﻿[19] 
  DECAPODA 
  FROM 
  ALBATROSS 
  DREDG1NGS. 
  623 
  

  

  tenths 
  as 
  long 
  as 
  the 
  rest 
  of 
  the 
  carapax. 
  The 
  three 
  erect 
  gastric 
  and 
  

   the 
  postorbital 
  spines 
  are 
  siibequal 
  and 
  very 
  slender 
  and 
  acute, 
  and 
  the 
  

   postorbital 
  spine 
  each 
  side 
  is 
  situated 
  slightly 
  in 
  front 
  of 
  a 
  line 
  from 
  the 
  

   middle 
  to 
  the 
  lateral 
  gastric 
  in 
  the 
  females, 
  but 
  slightly 
  in 
  front 
  of 
  it 
  in 
  

   the 
  male. 
  The 
  cardiac 
  spine 
  is 
  considerably 
  stouter 
  and 
  a 
  little 
  higher 
  

   than 
  the 
  gastric 
  spines, 
  and 
  either 
  side 
  of 
  it 
  on 
  the 
  dorsal 
  part 
  of 
  the 
  

   branchial 
  region 
  there 
  is 
  a 
  much 
  smaller 
  erect 
  spine, 
  and 
  on 
  a 
  line 
  be- 
  

   tween 
  this 
  and 
  the 
  lateral 
  gastric 
  there 
  is 
  a 
  similar 
  spine 
  in 
  the 
  females, 
  

   but 
  only 
  a 
  minute 
  spine 
  or 
  tubercle 
  in 
  the 
  male. 
  There 
  are 
  two 
  or 
  three 
  

   minute 
  spines 
  or 
  tubercles 
  on 
  the 
  protuberant 
  superior 
  lobe 
  of 
  the 
  hepatic 
  

   region, 
  and 
  about 
  as 
  many 
  more 
  back 
  of 
  these 
  on 
  the 
  side 
  of 
  the 
  branchial 
  

   region, 
  while 
  on 
  the 
  inferior 
  hepatic 
  lobe, 
  opposite 
  the 
  middle 
  of 
  the 
  

   buccal 
  area, 
  there 
  is 
  a 
  much 
  larger 
  spine 
  directed 
  downward, 
  and 
  back 
  

   of 
  this 
  a 
  smaller 
  one, 
  near 
  the 
  base 
  of 
  the 
  chelipcd. 
  The 
  supraorbital 
  

   spine 
  is 
  slender 
  and 
  about 
  as 
  long 
  as 
  the 
  gastric 
  spines, 
  and 
  in 
  the 
  male 
  

   the 
  iuterantennular 
  is 
  fully 
  as 
  long, 
  stouter, 
  and 
  directed 
  downward 
  and 
  

   curved 
  slightly 
  forward. 
  The 
  basal 
  segment 
  of 
  the 
  antenna 
  is 
  irregu- 
  

   larly 
  armed 
  beneath 
  with 
  small 
  spines 
  or 
  teeth, 
  and 
  in 
  the 
  male 
  with 
  a 
  

   slender 
  spine 
  at 
  the 
  distal 
  end. 
  The 
  eye-stalk 
  is 
  armed 
  with 
  a 
  minute 
  

   spine 
  or 
  tubercle 
  in 
  front, 
  and 
  above 
  with 
  a 
  small 
  tubercle 
  at 
  the 
  emargi- 
  

   nation 
  of 
  the 
  cornea. 
  The 
  exposed 
  surface 
  of 
  the 
  ischium 
  and 
  merus 
  of 
  

   the 
  external 
  maxillipeds 
  is 
  armed 
  conspicuously 
  with 
  marginal 
  and 
  sub- 
  

   marginal 
  spines, 
  of 
  which 
  one 
  on 
  the 
  inner 
  edge 
  of 
  the 
  merus 
  is 
  very 
  

   Long. 
  

  

  The 
  chelipeds 
  in 
  the 
  male 
  are 
  stout 
  and 
  nearly 
  twice 
  as 
  long 
  as 
  the 
  

   carapax, 
  including 
  the 
  rostral 
  horns 
  ; 
  the 
  merus 
  is 
  a 
  little 
  shorter 
  than 
  

   the 
  chela 
  and 
  triquetral, 
  with 
  all 
  three 
  of 
  the 
  angles 
  thickly 
  armed 
  with 
  

   very 
  long 
  and 
  slender 
  spines; 
  the 
  carpus 
  is 
  rounded 
  externally, 
  but 
  

   armed 
  like 
  the 
  merus; 
  the 
  chela 
  is 
  longer 
  than 
  the 
  carapax, 
  excluding 
  

   the 
  rostral 
  horns, 
  and 
  naked 
  and 
  unarmed 
  except 
  by 
  a 
  few 
  spines 
  along 
  

   the 
  proximal 
  part 
  of 
  the 
  dorsal 
  edge; 
  the 
  body 
  is 
  stout 
  and 
  swollen, 
  

   and 
  the 
  digits 
  slightly 
  shorter 
  than 
  the 
  body, 
  nearly 
  straight 
  vertically 
  

   but 
  strongly 
  curved 
  laterally, 
  very 
  much 
  compressed, 
  grooved 
  longitu- 
  

   dinally 
  on 
  the 
  sides 
  and 
  on 
  the 
  rather 
  broad 
  dorsal 
  edge 
  of 
  the 
  dactylus, 
  

   and 
  the 
  prehensile 
  edges 
  crenately 
  serrate 
  and 
  in 
  contact 
  throughout 
  

   when 
  closed. 
  In 
  the 
  female 
  the 
  chelipeds 
  are 
  only 
  about 
  once 
  and 
  a 
  

   half 
  as 
  long 
  as 
  the 
  carapax, 
  including 
  the 
  rostral 
  spines, 
  much 
  more 
  

   slender 
  than 
  in 
  the 
  male, 
  and 
  armed 
  with 
  proportionally 
  longer 
  spines; 
  

   the 
  chela 
  is 
  much 
  shorter 
  than 
  the 
  carapax, 
  excluding 
  the 
  rostral 
  horns; 
  

   the 
  body 
  is 
  scarcely 
  at 
  all 
  swollen, 
  and 
  is 
  armed 
  with 
  slender 
  spines 
  

   along 
  both 
  edges 
  and 
  with 
  minute 
  spines 
  or 
  tubercles 
  on 
  the 
  sides, 
  and 
  

   the 
  digits 
  are 
  proportionally 
  longer 
  and 
  narrower 
  than 
  in 
  the 
  male. 
  

  

  The 
  ambulatory 
  legs 
  are 
  very 
  long 
  and 
  slender, 
  clothed 
  to 
  the 
  tips 
  of 
  

   the 
  dactyli 
  with 
  numerous 
  curved 
  setiform 
  hairs 
  which 
  persistently 
  re- 
  

   tain 
  mud 
  aud 
  other 
  foreign 
  substances, 
  and 
  each 
  is 
  armed 
  with 
  a 
  slender 
  • 
  

   spine 
  on 
  the 
  upper 
  side 
  of 
  the 
  distal 
  end 
  of 
  the 
  merus. 
  

  

  