﻿30MK 
  NKW 
  SPEOIES 
  OP 
  THE 
  GENUS 
  PHREODRILUS. 
  271 
  

  

  On 
  some 
  New 
  Species 
  of 
  the 
  Genus 
  

   Phreodrilus. 
  

  

  By 
  

  

  W. 
  Blaxland 
  Benliani, 
  D.!!>c.(L.oiid.)f 
  ]TI.A.(Oxoii.), 
  F.Z.!^. 
  

  

  (Prolessor 
  of 
  Biology 
  in 
  tlie 
  University 
  of 
  Otago, 
  New 
  Zealand.) 
  

  

  With 
  Plates 
  13—15. 
  

  

  Amongst 
  the 
  Oligocli^eta 
  obtained 
  by 
  Messrs. 
  Lucas 
  and 
  

   Hodgson 
  in 
  their 
  recent 
  biological 
  survey 
  of 
  the 
  New 
  

   Zealand 
  lakes, 
  which 
  they 
  were 
  generous 
  enough 
  to 
  hand 
  

   over 
  to 
  me 
  for 
  identification,! 
  I 
  find 
  two 
  new 
  species 
  of 
  

   Phreodrilus 
  ; 
  and 
  a 
  third 
  species 
  I 
  owe 
  to 
  the 
  kindness 
  of 
  

   my 
  friend, 
  Mr. 
  Smith, 
  of 
  Ashburton, 
  from 
  whom 
  Mr. 
  Beddard 
  

   received 
  the 
  type 
  species 
  of 
  the 
  genus. 
  

  

  The 
  characters 
  of 
  the 
  genus, 
  founded 
  by 
  Beddard 
  in 
  1891, 
  

   for 
  this 
  New 
  Zealand 
  worm, 
  and 
  hitherto 
  represented 
  there 
  

   by 
  the 
  single 
  species 
  P. 
  subterraneiis, 
  have 
  recently 
  

   received 
  an 
  extended 
  interpretation 
  by 
  Dr. 
  Michaelsen 
  (5), 
  

   so 
  as 
  to 
  include 
  the 
  four 
  species 
  of 
  South 
  American 
  woi'ms 
  

   originally 
  placed 
  by 
  Beddard 
  (3) 
  in 
  a 
  distinct 
  genus, 
  

   Hesperodrilus 
  ; 
  this 
  enlargement 
  of 
  the 
  genus 
  has 
  been 
  

   rendered 
  necessary 
  by 
  the 
  discovery 
  of 
  a 
  fresh- 
  water 
  "worm 
  

   in 
  Kerguelen 
  which 
  in 
  certain 
  respects 
  bridges 
  over 
  the 
  

   anatomical 
  gap 
  between 
  the 
  two 
  genera 
  as 
  formulated 
  by 
  

   Beddard, 
  just 
  as 
  it 
  serves 
  as 
  a 
  stepping-stone 
  in 
  the 
  geo- 
  

   graphical 
  distribution 
  of 
  the 
  genus 
  as 
  now 
  extended. 
  

  

  It 
  is 
  true 
  that 
  in 
  the 
  type 
  species, 
  as 
  well 
  as 
  in 
  a 
  second 
  

   species 
  here 
  to 
  be 
  described, 
  there 
  is 
  a 
  peculiarity 
  about 
  the 
  

   ' 
  An 
  account 
  of 
  tliis 
  collection 
  will 
  be 
  found 
  in 
  P. 
  Z. 
  S., 
  1903. 
  

  

  