﻿[5] 
  ANNELIDA 
  CILETOPODA. 
  71 
  1 
  

  

  The 
  dorsal 
  cirri 
  on 
  the 
  anterior 
  segments 
  (fig. 
  2) 
  arise 
  near 
  the 
  foot 
  

   from 
  stout 
  basal 
  articles; 
  further 
  back 
  (fig. 
  3) 
  they 
  are 
  much 
  elongated, 
  

   a 
  little 
  wider, 
  and 
  more 
  remote 
  from 
  the 
  foot. 
  This 
  form 
  and 
  position 
  

   they 
  retain 
  on 
  the 
  posterior 
  segments, 
  falling 
  off 
  a 
  little 
  in 
  size. 
  The 
  

   ventral 
  cirri 
  are 
  at 
  first 
  nearly 
  as 
  large 
  as 
  the 
  dorsal 
  and 
  much 
  like 
  

   them 
  in 
  every 
  respect. 
  They 
  retain 
  nearly 
  the 
  same 
  form 
  and 
  size 
  

   throughout. 
  

  

  The 
  setas 
  (fig. 
  4) 
  are 
  quite 
  long; 
  the 
  stem 
  terminates 
  in 
  two 
  long, 
  

   sharp, 
  curved 
  points, 
  and 
  the 
  edge 
  of 
  the 
  shorter 
  one 
  is 
  furnished 
  with 
  

   a 
  series 
  of 
  small, 
  sharp 
  teeth. 
  The 
  appendix 
  is 
  much 
  shorter 
  than 
  the 
  

   stem 
  ; 
  it 
  tapers 
  rapidly 
  from 
  a 
  wide 
  base. 
  

  

  The 
  general 
  color 
  is 
  gray 
  with 
  two 
  lateral 
  dorsal 
  brown 
  bauds, 
  and 
  

   with 
  brown 
  specks 
  at 
  the 
  base 
  of 
  the 
  feet, 
  both 
  above 
  and 
  below. 
  

  

  The 
  body 
  is 
  strongly 
  convex 
  above, 
  flat 
  or 
  slightly 
  convex 
  below; 
  

   width 
  nearly 
  uniform 
  throughout. 
  

  

  Length, 
  75 
  mm 
  to 
  100""". 
  

  

  Width, 
  about 
  l 
  mm 
  . 
  

  

  This 
  is 
  the 
  species 
  which 
  in 
  the 
  paper 
  on 
  the 
  Annelids 
  of 
  Province- 
  

   town, 
  Mass., 
  we 
  regarded 
  as 
  Eulalia 
  gracilis 
  Verrill. 
  It 
  quite 
  certain! 
  y 
  

   is 
  not 
  that 
  species. 
  For 
  notes 
  on 
  sexual 
  form 
  see 
  the 
  Provincetowu 
  

   paper. 
  

  

  Found 
  on 
  dredged 
  shells. 
  Not 
  common. 
  

  

  Eulalia 
  dubia 
  Webster 
  and 
  Benedict* 
  

   Common 
  at 
  low 
  water 
  and 
  in 
  shallow 
  dredgings, 
  on 
  stones, 
  shells, 
  &c. 
  

  

  ETEONE 
  (Sav.) 
  (Ersted. 
  

   Eteone 
  Saesi 
  (Ersted. 
  

  

  (Ersted. 
  Arm. 
  Dan. 
  Consp., 
  p. 
  29, 
  fig. 
  77. 
  1843. 
  

   Maxmgren. 
  Ann. 
  Polych., 
  p. 
  28, 
  pi. 
  ii, 
  rig. 
  14. 
  1867. 
  

  

  This 
  species, 
  judging 
  by 
  the 
  description 
  and 
  figures 
  given 
  by 
  Malm- 
  

   gren, 
  would 
  seem 
  to 
  be 
  closely 
  related 
  to 
  Eteone 
  depressa 
  Malmgren. 
  

  

  Some 
  of 
  our 
  specimens 
  seem 
  more 
  like 
  the 
  one 
  ; 
  others, 
  more 
  like 
  the 
  

   other; 
  while 
  they 
  do 
  not 
  exactly 
  agree 
  with 
  either. 
  In 
  living 
  speci- 
  

   mens 
  the 
  length 
  of 
  the 
  head 
  exceeds 
  the 
  width 
  ; 
  in 
  preserved 
  specimens 
  

   the 
  reverse 
  is 
  the 
  case. 
  The 
  form 
  of 
  the 
  dorsal 
  cirri 
  is 
  the 
  same 
  as 
  in 
  

   Eteone 
  Sarsi, 
  but 
  they 
  do 
  not 
  arise 
  so 
  near 
  the 
  foot; 
  but 
  in 
  this 
  respect 
  

   there 
  is 
  a 
  marked 
  difference 
  in 
  different 
  specimens. 
  

  

  Malmgren 
  figures 
  both 
  dorsal 
  and 
  ventral 
  cirri 
  without 
  basal 
  articles. 
  

   Our 
  specimens 
  have 
  basal 
  articles 
  with 
  both, 
  but 
  with 
  only 
  a 
  very 
  shal- 
  

   low 
  constriction, 
  which, 
  in 
  alcoholic 
  forms, 
  might 
  easily 
  escape 
  detec- 
  

  

  * 
  This 
  species 
  lias 
  been 
  described 
  and 
  figured 
  in 
  a 
  paper 
  on 
  the 
  Provincetowu 
  An- 
  

   nelids, 
  and 
  it 
  does 
  not 
  seem 
  necessary 
  to 
  repeat 
  the 
  description, 
  although 
  (lie 
  paper 
  

   is 
  not 
  published 
  at 
  the 
  time 
  of 
  this 
  writing. 
  (To 
  be 
  published 
  by 
  the 
  U. 
  S. 
  Fish 
  Com- 
  

   mission. 
  ) 
  

  

  