﻿[23] 
  

  

  DECAPODA 
  FROM 
  ALBATROSS 
  DREDGlNGiS. 
  

  

  627 
  

  

  Station 
  2308, 
  off 
  Cape 
  Hatteras, 
  is 
  the 
  farthest 
  south 
  that 
  this 
  species 
  

   has 
  been 
  observed. 
  

  

  LlBINlA 
  EMARGINATA 
  Leach. 
  

  

  Libinia 
  emarginata 
  Leach, 
  Zoological 
  Miscellany, 
  ii, 
  p. 
  130, 
  pi. 
  108, 
  1315. 
  

   Libinia 
  canaliculate 
  Say, 
  Jour. 
  Acad. 
  Nat. 
  Sci. 
  Phila., 
  i, 
  77, 
  pi. 
  4, 
  fig. 
  1, 
  1817. 
  

  

  Specimens 
  examined. 
  

  

  [Locality: 
  Off 
  Cape 
  Hatteras.] 
  

  

  Nibilia 
  erinacea 
  A. 
  M. 
  -Edwards. 
  

  

  Crust. 
  Rdgion 
  Mexicaine, 
  p. 
  133, 
  pi. 
  25, 
  1878. 
  

   Station 
  2301, 
  October 
  21, 
  off 
  Cape 
  Hatteras, 
  north 
  hit. 
  35° 
  11' 
  30", 
  

   west 
  long. 
  75° 
  05', 
  59 
  fathoms, 
  coarse 
  sand, 
  temperature 
  75° 
  ; 
  two 
  

   specimens 
  (7256), 
  which 
  give 
  the 
  following: 
  

  

  Measurements 
  in 
  millimeters. 
  

  

  Sex. 
  

  

  Length 
  of 
  carapax, 
  including 
  rostral 
  and 
  posterior 
  spines.. 
  

   Length 
  of 
  carapax, 
  excluding 
  rostral 
  and 
  posterior 
  spines. 
  

  

  Length 
  of 
  rostral 
  spines 
  or 
  horns 
  

  

  Breadth 
  of 
  carapax, 
  including 
  lateral 
  spines 
  

  

  Breadth 
  of 
  carapax, 
  excluding 
  latoral 
  spines 
  

  

  Length 
  of 
  cheliped 
  

  

  Length 
  of 
  chela 
  

  

  Breadth 
  of 
  chela 
  

  

  Length 
  of 
  dactylus 
  

  

  Length 
  of 
  first 
  ambulatory 
  peraeopod 
  

  

  Length 
  of 
  dactylus 
  

  

  Length 
  of 
  fourth 
  ambulatory 
  peraeopod 
  

  

  Length 
  of 
  dactylus 
  

  

  39. 
  

   29.3 
  

  

  9.2 
  

   21.3 
  

   18.4 
  

   32.0 
  

   13.5 
  

  

  2.4 
  

  

  5.0 
  

   45.0 
  

  

  8.7 
  

   33. 
  

  

  7.2 
  

  

  48.0 
  

  

  40.0 
  

  

  7.7 
  

  

  31.0 
  

  

  27.4 
  

  

  45.0 
  

  

  19.8 
  

  

  3.3 
  

  

  7.6 
  

  

  60.0 
  

  

  11.3 
  

  

  40.6 
  

  

  10.2 
  

  

  Both 
  specimens 
  are 
  small 
  and 
  the 
  female 
  apparently 
  immature. 
  In 
  

   the 
  female 
  the 
  spines 
  of 
  the 
  carapax 
  are 
  shorter 
  and 
  more 
  obtuse 
  than 
  

   iu 
  the 
  male, 
  and 
  the 
  rostral 
  horns 
  shorter 
  and 
  less 
  divergent. 
  

  

  Pericera, 
  species. 
  

  

  Station 
  2268, 
  October 
  19. 
  off 
  Cape 
  Hatteras, 
  north 
  lat. 
  35° 
  10' 
  40", 
  

   west 
  long. 
  75° 
  00' 
  10", 
  08 
  fathoms, 
  temperature 
  77°, 
  gray 
  mud 
  ; 
  a 
  single 
  

   young 
  specimen, 
  with 
  the 
  carapax, 
  excluding 
  the 
  rostrum, 
  scarcely 
  10 
  mui 
  

   in 
  length. 
  It 
  resembles 
  the 
  P. 
  spinosissima 
  Saussure, 
  but 
  the 
  carapas 
  

   is 
  armed 
  with 
  fewer 
  and 
  smaller 
  spines, 
  

  

  