﻿[3] 
  

  

  DECAPODA 
  FROM 
  ALBATROSS 
  DREDGINGS. 
  607 
  

  

  LITHODOIDEA. 
  

  

  3. 
  Lithodes 
  Agassizii. 
  410 
  to 
  1/255. 
  

  

  Eyes 
  well 
  developed, 
  black. 
  

  

  FAGUROIDEA. 
  

  

  4. 
  Parapagurus 
  piiosimanus. 
  250 
  to 
  2,221. 
  

  

  Eyes 
  very 
  small, 
  no 
  larger 
  than 
  the 
  diameter 
  of 
  the 
  stalks, 
  distinctly 
  faceted, 
  

   black. 
  

  

  GALATHEOIDEA. 
  

  

  5. 
  Munidopsis 
  curvirostra. 
  75 
  to 
  1,290. 
  

  

  Eye-stalk 
  very 
  short, 
  capable 
  of 
  considerable 
  motion, 
  and 
  its 
  whole 
  terminal 
  

   portion 
  covered 
  with 
  an 
  ovoid, 
  unfaceted 
  cornea; 
  pigment 
  white. 
  

  

  0. 
  Munidopsis 
  crassa. 
  1,742 
  to 
  2,620. 
  

  

  Eye-stalks 
  short, 
  capable 
  of 
  very 
  little 
  motion, 
  bearing 
  the 
  small 
  hemispher- 
  

   ical 
  cornea 
  partially 
  imbedded 
  near 
  the 
  distal 
  end, 
  which 
  projects 
  in 
  a 
  

   spine; 
  cornea 
  unfaceted 
  ; 
  pigment 
  white. 
  

  

  7. 
  Munidopsis 
  similis. 
  1,060. 
  

  

  Eyes 
  as 
  in 
  the 
  last 
  species. 
  

  

  8. 
  Munidopsis 
  Bairdii. 
  1,497 
  to 
  1,742. 
  

  

  Eyes 
  nearly 
  as 
  in 
  6 
  and 
  7. 
  

  

  9. 
  Munidopsis 
  rostrata. 
  1,098 
  to 
  1,356. 
  

  

  Eye-stalks 
  short, 
  capable 
  of 
  some 
  motion, 
  cornea 
  terminal, 
  large, 
  swollen, 
  

   reniform, 
  unfaceted 
  ; 
  pigment 
  white. 
  

  

  MACRTJRA. 
  

  

  ERYONTIDiE. 
  

  

  10. 
  Pentaeheles 
  sculptus. 
  250 
  to 
  1,081. 
  

  

  Eyes 
  reduced 
  to 
  lobes 
  of 
  the 
  ocular 
  somite 
  imbedded 
  in 
  sinuses 
  in 
  the 
  front 
  

   of 
  the 
  carapax 
  ; 
  each 
  lobe 
  with 
  a 
  small 
  cornea-like 
  area 
  above 
  and 
  a 
  

   smaller 
  one 
  below 
  tipping 
  a 
  projecting 
  process; 
  no 
  colored 
  pigment 
  nor 
  

   faceted 
  surface. 
  

  

  11. 
  Pentaeheles 
  nanus. 
  705 
  to 
  1,917. 
  

  

  Eyes 
  as 
  in 
  the 
  last 
  species. 
  

  

  12. 
  Pentaeheles 
  debilis. 
  1,290 
  to 
  1,309. 
  

  

  Eyes 
  nearly 
  as 
  in 
  10 
  and 
  11. 
  

  

  CRANGKJNID^J. 
  

  

  13. 
  Pontophilus 
  abyssi. 
  1,917 
  to 
  2,221. 
  

  

  Eye-stalks 
  very 
  short 
  ; 
  eyes 
  about 
  as 
  large 
  as 
  in 
  most 
  species 
  of 
  the 
  genus, 
  

   but 
  much 
  smaller 
  than 
  in 
  the 
  closely 
  allied 
  species 
  (P. 
  gracilis) 
  inhabiting 
  

   200 
  to 
  500 
  fathoms; 
  cornea 
  rather 
  indistinctly 
  hexagonally 
  faceted; 
  pig- 
  

   ment 
  almost 
  colorless 
  except 
  over 
  an 
  area 
  on 
  the 
  outer 
  dorsal 
  side 
  (which 
  

   is 
  apparently 
  of 
  somewhat 
  different 
  structure 
  from 
  the 
  rest 
  of 
  the 
  eye), 
  

   where 
  there 
  are 
  many 
  points 
  of 
  dark 
  pigment. 
  

  

  