﻿696 
  

  

  REPOET 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  

  

  [92] 
  

  

  posterior 
  margin 
  in 
  a 
  small 
  sharp 
  tooth. 
  The 
  sixth 
  somite 
  is 
  compressed 
  

   laterally, 
  more 
  than 
  twice 
  as 
  long 
  as 
  high, 
  and 
  armed 
  with 
  a 
  sharp 
  dor- 
  

   sal 
  carina. 
  The 
  telson 
  is 
  about 
  as 
  long 
  as 
  the 
  sixth 
  somite, 
  narrowly 
  

   triangular, 
  with 
  a 
  broad 
  and 
  shallow 
  dorsal 
  sulcus 
  except 
  near 
  the 
  base, 
  

   terminates 
  in 
  a 
  small 
  spiniform 
  point, 
  with 
  a 
  spine 
  either 
  side, 
  and 
  is 
  

   armed 
  in 
  front 
  of 
  these 
  with 
  three 
  pairs 
  of 
  lateral 
  spines. 
  The 
  uropods 
  

   and 
  pleopods 
  are 
  very 
  nearly 
  as 
  in 
  Benthcecetes 
  Bartletti, 
  except 
  that 
  the 
  

   appendage 
  (petasma) 
  of 
  the 
  first 
  pair 
  of 
  pleopods 
  in 
  the 
  male 
  is 
  long 
  and 
  

   narrow, 
  approaching 
  in 
  form 
  that 
  of 
  Benthonectes 
  filipes. 
  

  

  Measurements 
  in 
  millimeters. 
  

  

  Station 
  . 
  

  

  Sex. 
  

  

  0.6 
  

  

  Length 
  from 
  tip 
  of 
  rostrum 
  to 
  tip 
  of 
  telson 
  

  

  Length 
  of 
  carapax, 
  including 
  rostrum 
  

  

  Length 
  of 
  rostrum 
  

  

  Height 
  of 
  carap-.ec 
  

  

  Length 
  of 
  oye-stalk 
  and 
  eye 
  

  

  Greatest 
  diameter 
  of 
  eye 
  

  

  Length 
  of 
  antennal 
  scale 
  

  

  Breadth 
  of 
  antennal 
  scale 
  

  

  Length 
  of 
  first 
  per 
  asopod 
  

  

  Length 
  of 
  chela 
  

  

  Breadth 
  of 
  chela 
  

  

  Length 
  of 
  dactylus 
  

  

  Length 
  of 
  second 
  peraeopod 
  

  

  Length 
  of 
  chela 
  

  

  Breadth 
  of 
  chela 
  

  

  Length 
  of 
  dactylus 
  

  

  Length 
  of 
  third 
  peraeopod 
  

  

  Leugth 
  of 
  chela 
  '. 
  

  

  Breadth 
  of 
  chela 
  

  

  Length 
  of 
  dactylns 
  

  

  Length 
  of 
  eixtli 
  somite 
  of 
  pleon 
  

  

  1 
  [eight 
  of 
  sixth 
  somite 
  of 
  pleon 
  

  

  Length 
  of 
  telson 
  

  

  Leu 
  nth 
  of 
  inner 
  lamella 
  of 
  uropod 
  , 
  

  

  Breadth 
  of 
  inner 
  lamella 
  of 
  uropod 
  

  

  Length 
  of 
  outer 
  lamella 
  of 
  uropod 
  j 
  21.0 
  

  

  Breadth 
  of 
  outer 
  lamella 
  of 
  uropod 
  : 
  5. 
  4 
  

  

  •:i74 
  

  

  95 
  

  

  37.5 
  

   5.5 
  

  

  17.0 
  

   6.2 
  

   2.6 
  

  

  2222 
  

  

  44.0 
  

   6.6 
  

  

  15.6 
  

   7.2 
  

   16.0 
  

   15.5 
  

   3.9 
  

  

  ? 
  

   100 
  

   40.0 
  

   6.8 
  

  

  6.4 
  

   2.8 
  

  

  23.5 
  

   7.0 
  

  

  30.0 
  

   7.0 
  

   1.6 
  

   3.1 
  

  

  46.0 
  

  

  64.0 
  

   9.5 
  

   1.0 
  

   5.0 
  

  

  16.0 
  

   7.8 
  

  

  17.0 
  

  

  16.4 
  

   4.1 
  

  

  2l'. 
  5 
  

   5.8 
  

  

  SERGE 
  STIDiE. 
  

  

  Sergestes 
  arcticus 
  Kroyer. 
  

  

  (Plate 
  NX, 
  Figs. 
  1,2.) 
  

   Speci 
  men 
  s 
  exami 
  n 
  eel. 
  

  

  