﻿[67] 
  DECAPODA 
  FROM 
  ALBATROSS 
  DREDGINGS. 
  671 
  

  

  and 
  eariuate 
  tooth 
  of 
  the 
  third 
  somite 
  of 
  the 
  pleon. 
  All 
  the 
  specimens 
  

   are 
  in 
  bad 
  condition, 
  very 
  largely 
  dne, 
  apparently, 
  to 
  the 
  soft 
  and 
  'mem- 
  

   branaceous 
  character 
  of 
  the 
  integument, 
  which 
  resembles 
  that 
  of 
  Mcn- 
  

   ingodora 
  mollis 
  and 
  several 
  other 
  deep-water 
  species. 
  

  

  The 
  carapax 
  proper 
  is 
  higher 
  and 
  more 
  compressed 
  at 
  the 
  base 
  of 
  

   the 
  rostrum 
  than 
  in 
  A. 
  Agassizii 
  and 
  the 
  branchiostegal 
  spines 
  are 
  less 
  

   prominent. 
  The 
  rostrum 
  is 
  approximately 
  a 
  fourth 
  as 
  long 
  as 
  the 
  rest 
  

   of 
  the 
  carapax, 
  very 
  high 
  at 
  base 
  as 
  in 
  A. 
  exiinea, 
  acutely 
  triangular 
  in 
  

   a 
  side 
  view, 
  terminates 
  in 
  a 
  slender 
  and 
  slightly 
  upturned 
  tip, 
  and 
  is 
  

   unarmed 
  below 
  but 
  armed 
  above, 
  at 
  base 
  and 
  back 
  upon 
  the 
  carina 
  of 
  

   the 
  carapax, 
  with 
  a 
  series 
  of 
  live 
  or 
  six 
  very 
  small 
  and 
  obscure 
  teeth. 
  

  

  The 
  eye-stalks 
  are 
  a 
  little 
  shorter 
  than 
  in 
  A. 
  Agassizii 
  and 
  the 
  eyes 
  a 
  

   little 
  smaller, 
  but 
  broader 
  than 
  the 
  stalks, 
  somewhat 
  compressed 
  verti- 
  

   cally, 
  face 
  obliquely 
  inward 
  and. 
  forward, 
  and 
  are 
  black 
  or 
  brownish 
  

   black. 
  The 
  peduncle 
  of 
  the 
  antenna 
  and 
  its 
  scale 
  are 
  nearly 
  like 
  those 
  

   of 
  A. 
  microphthalma. 
  

  

  The 
  oral 
  appendages 
  are 
  very 
  nearly 
  as 
  in 
  A. 
  Agassizii. 
  The 
  oppos- 
  

   ing 
  edges 
  of 
  the 
  ventral 
  processes 
  of 
  the 
  mandibles 
  are 
  a 
  little 
  narrower, 
  

   almost 
  exactly 
  alike 
  on 
  the 
  two 
  sides, 
  armed 
  with 
  about 
  seven 
  teeth 
  

   each, 
  and 
  without 
  the 
  small 
  anterior 
  teeth 
  seen 
  in 
  A. 
  Agassizii. 
  The 
  

   first 
  maxillae, 
  show 
  no 
  differences. 
  The 
  divisions 
  of 
  the 
  distal 
  segment 
  

   of 
  the 
  protoguath 
  of 
  the 
  second 
  maxilla 
  are 
  very 
  slightly 
  broader 
  than 
  

   in 
  A. 
  Agassizii, 
  the 
  endognath 
  and 
  the 
  anterior 
  lobe 
  of 
  the 
  scaphognath 
  

   are 
  both 
  considerably 
  longer 
  and 
  the 
  posterior 
  lobe 
  of 
  the 
  scaphognath 
  

   slightly 
  narrower. 
  The 
  exopod 
  of 
  the 
  maxilliped 
  does 
  not 
  reach 
  be- 
  

   yond 
  the 
  endoped 
  and 
  the 
  tip 
  is 
  broader 
  and 
  more 
  truncated 
  than 
  in 
  

   A. 
  Agassizii. 
  The 
  gnathopods 
  do 
  not 
  differ 
  essentially 
  from 
  those 
  of 
  

   A. 
  Agassizii. 
  

  

  The 
  perseopods 
  are 
  very 
  similar 
  to 
  those 
  of 
  A. 
  Agassizii, 
  but 
  are 
  all 
  

   considerably 
  longer 
  and 
  more 
  slender 
  ; 
  the 
  first 
  reach 
  to 
  the 
  middle 
  of 
  

   the 
  antennal 
  scale, 
  the 
  fourth 
  to 
  considerably 
  by 
  its 
  tip, 
  and 
  the 
  fifth 
  

   to 
  about 
  the 
  same 
  point 
  as 
  the 
  first. 
  

  

  The 
  pleon 
  is 
  smaller 
  relatively 
  to 
  the 
  cephalo-peroeon 
  than 
  in 
  A. 
  Agas- 
  

   sizii 
  and 
  the 
  third 
  somite 
  very 
  differently 
  armed. 
  The 
  first 
  and 
  second 
  

   somites 
  are 
  rounded 
  above, 
  but 
  the 
  third 
  is 
  strongly 
  compressed 
  dor- 
  

   sally 
  into 
  a 
  very 
  high 
  and 
  sharp 
  cariua 
  which 
  projects 
  in 
  a 
  great 
  later- 
  

   ally 
  compressed 
  tooth 
  high 
  at 
  base, 
  tapered 
  to 
  an 
  acute 
  point 
  and 
  over- 
  

   hanging 
  the 
  fourth 
  somite 
  and 
  part 
  of 
  the 
  fifth. 
  The 
  fourth, 
  fifth, 
  and 
  

   sixth 
  somites 
  are 
  compressed 
  and 
  armed 
  with 
  a 
  sharp 
  carina 
  which 
  pro- 
  

   jects 
  posteriorly 
  in 
  a 
  conspicuous 
  tooth 
  on 
  the 
  fourth, 
  and 
  in 
  a 
  similar 
  

   but 
  much 
  smaller 
  tooth 
  on 
  the 
  fifth 
  and 
  sixth. 
  The 
  pleura 
  are 
  similar 
  

   to 
  those 
  of 
  A. 
  Agassizii, 
  but 
  relatively 
  less 
  deep, 
  the 
  second 
  is 
  consid- 
  

   erably 
  broader, 
  and 
  the 
  third, 
  fourth, 
  and 
  fifth 
  more 
  produced 
  and 
  more 
  

   evenly 
  rounded 
  posteriorly. 
  

  

  The 
  telson 
  is 
  very 
  long 
  and 
  slender, 
  only 
  very 
  obscurely 
  sulcated 
  

   above, 
  armed 
  with 
  approximately 
  five 
  pairs 
  of 
  mirjute 
  dorsal 
  aculei 
  and 
  

  

  