﻿[09 
  j 
  DECAPODA 
  FROM 
  ALBATROSS 
  DREDGING 
  S. 
  673 
  

  

  The 
  epipod 
  of 
  the 
  fourth 
  perseopod 
  is 
  much 
  further 
  developed 
  than 
  in 
  

   any 
  other 
  of 
  the 
  species 
  which 
  I 
  have 
  seen,* 
  bat 
  it 
  is 
  still 
  apparently 
  

   of 
  little 
  or 
  no 
  functional 
  importance, 
  as 
  it 
  consists 
  only 
  of 
  a 
  simple 
  elon- 
  

   gated 
  horizontal 
  lamella, 
  corresponding 
  to 
  the 
  horizontal 
  basal 
  portion 
  

   of 
  the 
  epipods 
  in 
  front 
  of 
  it. 
  

  

  The 
  eggs 
  are 
  very 
  few 
  and 
  very 
  large, 
  being 
  approximately 
  4 
  by 
  3"" 
  u 
  

   in 
  longer 
  and 
  shorter 
  diameter. 
  

  

  Measurements 
  in 
  millimeters. 
  

  

  Length 
  from 
  tip 
  of 
  rostrum 
  to 
  tip 
  of 
  telson 
  . 
  80+ 
  

  

  Length 
  of 
  carapax, 
  excluding 
  rostrum 
  15.3 
  

  

  Length 
  of 
  rostrum 
  20+ 
  

  

  Height 
  of 
  carapax 
  9. 
  5 
  

  

  Breadth 
  of 
  carapax 
  7, 
  5 
  

  

  Length 
  of 
  eye-stalk 
  and 
  eye 
  3. 
  2 
  

  

  Greatest 
  diameter 
  of 
  eye 
  2.5 
  

  

  Length 
  of 
  autcnnal 
  scale 
  11.4 
  

  

  Breadth 
  of 
  an 
  tennal 
  scale 
  2. 
  5 
  

  

  Length 
  of 
  first 
  perseopod 
  14. 
  

  

  Length 
  of 
  chela 
  4.2 
  

  

  Breadth 
  of 
  chela 
  0.8 
  

  

  Length 
  of 
  dactylns 
  1.8 
  

  

  Length 
  of 
  second 
  perseopod 
  15. 
  

  

  Length 
  of 
  chela 
  4.5 
  

  

  Breadth 
  of 
  chela 
  0. 
  G 
  

  

  Length 
  of 
  dactylus 
  1.9 
  

  

  Length 
  of 
  third 
  peraiopod 
  .' 
  23. 
  

  

  Length 
  of 
  propodus 
  5. 
  4 
  

  

  Length 
  of 
  dactylus 
  „ 
  4. 
  4 
  

  

  Length 
  of 
  fon 
  rth 
  perojopod 
  22. 
  

  

  Length 
  of 
  propodus 
  5.0 
  

  

  Length 
  of 
  dactylus 
  4.2 
  

  

  Length 
  of 
  fifth 
  perseopod 
  16. 
  

  

  Length 
  of 
  propodus 
  4.0 
  

  

  Length 
  of 
  dactylus 
  1.1 
  

  

  Length 
  of 
  sixth 
  somite 
  of 
  pleon 
  11. 
  

  

  Height 
  of 
  sixth 
  somite 
  of 
  pleon 
  4. 
  3 
  

  

  Length 
  of 
  telson 
  12. 
  7 
  

  

  Length 
  of 
  inner 
  lamella 
  of 
  uropod 
  10. 
  1 
  

  

  Breadth 
  of 
  inner 
  lamella 
  of 
  uropod 
  1.7 
  

  

  Length 
  of 
  outer 
  lamella 
  of 
  uropod 
  11.0 
  

  

  Breadth 
  of 
  outer 
  lamella 
  of 
  uropod 
  1.9 
  

  

  Ephyiuna 
  Smith. 
  

  

  Proc. 
  National 
  Mus., 
  vii, 
  p. 
  506, 
  1885. 
  , 
  

  

  This 
  genus, 
  which 
  is 
  based 
  on 
  a 
  single 
  specimen, 
  wanting 
  the 
  greater 
  

   part 
  of 
  the 
  second, 
  third, 
  and 
  fourth 
  peraeopods, 
  is 
  readily 
  distinguished 
  

   from 
  Acanthephyra 
  by 
  the 
  ischial 
  and 
  meral 
  segments 
  of 
  the 
  fifth 
  perae- 
  

   opods, 
  which 
  are 
  compressed, 
  very 
  broad, 
  and 
  form 
  broad 
  lamellar 
  oper- 
  

  

  *In 
  all 
  the 
  other 
  species 
  here 
  recorded 
  there 
  is 
  an 
  obscure 
  rudiment 
  of 
  this 
  epipod, 
  

   a 
  minute 
  appressed 
  lamelliform 
  lobe, 
  not 
  longer 
  than 
  broad, 
  which 
  is 
  not 
  indicated 
  

   in 
  the 
  branehio-epipodal 
  formula) 
  I 
  have 
  given 
  for 
  them. 
  

  

  S. 
  Mis. 
  70 
  43 
  

  

  