﻿678 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FlStf 
  AND 
  FISHERIES. 
  [74] 
  

  

  Length 
  of 
  inner 
  lamella 
  of 
  uropod 
  6.9 
  

  

  Breadth 
  of 
  inner 
  lamella 
  of 
  uropod 
  1.5 
  

  

  Length 
  of 
  outer 
  lamella 
  of 
  uropod 
  8.0 
  

  

  Breadth 
  of 
  outer 
  lamella 
  of 
  uropod 
  1.9 
  

  

  Station 
  2099, 
  October 
  2, 
  1883, 
  north 
  lat. 
  37° 
  12' 
  20", 
  west 
  long. 
  69° 
  

   39', 
  2,949 
  fathoms, 
  globigerina 
  ooze; 
  one 
  male 
  (5434). 
  

  

  Hymenodora 
  glacialis 
  G-. 
  O. 
  Sars. 
  

  

  Pasiphae 
  glacialis 
  Buchholz, 
  Zweite 
  deutsche 
  Nordpolfahrt, 
  ii, 
  p. 
  279, 
  pi. 
  1, 
  

  

  fig. 
  2, 
  1874. 
  

   Hymenodora 
  glacialis 
  G. 
  O. 
  Sars, 
  Archiv 
  Mathem. 
  Naturvid., 
  Kristiania, 
  ii, 
  p. 
  

  

  341, 
  1877; 
  Norwegian 
  North-Atlantic 
  Expedition, 
  Crust., 
  i, 
  pp. 
  37, 
  275, 
  pi. 
  

  

  4, 
  1885. 
  Norman, 
  Proc. 
  Royal 
  Soc. 
  Edinburgh, 
  1881-'82, 
  684, 
  1882. 
  Smith, 
  

  

  Proc. 
  National 
  Mus., 
  vii, 
  p. 
  501, 
  1885. 
  

  

  (Plate 
  XV, 
  Figs. 
  3, 
  10 
  ; 
  Plate 
  XVI, 
  Fig. 
  5.) 
  

   Specimens 
  examined. 
  

  

  In 
  a 
  paper 
  in 
  the 
  Proceedings 
  of 
  the 
  Rational 
  Museum, 
  above 
  referred 
  

   to, 
  I 
  have 
  given 
  a 
  considerable 
  list 
  of 
  fragmentary 
  and 
  imperfect 
  speci- 
  

   mens 
  as 
  belonging 
  to 
  this 
  species, 
  of 
  which 
  I 
  had 
  authentically 
  labeled 
  

   specimens 
  from 
  the 
  Faroe 
  Channel, 
  received 
  from 
  the 
  Eev. 
  A. 
  M. 
  Nor- 
  

   man 
  ; 
  but 
  a 
  more 
  critical 
  examination 
  of 
  all 
  the 
  specimens 
  from 
  the 
  Al- 
  

   batross 
  collections 
  shows 
  that 
  a 
  considerable 
  number 
  of 
  them 
  are 
  spe- 
  

   cifically 
  distinct. 
  An 
  approximately 
  perfect 
  female, 
  from 
  station 
  2099, 
  

   of 
  which 
  the 
  oral 
  appendages, 
  branchiae, 
  &c, 
  were 
  carefully 
  examined 
  

   for 
  comparison 
  with 
  the 
  Faroe 
  Channel 
  specimens 
  when 
  writing 
  the 
  

   previous 
  notice, 
  and 
  several 
  fragmentary 
  specimens 
  from 
  the 
  same 
  sta- 
  

   tion 
  and 
  from 
  station 
  2039, 
  are 
  apparently 
  specifically 
  identical 
  with 
  

   the 
  arctic 
  specimens 
  in 
  every 
  particular 
  ; 
  but 
  all 
  the 
  other 
  specimens, 
  

   which 
  I 
  had 
  taken 
  for 
  young 
  individuals 
  of 
  the 
  same 
  species, 
  while 
  dif- 
  

   fering 
  only 
  slightly 
  in 
  external 
  characters, 
  have 
  distinct 
  podobranchire 
  

   at 
  the 
  bases 
  of 
  the 
  first 
  gnathopods, 
  though 
  in 
  some 
  of 
  the 
  smaller 
  

   specimens 
  these 
  branchia} 
  are 
  very 
  small 
  or 
  even 
  rudimentary. 
  These 
  

   specimens 
  are 
  described 
  further 
  on 
  as 
  a 
  new 
  species, 
  H. 
  gracilis. 
  

  

  The 
  arctic 
  specimens 
  and 
  those 
  taken 
  by 
  the 
  Albatross 
  enable 
  me 
  to 
  

   compare 
  the 
  genus 
  with 
  the 
  closely 
  allied 
  forms, 
  and 
  particularly 
  with 
  

   my 
  genus 
  Meningodora. 
  

  

  