﻿[71] 
  DECAPODA 
  FKOM 
  ALBATROSS 
  DEEDGINGS. 
  675 
  

  

  but 
  are 
  evidently 
  very 
  nearly 
  as 
  in 
  A. 
  Agassizii, 
  and 
  apparently 
  reach 
  

   to 
  about 
  the 
  tips 
  of 
  the 
  antennal 
  scales. 
  

  

  The 
  first 
  perseopods 
  are 
  about 
  as 
  long 
  as 
  the 
  carapax 
  including 
  the 
  

   rostrum, 
  and 
  are 
  clothed 
  with 
  numerous 
  hairs 
  ; 
  the 
  ischium 
  and 
  merus 
  

   make 
  about 
  half 
  the 
  length 
  of 
  the 
  endopod, 
  and 
  are 
  strongly 
  compressed 
  

   and 
  broad, 
  the 
  merus 
  being 
  considerably 
  more 
  than 
  a 
  third 
  as 
  broad 
  as 
  

   long; 
  the 
  carpus 
  is 
  about 
  three-fifths 
  as 
  long 
  and 
  half 
  as 
  broad 
  as 
  the 
  

   merus 
  ; 
  the 
  chela 
  is 
  somewhat 
  stouter 
  than 
  the 
  carpus, 
  not 
  far 
  from 
  

   twice 
  as 
  loug, 
  and 
  tapered 
  distally 
  to 
  the 
  bases 
  of 
  the 
  digits, 
  which 
  are 
  

   about 
  a 
  third 
  of 
  the 
  whole 
  length, 
  very 
  slender 
  and 
  strongly 
  curved 
  at 
  

   the 
  tips. 
  The 
  fifth 
  pergeopods 
  are 
  about 
  a 
  fourth 
  longer 
  than 
  the 
  first 
  

   and 
  are 
  clothed 
  with 
  very 
  few 
  hairs 
  ; 
  the 
  ischium 
  and 
  merus 
  make 
  fully 
  

   half 
  the 
  entire 
  length 
  ; 
  both 
  are 
  broad 
  and 
  strongly 
  compressed, 
  and 
  the 
  

   latter 
  is 
  fully 
  a 
  third 
  as 
  broad 
  as 
  long, 
  with 
  the 
  dorsal 
  margin 
  nearly 
  

   straight 
  and 
  the 
  ventral 
  strongly 
  curved 
  upward 
  to 
  the 
  articulation 
  

   with 
  the 
  carpus, 
  which 
  is 
  very 
  slender 
  and 
  scarcely 
  longer 
  than 
  the 
  

   breadth 
  of 
  the 
  merus; 
  the 
  propodus 
  is 
  about 
  twice 
  as 
  long 
  as 
  the 
  car- 
  

   pus 
  aud 
  no 
  stouter 
  ; 
  the 
  dactylus, 
  exclusive 
  of 
  the 
  terminal 
  spines 
  and 
  

   setae, 
  is 
  stout 
  and 
  about 
  twice 
  as 
  long 
  as 
  the 
  distal 
  diameter 
  of 
  rhe 
  pro- 
  

   podus. 
  

  

  There 
  is 
  no 
  carina 
  on 
  any 
  somite 
  of 
  the 
  pleon, 
  but 
  the 
  dorsum 
  of 
  the 
  

   third 
  somite 
  projects 
  back 
  in 
  a 
  small, 
  vertically 
  compressed 
  spine 
  over 
  

   the 
  fourth 
  somite, 
  in 
  the 
  dorsum 
  of 
  which 
  there 
  is 
  an 
  obscure, 
  and 
  pos- 
  

   sibly 
  accidental, 
  sulcus. 
  The 
  pleura 
  are 
  similar 
  in 
  outline 
  to 
  those 
  of 
  

   Acanthephyra 
  Agassizii, 
  but 
  the 
  second 
  is 
  relatively 
  a 
  little 
  broader, 
  

   the 
  third 
  and 
  fourth 
  more 
  evenly 
  rounded 
  posteriorly, 
  and 
  the 
  fifth 
  a 
  

   little 
  more 
  obtuse 
  at 
  the 
  posterior 
  angle. 
  The 
  sixth 
  somite 
  is 
  about 
  

   two-thirds 
  as 
  long 
  as 
  the 
  carapax, 
  excluding 
  the 
  rostrum, 
  and 
  less 
  than 
  

   half 
  as 
  high 
  as 
  long. 
  

  

  The 
  telson 
  is 
  very 
  much 
  longer 
  than 
  the 
  sixth 
  somite, 
  tapers 
  into 
  a 
  

   very 
  long 
  and 
  narrow 
  tip, 
  and 
  is 
  armed 
  along 
  the 
  distal 
  two-thirds 
  of 
  

   either 
  edge 
  with 
  numerous 
  (twenty 
  to 
  twenty-five) 
  small 
  aculei. 
  The 
  

   inner 
  latnellae 
  of 
  the 
  uropods 
  are 
  about 
  as 
  long 
  as 
  the 
  sixth 
  somite 
  of 
  

   the 
  pleon, 
  lanceolate 
  in 
  outline, 
  and 
  less 
  than 
  a 
  sixth 
  as 
  broad 
  as 
  long. 
  

   The 
  outer 
  lamellae 
  reach 
  to 
  near 
  the 
  tip 
  of 
  the 
  telson, 
  are 
  about 
  six 
  

   times 
  as 
  long 
  as 
  broad, 
  and 
  evenly 
  rounded 
  at 
  the 
  tips. 
  

  

  Measurements 
  in 
  millimeters. 
  

  

  Length 
  from 
  tip 
  of 
  rostrum 
  to 
  tip 
  of 
  telson 
  56. 
  

  

  Length 
  of 
  carapax, 
  including 
  rostrum 
  17. 
  

  

  Length 
  of 
  rostrum 
  4.8 
  

  

  Height 
  of 
  carapax 
  '. 
  8. 
  3 
  

  

  Breadth 
  of 
  carapax 
  6.2 
  

  

  Length 
  of 
  eye-stalk 
  and 
  eye 
  2. 
  8 
  

  

  Greatest 
  diameter 
  of 
  eye 
  1.7 
  

  

  Length 
  of 
  perteopod 
  - 
  16. 
  

  

  Length 
  of 
  merus...... 
  ..,.....„, 
  ,...., 
  ..-., 
  4,6 
  

  

  