﻿[25] 
  ANNELIDA 
  CH^TOPODA 
  731 
  

  

  The 
  body 
  is 
  densely 
  covered 
  with 
  elongated 
  papillae. 
  There 
  is 
  one 
  

   very 
  long 
  papilla 
  at 
  the 
  base 
  of 
  each 
  dorsal 
  fan 
  of 
  setse. 
  These 
  papilla? 
  

   may 
  be 
  conical 
  or 
  cylindrical, 
  and, 
  like 
  the 
  setae, 
  retain 
  their 
  number 
  

   and 
  length 
  on 
  the 
  posterior 
  segmeuts. 
  

  

  Body 
  green, 
  covered 
  with 
  dirt; 
  setae 
  golden-yellow, 
  gleaming. 
  

  

  Length, 
  10-15""". 
  

  

  Diameter, 
  2-3" 
  1 
  "'. 
  

  

  Number 
  of 
  segments, 
  28-32. 
  

  

  Not 
  common 
  ;■• 
  G-10 
  fathoms; 
  sand 
  and 
  sandy 
  mud. 
  

  

  SIPHGNOSTGMUM 
  Otto. 
  

  

  SlPHONOSTOMUM 
  GRTjBEI, 
  il. 
  sp. 
  

   (Pl. 
  V, 
  Figs. 
  68-71.) 
  

  

  In 
  this 
  species 
  there 
  are 
  thirty 
  rather 
  stout 
  branchiae, 
  a 
  little 
  shorter 
  

   than 
  the 
  setae 
  of 
  the 
  cephalic 
  cage; 
  the 
  tentacles 
  are 
  two-thirds 
  as 
  long 
  

   as 
  the 
  branchiae. 
  

  

  The 
  body 
  is 
  covered 
  with 
  papillae 
  of 
  two 
  kinds 
  (fig. 
  G8), 
  some 
  long, 
  

   slender, 
  cylindrical 
  to 
  near 
  the 
  end, 
  then 
  fusiform, 
  terminating 
  in 
  a 
  lit- 
  

   tle 
  swelling 
  ; 
  these 
  occur 
  for 
  the 
  most 
  part 
  on 
  the 
  feet, 
  and 
  are 
  especially 
  

   inumerous 
  on 
  the 
  segments 
  bearing 
  the 
  seta? 
  which 
  form 
  the 
  cephalic 
  

   cage, 
  but 
  they 
  are 
  also 
  found 
  on 
  the 
  body 
  both 
  above 
  and 
  below 
  ; 
  the 
  

   others 
  are 
  much 
  shorter, 
  may 
  be 
  either 
  conical 
  or 
  cylindrical, 
  and 
  exist 
  

   both 
  on 
  the 
  body 
  and 
  feet. 
  

  

  The 
  Superior 
  ramus 
  is 
  flattened, 
  bilabiate 
  (fig. 
  GS), 
  sides 
  concave 
  ; 
  its 
  

   seta? 
  pass 
  out 
  between 
  the 
  two 
  lips, 
  4-G 
  in 
  each 
  bundle, 
  about 
  as 
  long- 
  

   as 
  the 
  width 
  of 
  the 
  body, 
  remotely 
  and 
  faintly 
  striate 
  (loculate). 
  The 
  

   lower 
  ramus 
  is 
  as 
  long 
  as 
  the 
  upper, 
  slightly 
  tapering, 
  apex 
  bluntly 
  

   rounded, 
  constricted 
  near 
  the 
  outer 
  fourth. 
  In 
  each 
  lower 
  ramus 
  are 
  

   two 
  stout 
  setae, 
  compound, 
  appendix 
  a 
  strong, 
  variously-curved 
  hook 
  

   (Figs. 
  70, 
  71). 
  One 
  of 
  these 
  setae 
  is 
  as 
  long 
  as 
  the 
  dorsal 
  setae, 
  the 
  other 
  

   much 
  shorter. 
  

  

  The 
  body 
  is 
  colorless 
  and 
  transparent, 
  but 
  the 
  color 
  of 
  the 
  internal 
  

   organs 
  is 
  for 
  the 
  anterior 
  third 
  white; 
  middle 
  third, 
  red; 
  posterior 
  

   third, 
  greenish 
  white. 
  

  

  Length, 
  S-12 
  mm 
  . 
  

  

  Sandy 
  bottom, 
  G-10 
  fathoms. 
  

  

  FLABELLIGERA 
  San. 
  

  

  Flabelligera 
  apfinis 
  Sars. 
  

  

  Rars. 
  Bidrag 
  till 
  Soedyrones 
  Naturalh., 
  i, 
  p. 
  31, 
  pl. 
  3, 
  fig. 
  1G— 
  . 
  Beskr. 
  og 
  Iaktt., 
  p. 
  

   47 
  (teste 
  Malmgken). 
  

  

  Common. 
  Low 
  water 
  to 
  20 
  fathoms, 
  under 
  stones, 
  &c. 
  

  

  