﻿[39] 
  ANNELIDA 
  CH^TOPODA. 
  745 
  

  

  As 
  observed 
  by 
  Claparede 
  the 
  uncini 
  exist 
  011 
  young 
  forms 
  in 
  advance 
  

   of 
  their 
  position 
  on 
  the 
  adult. 
  On 
  one 
  specimen 
  the 
  capillary 
  setre 
  

   changed 
  to 
  uncini 
  on 
  the 
  fourth 
  setigerous 
  segment. 
  

  

  Not 
  common. 
  Mud, 
  any 
  depth 
  to 
  40 
  fathoms. 
  

  

  We 
  obtained 
  sufficient 
  material 
  to 
  indicate 
  the 
  existence 
  of 
  another 
  

   species 
  of 
  Capitella 
  at 
  Eastport, 
  but 
  not 
  sufficient 
  to 
  admit 
  of 
  descrip- 
  

   tion 
  

  

  NOTOMASTUS 
  Sara. 
  

  

  NOTOMASTTJS 
  CAPILLARIS 
  Verrill 
  

  

  Avcistria 
  capillaris 
  Verrill. 
  Proc. 
  American 
  Association 
  for 
  the 
  Advancement 
  of 
  

   Science, 
  p. 
  385. 
  1874. 
  

  

  Notomastus 
  capillaris 
  Verrill. 
  Proc. 
  U. 
  S. 
  National 
  Museum, 
  p. 
  181. 
  1879. 
  

   Single 
  specimen. 
  Station 
  not 
  noted. 
  

  

  Family 
  MALDANID^E. 
  

  

  EHODINE 
  Malmgren. 
  

  

  t 
  

   Ehodine 
  Loveni 
  Malmgren. 
  

  

  Malmgren. 
  Nord. 
  Hafs-Ann.,p. 
  189. 
  1865. 
  Ann. 
  Polych., 
  p. 
  99., 
  pl.x, 
  fig. 
  61. 
  1867. 
  

  

  We 
  found 
  no 
  entire 
  specimen. 
  One 
  specimen 
  had 
  twenty-four 
  seg- 
  

   ments 
  ; 
  from 
  the 
  seventeenth 
  each 
  had 
  the 
  peculiar 
  membranous 
  mar- 
  

   gin 
  described 
  by 
  Malmgren 
  ; 
  it 
  is 
  irregularly 
  denticulated. 
  

  

  Body 
  colorless 
  to 
  brownish 
  red. 
  

  

  Sand 
  and 
  sandy 
  mud 
  ; 
  8 
  to 
  12 
  fathoms. 
  

  

  NICOMACHE 
  Malmgren. 
  

   NlCOMACHE 
  LUMBRICALIS 
  Mgrtl. 
  

  

  Sabella 
  lumbricalis 
  O. 
  Fabricius. 
  Fauna 
  Gronl, 
  p. 
  374. 
  1780. 
  

  

  Nicomache 
  lumbricalis 
  Malmgren. 
  NorcliskaHafs-Ann.,p. 
  190. 
  1865. 
  Ann. 
  Polych., 
  

   p. 
  99, 
  pi. 
  x, 
  fig. 
  60. 
  1867. 
  

  

  Only 
  one 
  specimen 
  taken. 
  Eocks 
  ; 
  20 
  fathoms. 
  

   PEAXILLELLA 
  Verrill. 
  

   Praxillella 
  zonalis 
  Verrill. 
  

  

  Praxilla 
  zonaZia 
  Verrill. 
  American 
  Journal 
  of 
  Science, 
  vol. 
  vii, 
  p. 
  505, 
  pi. 
  vi, 
  fig. 
  2. 
  

  

  1874. 
  Proc. 
  A. 
  A. 
  A. 
  S., 
  p. 
  384, 
  pi. 
  5, 
  fig. 
  4. 
  1874. 
  

   Praxillella 
  zonalis 
  Verrill. 
  Trans. 
  Connecticut 
  Acad., 
  vol. 
  iv, 
  part 
  2, 
  p. 
  298. 
  1881. 
  

  

  Our 
  specimens 
  agree 
  well 
  with 
  Professor 
  Verrill's 
  description. 
  Add, 
  

   that 
  the 
  anterior 
  margin 
  of 
  the 
  fourth 
  sitigerous 
  segment 
  is 
  thickened, 
  

   rounded, 
  forming 
  a 
  collar 
  which 
  receives 
  the 
  preceding 
  segment; 
  also, 
  

   that 
  the 
  diameter 
  falls 
  off 
  rapidly 
  to 
  the 
  fourth 
  setigerous 
  segment, 
  so 
  

  

  