 
  lie 
  above 
  and 
  are 
  apparently 
  connected 
  with 
  two 
  larger 
  plates 
  of 
  irregular 
  

   outline, 
  representing 
  perhaps 
  the 
  prosternite. 
  These 
  extend 
  below 
  the 
  hind 
  margin 
  

   of 
  the 
  prosternum 
  and 
  their 
  ends 
  lie 
  between 
  the 
  coxae 
  of 
  the 
  second 
  pair 
  of 
  legs 
  ; 
  

   each 
  receives 
  the 
  inner 
  end 
  of 
  two 
  deep 
  brown 
  strongly 
  chitinised 
  bands 
  or 
  septa 
  

   which 
  run 
  in 
  along 
  the 
  ventral 
  side 
  between 
  the 
  pro- 
  and 
  meso-metathorax 
  from 
  the 
  

   sides. 
  Metathorax 
  broader 
  than 
  the 
  prothorax, 
  each 
  side 
  running 
  out 
  into 
  a 
  pro- 
  

   jection. 
  Abdomen 
  : 
  Segments 
  8, 
  spiracles 
  6. 
  Pleurites 
  with 
  their 
  internal 
  free 
  ends 
  

   rounded. 
  First 
  pleurite 
  narrower 
  from 
  left 
  to 
  right 
  than 
  the 
  others, 
  the 
  external 
  

   " 
  beak 
  " 
  being 
  very 
  small 
  and 
  partly 
  fused 
  with 
  the 
  next 
  pleurite. 
  Terminal 
  segment 
  

   extremely 
  convex 
  (as 
  usual 
  in 
  Goniodidae). 
  The 
  genital 
  chamber 
  opens 
  by 
  a 
  semi- 
  

   circular 
  slit 
  upon 
  the 
  dorsal 
  surface. 
  

  

  External 
  Form, 
  Female. 
  — 
  Head 
  : 
  Antennary 
  sinus 
  not 
  so 
  large, 
  its 
  anterior 
  and 
  

   posterior 
  angles 
  being 
  less 
  pronounced. 
  Antennae 
  small. 
  Segment 
  1 
  the 
  largest, 
  

   but 
  much 
  smaller 
  than 
  segment 
  1 
  in 
  the 
  <$. 
  Segment 
  5 
  more 
  developed 
  than 
  it 
  is 
  

   in 
  the 
  <J. 
  Abdomen 
  : 
  Pleurites 
  with 
  the 
  free 
  internal 
  ends 
  truncate 
  ; 
  terminal 
  

   segment 
  narrowest, 
  rounded 
  behind, 
  but 
  not 
  convex 
  as 
  in 
  the 
  (J. 
  Genital 
  opening 
  

   on 
  the 
  lower 
  side 
  of 
  the 
  segment, 
  situated 
  far 
  forward 
  and 
  in 
  the 
  form 
  of 
  a 
  semi- 
  

   circle 
  with 
  its 
  concavity 
  behind. 
  The 
  actual 
  slit 
  is 
  directed 
  backwards 
  and 
  lies 
  

  

  