﻿FIVE 
  NEW 
  SPECIES 
  OF 
  ANOPLURA 
  AND 
  MALLOPHAGA. 
  

  

  159 
  

  

  at 
  their 
  distal 
  ends 
  and 
  the 
  chitinisation 
  of 
  the 
  preputial 
  sac 
  is 
  markedly 
  asymmetri- 
  

   cal, 
  particularly 
  at 
  the 
  junction 
  with 
  the 
  basal 
  plate. 
  The 
  chitinous 
  " 
  leiste," 
  

   marked 
  " 
  X 
  " 
  in 
  Mjoberg's 
  figure 
  of 
  H. 
  phtiriopsis, 
  in 
  H. 
  taurotragi 
  curls 
  round 
  the 
  

   ends 
  of 
  the 
  parameres 
  and 
  extends 
  partly 
  up 
  the 
  other 
  side 
  of 
  the 
  preputial 
  sac. 
  

   There 
  is 
  no 
  penis. 
  

  

  Measurements 
  of 
  Haematopinus 
  

  

  taurotragi 
  in 
  millimetres. 
  

  

  

  

  

  

  3 
  

  

  

  $ 
  

  

  Head 
  

  

  Thorax 
  

  

  Abdomen. 
  . 
  

  

  Length. 
  

   •7 
  

  

  •725 
  

   2-4 
  

  

  Breadth. 
  

  

  •5 
  

  

  IS 
  

  

  1-5 
  

  

  Length. 
  

   •8 
  

  

  •7 
  

   2-8 
  

  

  Breadth. 
  

   •55 
  

   1-25 
  

   2-25 
  

  

  Total 
  

  

  3-825 
  

  

  

  43 
  

  

  

  

  

  3 
  

  

  

  '? 
  

  

  Length 
  of 
  legs 
  

   Femur 
  

  

  Tibia 
  + 
  tarsus 
  

   Claw 
  

  

  1st 
  

   •4 
  

   •6 
  

   •25 
  

  

  2nd 
  

   •4 
  

   •55 
  

   •2 
  

  

  3rd 
  

   •45 
  

  

  •75 
  

   •35 
  

  

  1st 
  

   •33 
  

   •55 
  

   •25 
  

  

  2nd 
  

   •33 
  

   •55 
  

   •3 
  

  

  3rd 
  

   •33 
  

   •55 
  

   •25 
  

  

  Total 
  

  

  1-25 
  

  

  1-15 
  

  

  1-55 
  

  

  113 
  

  

  1-18 
  

  

  1-13 
  

  

  

  3 
  

  

  ? 
  

  

  

  

  

  Length 
  of 
  Segments 
  of 
  Antenna. 
  

   1 
  

   2 
  

   3 
  

   4 
  

   5 
  

  

  •11 
  

   •11 
  

   •11 
  

   •09 
  

  

  •12 
  

  

  •09 
  

  

  •081 
  

  

  •07 
  

  

  •07 
  

  

  •09 
  

  

  

  Total 
  

  

  •54 
  

  

  •401 
  

  

  

  

  

  Linognathoides, 
  gen. 
  nov. 
  

  

  This 
  new 
  genus 
  is 
  instituted 
  to 
  include 
  specimens 
  of 
  a 
  new 
  form 
  of 
  louse 
  presented 
  

   to 
  the 
  British 
  Museum 
  by 
  the 
  Hon. 
  N. 
  Charles 
  Rothschild 
  and 
  collected 
  in 
  

   Transcaspia 
  by 
  W. 
  Koshantchikov 
  on 
  two 
  different 
  hosts, 
  viz., 
  Cricetus 
  phaeus, 
  now 
  

   known 
  as 
  Cricetulus 
  phaeus 
  (Pallas), 
  belonging 
  to 
  the 
  subfamily 
  Cricetinae, 
  family 
  

   Muridae, 
  and 
  Spermophilus 
  leptodactylus, 
  now 
  known 
  as 
  Citellus 
  leptodactylus 
  

   (Licht.), 
  belonging 
  to 
  the 
  subfamily 
  Sciurinae, 
  family 
  Sciuridae. 
  

  

  The 
  Museum 
  collection 
  contains 
  a 
  second 
  species 
  of 
  Linognathoides, 
  also 
  the 
  gift 
  

   of 
  Mr. 
  Rothschild, 
  which 
  stands 
  very 
  near 
  the 
  present 
  species 
  and 
  was 
  taken 
  on 
  

   Marmota 
  pruinosus, 
  Gmelin, 
  a 
  North 
  American 
  squirrel 
  of 
  the 
  subfamily 
  Sciurinae. 
  

  

  