﻿[15] 
  ANNELIDA 
  CILETOPODA. 
  721 
  

  

  P^DOPHYLAX 
  GlaparMe. 
  

   P^edophylax 
  HEBES 
  Webster 
  & 
  Benedict. 
  

  

  The 
  bideutate 
  simple 
  seta? 
  described 
  for 
  this 
  species 
  were 
  not 
  so 
  well 
  

   marked 
  as 
  iu 
  the 
  Provincetown 
  specimens. 
  The 
  statement 
  that 
  the 
  

   pointed 
  simple 
  seta; 
  are 
  replaced 
  by 
  these 
  must 
  be 
  corrected 
  so 
  as 
  to 
  read 
  

   that 
  there 
  are 
  two 
  simple 
  seta^, 
  dorsal 
  and 
  ventral, 
  on 
  the 
  posterior 
  

   segments 
  ; 
  the 
  ventral 
  shorter 
  than 
  the 
  dorsal, 
  somewhat 
  curved 
  near 
  

   the 
  apex, 
  and 
  sometimes 
  bidentate. 
  

  

  In 
  front 
  of 
  the 
  stomach 
  the 
  body 
  is 
  colorless; 
  behind 
  it 
  a 
  golden 
  

   yellow. 
  

  

  Rare 
  ; 
  sand, 
  low 
  water. 
  Found 
  only 
  at 
  West 
  Quoddy. 
  

  

  PyEDOPHYLAX 
  BREVICORNIS, 
  11. 
  sp. 
  

   (Pl. 
  II, 
  Figs. 
  40, 
  41; 
  Pl. 
  Ill, 
  Figs. 
  42-45.) 
  

  

  In 
  this 
  species 
  the 
  line 
  of 
  the 
  division 
  between 
  the 
  head 
  and 
  palpi 
  

   is 
  indistinct 
  ; 
  the 
  head 
  is 
  oval 
  (fig. 
  40), 
  the 
  width 
  far 
  exceeding 
  the 
  

   length 
  ; 
  the 
  palpi 
  are 
  united, 
  but 
  have 
  a 
  well-marked 
  terminal 
  emargin- 
  

   ation 
  ; 
  there 
  are 
  four 
  or 
  sometimes 
  six 
  eyes, 
  dark 
  reddish-brown 
  ; 
  the 
  

   antenna} 
  are 
  minute, 
  equal, 
  or 
  nearly 
  so, 
  fusiform, 
  situated 
  between 
  the 
  

   posterior 
  eyes. 
  

  

  Buccal 
  segment 
  about 
  one-half 
  as 
  long 
  as 
  the 
  second 
  segment. 
  

   Tentacular 
  cirri 
  minute. 
  Dorsal 
  cirri 
  larger 
  than 
  the 
  tentacular 
  cirri, 
  

   but 
  very 
  small 
  (fig. 
  41), 
  remote 
  from 
  the 
  foot. 
  Ventral 
  cirri 
  nearly 
  as 
  

   large 
  as 
  the 
  dorsal. 
  Anal 
  cirri 
  delicate, 
  slightly 
  enlarged 
  along 
  their 
  

   middle 
  third, 
  three 
  to 
  four 
  times 
  as 
  long 
  as 
  the 
  anal 
  segment, 
  by 
  far 
  

   the 
  longest 
  appendages 
  of 
  the 
  body. 
  

  

  The 
  setae 
  are 
  most 
  numerous 
  on 
  the 
  anterior 
  segments; 
  there 
  are 
  three 
  

   kinds. 
  In 
  the 
  upper 
  part 
  of 
  each 
  bundle 
  a 
  simple 
  curved 
  seta 
  (figs. 
  44, 
  

   45); 
  on 
  the 
  posterior 
  segments 
  two 
  of 
  these 
  simple 
  seta?, 
  one 
  dorsal, 
  

   one 
  ventral 
  ; 
  also 
  in 
  the 
  upper 
  part 
  of 
  each 
  bundle 
  from 
  one 
  to 
  three 
  

   compound 
  seta? 
  with 
  quite 
  long 
  and 
  very 
  delicate 
  terminal 
  articles 
  (fig. 
  

   42); 
  seen 
  in 
  certain 
  positions 
  these 
  seta' 
  appear 
  to 
  be 
  simple, 
  with 
  sud- 
  

   denly 
  diminished 
  diameter 
  at 
  what 
  is 
  really 
  the 
  articulation; 
  in 
  the 
  

   lower 
  part 
  of 
  each 
  bundle 
  from 
  two 
  to 
  six 
  short, 
  stout 
  seta?, 
  with 
  short 
  

   terminal 
  articles 
  (fig. 
  42). 
  

  

  The 
  body 
  is 
  convex 
  above 
  and 
  below 
  (fig. 
  41) 
  ; 
  colorless; 
  stomach, 
  

   white. 
  

   The 
  pharynx 
  occupies 
  seven 
  segments 
  ; 
  the 
  stomach 
  two 
  to 
  three- 
  

   Sexual 
  seta? 
  on 
  the 
  males 
  begin 
  on 
  the 
  eighteenth 
  setigerous 
  segment 
  ; 
  

   they 
  are 
  very 
  long 
  and 
  delicate. 
  

   Length, 
  1.5-2'™ 
  . 
  

   Width, 
  0.25-0-3 
  mm 
  . 
  

   Not 
  uncommon. 
  Sand, 
  low 
  water; 
  8-30 
  fathoms, 
  sand 
  and 
  sandy 
  

  

  mud. 
  

  

  S. 
  Mis. 
  70 
  4G 
  

  

  