﻿648 
  EEPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  [44] 
  

  

  is 
  evidently 
  fully 
  adult 
  if 
  not 
  grown 
  to 
  the 
  full 
  size 
  to 
  which 
  the 
  species 
  

   attains. 
  

  

  Female. 
  — 
  The 
  form 
  and 
  proportions 
  of 
  the 
  carapax 
  are 
  almost 
  exactly 
  

   as 
  in 
  the 
  last 
  species, 
  but 
  all 
  the 
  marginal 
  spines 
  are 
  more 
  slender 
  and 
  

   the 
  only 
  spines 
  on 
  the 
  dorsal 
  surface 
  proper 
  are 
  a 
  single 
  pair 
  on 
  the 
  

   anterior 
  part 
  of 
  the 
  gastric 
  region 
  ; 
  the 
  rest 
  of 
  the 
  anterior 
  part 
  of 
  the 
  

   carapax 
  being 
  only 
  slightly 
  roughened 
  with 
  minute 
  transverse 
  broken 
  

   rugae, 
  while 
  the 
  posterior 
  portions 
  are 
  armed 
  very 
  nearly 
  as 
  in 
  crassa, 
  

   though 
  the 
  carina 
  of 
  the 
  posterior 
  margin 
  is 
  proportionally 
  wider 
  and 
  

   not 
  distinctly 
  double 
  nor 
  sharply 
  crenulated. 
  

  

  The 
  eyes, 
  antennulae, 
  and 
  antennas 
  are 
  almost 
  exactly 
  as 
  in 
  the 
  last 
  

   species, 
  and 
  so 
  are 
  the 
  oral 
  appendages, 
  except 
  the 
  merus 
  of 
  the 
  second 
  

   gnathopod, 
  which 
  is 
  armed 
  with 
  a 
  few 
  scarcely 
  spiniform 
  tubercles 
  in 
  

   place 
  of 
  conical 
  spines. 
  

  

  The 
  right 
  cheliped 
  is 
  considerably 
  smaller 
  than 
  the 
  left, 
  and 
  is 
  appar- 
  

   ently 
  a 
  reproduced 
  appendage. 
  The 
  left 
  is 
  considerably 
  more 
  slender 
  

   and 
  much 
  longer 
  than 
  in 
  crassa, 
  being 
  fully 
  once 
  and 
  two-thirds 
  as 
  

   long 
  as 
  the 
  carapax, 
  including 
  the 
  rostrum; 
  the 
  merus 
  is 
  armed 
  along 
  

   all 
  the 
  angles, 
  except 
  the 
  outer 
  or 
  posterior, 
  as 
  well 
  as 
  at 
  the 
  distal 
  

   end, 
  with 
  long 
  spines 
  ; 
  the 
  carpus 
  is 
  armed 
  dorsally 
  with 
  three 
  spines 
  

   at 
  the 
  distal 
  end, 
  and 
  with 
  one 
  or 
  two 
  on 
  the 
  inner 
  edge; 
  the 
  chela 
  is 
  

   much 
  longer 
  than 
  the 
  greatest 
  breadth 
  of 
  the 
  carapax, 
  a 
  third 
  as 
  broad 
  

   as 
  long, 
  armed 
  along 
  the 
  inner 
  edge 
  with 
  two 
  or 
  three 
  spines, 
  and 
  has 
  

   the 
  digits 
  about 
  half 
  the 
  whole 
  length. 
  The 
  ambulatory 
  peraeopods 
  are 
  

   nearly 
  alike 
  and 
  a 
  little 
  longer 
  than 
  in 
  crassa 
  ; 
  the 
  meri 
  and 
  carpi 
  are 
  

   armed 
  nearly 
  as 
  in 
  that 
  species, 
  but 
  the 
  propodi 
  each 
  have 
  only 
  a 
  single 
  

   spine 
  on 
  the 
  dorsal 
  edge. 
  

  

  The 
  whole 
  dorsal 
  surface 
  of 
  the 
  pleon 
  is 
  nearly 
  smooth, 
  though 
  there 
  

   is 
  a 
  shallow 
  transverse 
  sulcus 
  on 
  the 
  second 
  and 
  third 
  somites. 
  The 
  

   middle 
  of 
  the 
  posterior 
  margin 
  of 
  the 
  sixth 
  somite 
  is 
  truncated 
  and 
  less 
  

   prominent 
  than 
  the 
  small 
  lobe 
  on 
  either 
  side. 
  

  

  The 
  eggs 
  are 
  apparently 
  considerably 
  smaller 
  than 
  in 
  crassa, 
  meas- 
  

   uring 
  2.7 
  by 
  2.9 
  mm 
  in 
  the 
  recently 
  preserved 
  alcoholic 
  specimen, 
  which 
  

   was 
  carrying 
  only 
  24 
  eggs, 
  the 
  bulk 
  of 
  which 
  was 
  equal 
  to 
  between 
  an 
  

   eighth 
  and 
  a 
  ninth 
  of 
  the 
  bulk 
  of 
  the 
  entire 
  animal 
  excluding 
  the 
  eggs. 
  

  

  Measurements 
  in 
  millimeters. 
  

  

  Catalogue 
  number. 
  

   Station 
  

  

  Sex 
  

  

  Length 
  from 
  tip 
  of 
  rostrum 
  to 
  tip 
  of 
  telson 
  

  

  Length 
  of 
  carapax, 
  including 
  rostrum 
  

  

  Length 
  of 
  rostrinn 
  

  

  Greatest 
  breadth 
  of 
  carapax, 
  including 
  spines 
  . 
  

  

  Breadth 
  of 
  bases 
  of 
  anterolateral 
  spines 
  

  

  Breadth 
  at 
  branchial 
  regions 
  

  

  Length 
  of 
  eye-stalk, 
  including 
  spine 
  

  

  