﻿[11] 
  ANNELIDA 
  CH^ETOPODA. 
  717 
  

  

  The 
  ventral 
  sette 
  (fig. 
  118) 
  are 
  a 
  little 
  longer 
  than 
  the 
  dorsal 
  setre, 
  

   compound, 
  terminal 
  article 
  very 
  delicate 
  ; 
  they 
  are 
  arranged 
  in 
  a 
  fan 
  

   pointing 
  outward 
  and 
  a 
  little 
  downward. 
  

  

  The 
  body 
  is 
  widest 
  in 
  the 
  middle, 
  very 
  slightly 
  convex 
  above, 
  flat- 
  

   tened 
  below, 
  its 
  form 
  closely 
  resembling 
  Aplirodita 
  aculeata. 
  

  

  The 
  anal 
  segment 
  is 
  small 
  and 
  prolonged 
  into 
  a 
  conical 
  cirrus-like 
  

   structure. 
  

  

  Number 
  of 
  setigerous 
  segments, 
  13. 
  

  

  Length, 
  1.5'"'". 
  

  

  Width, 
  0.5 
  m 
  '". 
  

  

  Sandy 
  bottom; 
  6-12 
  fathoms. 
  Eare. 
  

  

  SYLLIDiE. 
  

  

  SYLLIS 
  Savigny. 
  

   Syllis 
  pallida 
  Verrill. 
  

  

  Verrill. 
  American 
  Journal 
  of 
  Science 
  and 
  Arts, 
  vol. 
  x, 
  p. 
  39, 
  pi. 
  iii, 
  fig. 
  0, 
  1875. 
  

  

  Professor 
  Verrill 
  gives 
  as 
  the 
  length 
  of 
  this 
  species 
  15 
  mm 
  ; 
  some 
  of 
  our 
  

   specimens 
  had 
  a 
  length 
  45 
  m 
  "'. 
  The 
  ventral 
  cirri 
  are 
  longer 
  than 
  the 
  

   feet 
  ; 
  on 
  the 
  posterior 
  segments 
  twice 
  as 
  long. 
  Anal 
  cirri 
  three, 
  the 
  

   lateral 
  longer 
  than 
  any 
  other 
  of 
  the 
  appendages 
  j 
  median 
  a 
  short 
  style. 
  

  

  Low 
  water, 
  mud 
  and 
  sand 
  ; 
  on 
  shells 
  and 
  stones 
  to 
  thirty 
  fathoms, 
  

   sand. 
  Common. 
  

  

  SYLLIDES 
  (Ersted. 
  

  

  Syllides 
  Convoluta 
  Webster 
  & 
  Benedict, 
  

  

  Weisster 
  »fc 
  Benedict. 
  Anuel. 
  Chaet. 
  from 
  Provincetowu 
  and 
  Wcllllect, 
  Mass. 
  U.S. 
  

   F. 
  C. 
  Report 
  for 
  1881, 
  p. 
  709, 
  pi. 
  ii, 
  figs. 
  12-10. 
  1884. 
  

  

  The 
  Eastport 
  specimens 
  arc 
  much 
  larger 
  than 
  those 
  found 
  at 
  Prov- 
  

   iucetown, 
  but 
  otherwise 
  agree 
  with 
  them 
  perfectly. 
  

   Length, 
  5-7""". 
  

   Width, 
  with 
  feet, 
  0.5-1""". 
  

   Sand; 
  low 
  water. 
  Not 
  uncommon. 
  

  

  Syllides 
  longocirrata 
  (Ersted. 
  

  

  Syllides 
  longocirrata 
  (Ersted. 
  Kroner's 
  Tidskrift 
  (teste 
  Langerliaus). 
  1845. 
  

   Anopllo8yli8 
  fulva 
  Marion 
  and 
  Brobretzky. 
  Anuales 
  ties 
  Sciences 
  Natur., 
  s6r. 
  vi, 
  

  

  vol. 
  ii, 
  p. 
  28, 
  pi. 
  ii, 
  fig. 
  8, 
  pi. 
  iii, 
  fig. 
  8. 
  1875. 
  

   Syllis 
  ochracea 
  Marenzellei:. 
  Zur 
  Kcuntniss 
  tier 
  Adriatischen 
  Anneleden, 
  p. 
  27, 
  pi. 
  

  

  iii, 
  fig. 
  1. 
  1875. 
  

   Syllides 
  longocirrata 
  Langeriiaus. 
  Zeitsclirift 
  fur 
  wissens. 
  Zoologie, 
  p. 
  548. 
  1879. 
  

  

  This 
  foim 
  was 
  met 
  with 
  more 
  frequently 
  than 
  the 
  last, 
  though 
  neither 
  

   was 
  common 
  ; 
  yet 
  in 
  certain 
  localities 
  they 
  could 
  always 
  be 
  found. 
  

   The 
  cirri 
  and 
  antenna? 
  fall 
  off 
  very 
  readil 
  y. 
  

   We 
  found 
  small 
  rejecting 
  papillre 
  on 
  the 
  lower 
  surface 
  of 
  the 
  palpi, 
  

  

  