﻿[43] 
  DECAPODA 
  FROM 
  ALBATROSS 
  DREDGINGS. 
  647 
  

  

  The 
  chelipeds 
  are 
  not 
  very 
  much 
  longer 
  than 
  the 
  carapax, 
  including 
  

   the 
  rostrum, 
  and 
  very 
  stout; 
  the 
  merus 
  is 
  considerably 
  shorter 
  than 
  

   the 
  chela 
  and 
  armed 
  with 
  a 
  few 
  sharp 
  spines 
  aloug 
  the 
  dorsal 
  edge 
  and 
  

   .at 
  the 
  distal 
  end, 
  and 
  with 
  numerous 
  small 
  tubercles; 
  the 
  carpus 
  is 
  

   armed 
  somewhat 
  like 
  the 
  merus, 
  but 
  there 
  are 
  more 
  and 
  smaller 
  spines 
  

   at 
  the 
  distal 
  end; 
  the 
  chela 
  is 
  about 
  as 
  long 
  as 
  the 
  breadth 
  of 
  the 
  car- 
  

   apax 
  between 
  the 
  hepatic 
  spines, 
  more 
  than 
  a 
  third 
  as 
  broad 
  as 
  long, 
  

   considerably 
  compressed 
  vertically, 
  somewhat 
  roughened 
  with 
  small 
  

   tubercles, 
  especially 
  along 
  the 
  inner 
  edge, 
  and 
  with 
  the 
  stout 
  and 
  

   straight 
  digits 
  making 
  more 
  than 
  half 
  the 
  whole 
  length. 
  The 
  three 
  

   pairs 
  of 
  ambulatory 
  peraeopods 
  are 
  very 
  nearly 
  alike 
  and 
  a 
  little 
  longer 
  

   than 
  the 
  chelipeds 
  ; 
  the 
  meri 
  and 
  carpi 
  are 
  roughened 
  with 
  small 
  tu- 
  

   bercles, 
  angulated, 
  and 
  armed 
  with 
  a 
  series 
  of 
  spines 
  above; 
  the 
  pro- 
  

   podi 
  are 
  angulated, 
  with 
  all 
  the 
  angles 
  rough 
  and 
  tuberculous 
  and 
  the 
  

   dorsal 
  spiny 
  ; 
  the 
  dactyli 
  are 
  very 
  stout, 
  very 
  slightly 
  tapered 
  except 
  

   near 
  the 
  curved, 
  acute, 
  and 
  chitinous 
  tip, 
  and 
  armed 
  along 
  the 
  lower 
  

   edge 
  with 
  a 
  series 
  of 
  stout 
  spiniform 
  teeth 
  which 
  rapidly 
  decrease 
  in 
  

   size 
  and 
  become 
  obsolete 
  proximally. 
  The 
  posterior 
  peraeopods 
  are 
  

   very 
  nearly 
  as 
  in 
  the 
  allied 
  species. 
  

  

  The 
  pleon 
  is 
  about 
  as 
  broad 
  as 
  the 
  carapax, 
  only 
  slightly 
  narrowed 
  

   posteriorly, 
  and 
  the 
  dorsum 
  is 
  transversely 
  rounded 
  and 
  devoid 
  of 
  lon- 
  

   gitudinal 
  carinas, 
  teeth, 
  or 
  spines. 
  The 
  second 
  and 
  third 
  somites 
  each 
  

   have 
  two 
  slightly 
  roughened 
  transverse 
  ridges 
  upon 
  the 
  dorsum 
  sepa- 
  

   rated 
  by 
  a 
  smooth 
  sulcus, 
  but 
  the 
  dorsa 
  of 
  the 
  succeeding 
  somites 
  are 
  

   nearly 
  smooth. 
  The 
  posterior 
  margin 
  of 
  the 
  sixth 
  somite 
  projects 
  in 
  a 
  

   prominent 
  median 
  lobe, 
  with 
  a 
  smaller 
  and 
  much 
  less 
  prominent 
  lobe 
  

   either 
  side. 
  The 
  exposed 
  parts 
  of 
  all 
  the 
  pleura 
  are 
  sparsely 
  tubercu- 
  

   lous 
  and 
  their 
  lower 
  edges 
  obtuse. 
  The 
  second 
  pleuron 
  is 
  broader 
  than 
  

   the 
  others 
  and 
  its 
  anterior 
  edge 
  upturned, 
  leaving 
  a 
  broad 
  depression 
  

   between 
  it 
  and 
  the 
  prolongation 
  of 
  the 
  transverse 
  carina 
  of 
  the 
  dorsum, 
  

   which 
  makes 
  a 
  median 
  ridge. 
  

  

  The 
  telson, 
  uropods, 
  and 
  pleopods 
  are 
  very 
  nearly 
  as 
  in 
  M. 
  Bairdii 
  

   ane 
  M. 
  rostrata. 
  

  

  The 
  eggs 
  in 
  the 
  recently 
  preserved 
  alcoholic 
  specimen 
  measure 
  3.4 
  by 
  

   3.6 
  mm 
  in 
  less 
  and 
  greater 
  diameter. 
  

  

  Measurements 
  are 
  given 
  farther 
  on 
  with 
  those 
  of 
  the 
  next 
  species. 
  

  

  Munidopsis 
  similis 
  Smith. 
  

  

  Proc. 
  National 
  Mns., 
  vii, 
  p. 
  496, 
  1885. 
  

  

  (Plate 
  V, 
  Figs. 
  1-le; 
  Plate 
  VI, 
  Figs. 
  2, 
  2a.) 
  

  

  Station 
  2192, 
  August 
  5, 
  1884, 
  north 
  lat. 
  39° 
  46' 
  30", 
  west 
  long. 
  70© 
  

   14' 
  45", 
  1,060 
  fathoms, 
  globigerina 
  ooze, 
  temperature, 
  38.0°; 
  one 
  fe- 
  

   male 
  (8255). 
  

  

  This 
  species, 
  represented 
  by 
  a 
  single 
  egg-bearing 
  female, 
  is 
  very 
  

   elosely 
  allied 
  to 
  M. 
  crassa, 
  and 
  will 
  possibly 
  prove 
  to 
  be 
  a 
  variety 
  of 
  it. 
  

   The 
  single 
  specimen 
  is 
  very 
  much 
  smaller 
  than 
  those 
  of 
  M. 
  crassa, 
  but 
  

  

  