﻿[73] 
  DECAPODA 
  FROM 
  ALBATROSS 
  DREDGINGS. 
  G77 
  

  

  corallinus 
  A. 
  M.-Edwards 
  (Recueil 
  de 
  figures 
  de 
  Crnstaces 
  nouveaux 
  

   on 
  peu 
  connus, 
  pi. 
  [32], 
  1883) 
  than 
  any 
  other 
  known 
  species, 
  although 
  

   the 
  areolation 
  of 
  the 
  carapax 
  and 
  the 
  form 
  and 
  dentation 
  of 
  the 
  rostrum 
  

   are 
  very 
  different. 
  

  

  The 
  rostrum 
  is 
  a 
  little 
  more 
  than 
  a 
  third 
  as 
  long 
  as 
  the 
  rest 
  of 
  the 
  

   carapax, 
  strongly 
  compressed 
  laterally, 
  vertically 
  rather 
  broad 
  at 
  base, 
  

   but 
  regularly 
  tapered 
  to 
  an 
  acute 
  tip; 
  the 
  lower 
  edge' 
  is 
  armed 
  with 
  

   two 
  slender 
  teeth 
  about 
  a 
  third 
  of 
  the 
  way 
  from 
  the 
  tip 
  to 
  the 
  base, 
  and 
  

   the 
  dorsal 
  edge 
  is 
  nearly 
  straight, 
  approximately 
  horizontal, 
  and 
  un- 
  

   armed 
  at 
  the 
  tip, 
  but 
  with 
  four 
  teeth 
  above 
  and 
  in 
  front 
  of 
  the 
  orbit 
  and 
  

   six 
  others 
  in 
  the 
  same 
  series 
  back 
  of 
  them 
  on 
  the 
  dorsal 
  crest 
  of 
  the 
  

   carapax 
  proper, 
  which 
  is 
  a 
  sharp 
  but 
  not 
  very 
  high 
  carina 
  extending 
  

   nearly 
  to 
  the 
  posterior 
  margin 
  and 
  entirely 
  smooth 
  and 
  unarmed 
  back 
  

   of 
  the 
  teeth 
  above 
  mentioned, 
  which 
  do 
  not 
  extend 
  more 
  than 
  a 
  fourth 
  

   of 
  the 
  way 
  from 
  the 
  orbit 
  to 
  the 
  posterior 
  margin. 
  The 
  anterior 
  margin 
  

   is 
  very 
  nearly 
  as 
  in 
  JV. 
  robustus. 
  The 
  upper 
  lateral 
  cariua 
  is 
  conspicu- 
  

   ous, 
  approximately 
  straight, 
  nearly 
  parallel 
  with 
  the 
  dorsum, 
  and 
  ex- 
  

   tends 
  very 
  nearly 
  to 
  the 
  posterior 
  margin. 
  The 
  lower 
  lateral 
  carina 
  is 
  

   conspicuous 
  anteriorly, 
  but 
  is 
  not 
  distinct 
  back 
  of 
  the 
  short 
  vertical 
  

   hepatic 
  carina. 
  

  

  The 
  eyes 
  and 
  eye-stalks 
  are 
  very 
  nearly 
  as 
  in 
  JSf. 
  robustus 
  ; 
  the 
  eyes 
  

   are 
  slightly 
  swollen, 
  more 
  than 
  half 
  as 
  wide 
  as 
  the 
  antennal 
  scale, 
  and 
  

   black. 
  The 
  antennal 
  scales 
  are 
  imperfect 
  at 
  the 
  tips, 
  but 
  are 
  apparently 
  

   very 
  nearly 
  as 
  in 
  N. 
  robustus. 
  

  

  The 
  dorsum 
  of 
  the 
  third 
  and 
  succeeding 
  somites 
  of 
  the 
  pleon 
  are 
  dis- 
  

   tinctly 
  carinated, 
  and 
  the 
  carina 
  projects 
  in 
  a 
  very 
  small 
  tooth 
  on 
  the 
  

   fourth 
  and 
  fifth 
  somites, 
  but 
  there 
  is 
  no 
  evidence 
  whatever 
  of 
  any 
  dor- 
  

   sal 
  tooth 
  or 
  projection 
  on 
  the 
  third. 
  The 
  sixth 
  somite 
  of 
  the 
  pleon 
  is 
  

   more 
  than 
  half 
  as 
  long 
  as 
  the 
  carapax, 
  exclusive 
  of 
  the 
  rostrum, 
  and 
  

   less 
  than 
  half 
  as 
  high 
  as 
  long. 
  The 
  telson 
  is 
  a 
  little 
  longer 
  than 
  the 
  

   sixth 
  somite, 
  strongly 
  sulcated 
  dorsally 
  the 
  whole 
  length, 
  and 
  armed 
  at 
  

   the 
  tip 
  with 
  five 
  spines, 
  of 
  which 
  the 
  outer 
  are 
  much 
  the 
  longer. 
  The 
  

   inner 
  lamella 
  of 
  the 
  uropod 
  reaches 
  to 
  the 
  tip 
  of 
  the 
  telson, 
  is 
  lanceo- 
  

   late 
  in 
  outline, 
  and 
  between 
  four 
  and 
  five 
  times 
  as 
  long 
  as 
  broad. 
  The 
  

   outer 
  lamella 
  is 
  considerably 
  longer 
  than 
  the 
  inner, 
  nearly 
  a 
  fourth 
  as 
  

   broad 
  as 
  long, 
  and 
  broadly 
  rounded 
  at 
  the 
  tip. 
  

  

  Measurements 
  in 
  millimeters. 
  

  

  Length 
  from 
  tip 
  of 
  rostrum 
  to 
  tip 
  of 
  telson 
  45. 
  

  

  Length 
  of 
  carapax, 
  including 
  rostrum 
  17. 
  5 
  

  

  Length 
  of 
  rostrum 
  4.6 
  

  

  Length 
  of 
  eye-stalk 
  and 
  eye 
  2. 
  3 
  

  

  Greatest 
  diameter 
  of 
  eye 
  1.1 
  

  

  Breadth 
  of 
  antennal 
  scale 
  2. 
  

  

  Length 
  of 
  sixth 
  somite 
  of 
  pleon 
  „ 
  7. 
  3 
  

  

  Height 
  of 
  sixth 
  somite 
  of 
  pleon 
  3. 
  1 
  

  

  Length 
  of 
  telson 
  8.3 
  

  

  