﻿[19] 
  ANNELIDA 
  CH^TOPODA. 
  725 
  

  

  LUMBKINEREIS 
  (Blv.) 
  Elders. 
  

  

  LUMBRINEREIS 
  FRAGILIS 
  Atld. 
  & 
  M. 
  Ed. 
  

  

  Audouix 
  and 
  M. 
  Edwards. 
  Anuelides. 
  Littoral 
  de 
  la 
  Fiance, 
  p. 
  170. 
  1834. 
  

   Malmgren. 
  Aunulata 
  Polychseta, 
  p. 
  177, 
  pi. 
  xv, 
  fig. 
  8:5. 
  1867. 
  

  

  Common. 
  Stations 
  not 
  noted. 
  

  

  LUMBRINEREIS 
  IIEBES 
  Vcrrill. 
  

  

  Lumbrinereis 
  ohtusa 
  Verrill. 
  Proceedings 
  A. 
  A. 
  A. 
  S., 
  p. 
  383. 
  1874. 
  

   Lumbrinereis 
  hebes 
  Verriix. 
  Proceedings 
  IT. 
  S. 
  National 
  Museum, 
  p. 
  174. 
  1879. 
  

  

  Only 
  two 
  specimens 
  were 
  taken. 
  

  

  Sand, 
  low 
  water. 
  

  

  Lumbrinereis 
  acicularum 
  n. 
  sp. 
  

  

  (Pl. 
  IV, 
  Figs. 
  55-59.) 
  

  

  Head 
  and 
  body 
  of 
  the 
  usual 
  form. 
  

  

  Anterior 
  feet 
  (fig. 
  57) 
  stout, 
  short; 
  posterior 
  lip 
  a 
  trifle 
  longer 
  than 
  

   1 
  he 
  anterior 
  ; 
  further 
  back 
  the 
  feet 
  are 
  longer, 
  and 
  the 
  posterior 
  lip 
  elon- 
  

   gated 
  more 
  than 
  the 
  anterior 
  (fig. 
  58), 
  the 
  disparity 
  in 
  length 
  becom- 
  

   ing 
  still 
  better 
  marked 
  on 
  the 
  posterior 
  third 
  ; 
  on 
  the 
  extreme 
  posterior 
  

   segments 
  the 
  feet 
  are 
  obsolete; 
  in 
  each 
  foot 
  from 
  two 
  to 
  five 
  stout 
  

   aciculse. 
  

  

  The 
  seta' 
  form 
  two 
  bundles, 
  dorsal 
  and 
  ventral 
  ; 
  to 
  about 
  the 
  fortieth 
  

   segment 
  the 
  seta3 
  are 
  all 
  capillary, 
  those 
  of 
  the 
  dorsal 
  bundle 
  longest. 
  

  

  After 
  the 
  fortieth 
  segment 
  uncinate 
  seta3 
  appear, 
  gradually 
  displac- 
  

   ing 
  the 
  others 
  ; 
  at 
  the 
  seventieth 
  segment 
  only 
  two 
  or 
  three 
  capillary 
  

   seta? 
  remain 
  in 
  the 
  dorsal 
  bundle, 
  none 
  in 
  the 
  ventral 
  ; 
  on 
  the 
  posterior 
  

   third 
  or 
  fourth 
  there 
  are 
  only 
  uncinate 
  setae. 
  

  

  Anal 
  cirri 
  (fig. 
  59) 
  stout, 
  rather 
  long. 
  

  

  Length, 
  250 
  ,um 
  . 
  

  

  Diameter, 
  G 
  '". 
  

  

  Sand, 
  low 
  water. 
  Eastport, 
  Provincetown, 
  Mass., 
  and 
  Block 
  Island, 
  

   K.I. 
  

  

  This 
  species 
  has 
  much 
  the 
  appearance 
  of 
  Arabella 
  opalina 
  Verrill. 
  

  

  DEILONEREIS 
  Claparede. 
  

  

  Drilonereis 
  magna 
  11. 
  Sp. 
  

  

  (Pl. 
  IV, 
  Figs. 
  GO-63.) 
  

  

  The 
  feet 
  throughout 
  are 
  short 
  and 
  stout, 
  somewhat 
  longer 
  behind 
  

   than 
  in 
  front, 
  the 
  increase 
  in 
  length 
  being 
  due 
  mainly 
  to 
  the 
  elongation 
  

   of 
  the 
  posterior 
  lip. 
  

  

  