﻿71 
  tf 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  EISH 
  AND 
  FISHERIES. 
  [10] 
  

  

  The 
  dorsal 
  setae 
  are 
  simple, 
  straight, 
  as 
  long 
  as 
  the 
  stem 
  of 
  the 
  ven- 
  

   tral 
  setae, 
  or 
  even 
  a 
  little 
  longer. 
  The 
  ventral 
  setae 
  are 
  quite 
  long, 
  

   numerous 
  (figs. 
  22, 
  23), 
  stem 
  inuch 
  longer 
  than 
  the 
  appendix. 
  

  

  The 
  proboscis 
  when 
  fully 
  extended 
  shows 
  a 
  circle 
  of 
  rather 
  long, 
  

   slender, 
  acute 
  papillae, 
  a 
  little 
  behind 
  the 
  anterior 
  end. 
  

  

  Some 
  specimens 
  were 
  without 
  color, 
  except 
  that 
  back 
  of 
  the 
  eighth 
  

   segment 
  they 
  had 
  a 
  yellowish 
  tint 
  due 
  to 
  the 
  internal 
  organs 
  ; 
  others 
  had 
  

   the 
  anterior 
  segments 
  crossed 
  by 
  a 
  narrow 
  band 
  of 
  light 
  yellowish 
  

   brown, 
  with 
  a 
  patch 
  of 
  the 
  same 
  color 
  at 
  the 
  base 
  of 
  each 
  foot. 
  

  

  Length, 
  4-0""". 
  

  

  Width, 
  0. 
  5-l 
  mm 
  . 
  

  

  Low 
  water, 
  rocks 
  ; 
  25-30 
  fathoms, 
  shells. 
  

  

  Taphus, 
  n. 
  (j. 
  

  

  Hesiouida; 
  with 
  three 
  antenna;, 
  two 
  palpi, 
  no 
  tentacular 
  cirri. 
  Dorsal 
  

   seta; 
  simple; 
  ventral 
  setae 
  compound. 
  Two 
  maxillary 
  pieces 
  in 
  the 
  

   fotm 
  of 
  stylets. 
  

  

  Taphtjs 
  hebes, 
  n. 
  sp. 
  

  

  (Ph. 
  VIII, 
  Figs. 
  113-118.) 
  

  

  The 
  width 
  of 
  the 
  head 
  (fig. 
  113) 
  is 
  nearly 
  double 
  its 
  length; 
  anterior 
  

   margin 
  slightly 
  convex 
  ; 
  anterior 
  angles 
  bluntly 
  rounded 
  ; 
  posterior 
  

   margin 
  straight. 
  

  

  Eyes 
  minute, 
  anterior, 
  just 
  back 
  of 
  the 
  origin 
  of 
  the 
  lateral 
  antennae, 
  

   not 
  visible 
  in 
  alcoholic 
  sneeimeus. 
  

  

  The 
  antennae 
  arc 
  stout, 
  elliptical 
  ; 
  the 
  median, 
  arising 
  from 
  the 
  ante- 
  

   rior 
  margin 
  of 
  the 
  head, 
  is 
  as 
  long 
  as 
  the 
  head 
  ; 
  the 
  lateral, 
  arising 
  from 
  

   the 
  lower 
  surface, 
  but 
  very 
  close 
  to 
  the 
  anterior 
  margin 
  of 
  the 
  head, 
  

   are 
  a 
  trifle 
  shorter 
  than 
  the 
  median. 
  The 
  palpi 
  (fig. 
  114) 
  are 
  placed 
  

   near 
  the 
  posterior 
  margin 
  of 
  the 
  head; 
  they 
  are 
  short, 
  stout, 
  nearly 
  

   spherical, 
  sometimes 
  in 
  contact, 
  sometimes 
  remote 
  from 
  each 
  other. 
  

   Just 
  back 
  of 
  the 
  palpi, 
  on 
  the 
  anterior 
  margin 
  of 
  the 
  first 
  segment, 
  is 
  a 
  

   pair 
  of 
  conical 
  cirri 
  ; 
  their 
  function 
  or 
  homology 
  we 
  do 
  not 
  understand. 
  

  

  The 
  first 
  segment 
  encroaches 
  on 
  the 
  sides 
  of 
  the 
  head, 
  but 
  otherwise 
  

   is 
  not 
  visible 
  dorsally 
  ; 
  it 
  bears 
  seta; 
  only. 
  

  

  The 
  dorsal 
  seta; 
  (figs. 
  113-117) 
  arise 
  directly 
  from 
  the 
  dorsal 
  surface, 
  

   near 
  the 
  lateral 
  margin 
  ; 
  they 
  are 
  numerous, 
  stout, 
  long 
  (fig. 
  117), 
  and 
  

   with 
  a 
  few 
  stout 
  spines 
  or 
  teeth, 
  remote 
  from 
  eacli 
  other 
  along 
  one 
  mar- 
  

   gin 
  of 
  their 
  outer 
  half; 
  they 
  stand 
  erect, 
  much 
  crowded 
  at 
  origin, 
  but 
  

   diverging 
  at 
  summit, 
  owing 
  to 
  their 
  curved 
  form. 
  Below 
  (outside) 
  this 
  

   bundle 
  of 
  setae 
  is 
  a 
  cirrus 
  nearly 
  as 
  long 
  as 
  the 
  setae 
  themselves, 
  stout, 
  

   swollen 
  basal 
  article; 
  these 
  cirri 
  grow 
  progressively 
  longer, 
  those 
  on 
  the 
  

   last 
  setigerous 
  segment 
  being 
  a 
  third 
  longer 
  than 
  those 
  on 
  the 
  anterior 
  

   segments. 
  

  

  The 
  ventral 
  ramus 
  (fig. 
  110) 
  is 
  stout, 
  somewhat 
  compressed 
  ; 
  near 
  its 
  

   base 
  arises 
  a 
  conical 
  or 
  somewhat 
  fusiform 
  ventral 
  cirrus, 
  which 
  pro- 
  

   jects 
  slightly 
  beyond 
  the 
  ramus. 
  

  

  