﻿[91] 
  DECAPODA 
  FROM 
  ALBATEOSS 
  DREDGINGS. 
  695 
  

  

  In 
  the 
  general 
  form 
  and 
  areolation 
  of 
  the 
  carapax 
  tins 
  species 
  is 
  very 
  

   similar 
  to 
  Benthcecetes 
  BartletU, 
  but 
  there 
  is 
  a 
  distinct 
  hepatic 
  spine, 
  as 
  

   in 
  Benthonectes 
  Jilipes, 
  though 
  very 
  much 
  smaller. 
  The 
  dorsum 
  is 
  cari- 
  

   nated 
  or 
  slightly 
  angulated 
  nearly 
  to 
  the 
  posterior 
  border, 
  but 
  ante- 
  

   riorly 
  it 
  does 
  not 
  rise 
  at 
  the 
  base 
  of 
  the 
  rostrum 
  nearly 
  as 
  much 
  as 
  in 
  

   the 
  two 
  species 
  just 
  mentioned. 
  The 
  rostrum 
  is 
  strongly 
  compressed, 
  

   broad 
  vertically, 
  and 
  the 
  upper 
  edge 
  is 
  somewhat 
  arcuate 
  above 
  and 
  

   just 
  back 
  of 
  the 
  orbit, 
  where 
  it 
  is 
  armed 
  with 
  two 
  teeth, 
  but 
  in 
  front 
  it 
  

   tapers 
  to 
  an 
  acute 
  point, 
  nearly 
  or 
  quite 
  reaching 
  to 
  the 
  tips 
  of 
  the 
  

   eyes. 
  

  

  The 
  eyes 
  are 
  in 
  bad 
  condition 
  in 
  all 
  the 
  specimens. 
  They 
  are 
  similar 
  

   to 
  those 
  of 
  Benthcecetes 
  BartletU, 
  but 
  the 
  cornea 
  is 
  apparently 
  a 
  little 
  

   larger 
  and 
  more 
  compressed 
  vertically, 
  and 
  the 
  pigment 
  is 
  apparently 
  

   white 
  or 
  very 
  light 
  in 
  color. 
  The 
  antennae 
  and 
  antennulae 
  are 
  essen- 
  

   tially 
  as 
  in 
  Benthcecetes 
  BartletU. 
  The 
  crowns 
  of 
  the 
  mandibles 
  are 
  also 
  

   very 
  nearly 
  as 
  in 
  that 
  species, 
  but 
  the 
  palpi 
  are 
  very 
  much 
  larger; 
  the 
  

   proximal 
  segment 
  is 
  nearly 
  as 
  broad 
  as 
  long, 
  and 
  the 
  distal 
  nearly 
  as 
  

   long 
  as 
  the 
  proximal 
  and 
  very 
  narrow, 
  much 
  less 
  than 
  half 
  as 
  wide 
  as 
  

   long. 
  The 
  maxillae 
  are 
  nearly 
  as 
  in 
  Benthcecetes 
  BartletU. 
  The 
  ultimate 
  

   segment 
  of 
  the 
  endopod 
  of 
  the 
  maxilliped 
  is 
  about 
  a 
  sixth 
  as 
  long 
  as 
  

   the 
  penultimate 
  segment 
  and 
  intermediate 
  in 
  form 
  and 
  size 
  between 
  

   that 
  of 
  Benthcecetes 
  BartletU 
  and 
  that 
  of 
  Benthesicynms 
  f 
  carinatus, 
  and 
  

   the 
  distal 
  extremity 
  of 
  the 
  exopod 
  is 
  suddenly 
  narrowed 
  into 
  a 
  slender 
  

   flagellum, 
  but 
  otherwse 
  the 
  maxilliped 
  agrees 
  with 
  that 
  of 
  Benthcecetes 
  

   BartletU. 
  

  

  The 
  first 
  gnathopod 
  is 
  intermediate 
  in 
  form 
  between 
  that 
  of 
  Benthce- 
  

   cetes 
  and 
  that 
  of 
  Benthesicymus 
  ? 
  carinatus 
  ; 
  the 
  mesial 
  side 
  of 
  the 
  

   merus 
  is 
  expanded 
  into 
  a 
  thin 
  lamella 
  the 
  whole 
  length 
  of 
  the 
  segment, 
  

   which 
  is 
  two-fifths 
  as 
  broad 
  as 
  long, 
  but 
  not 
  much 
  broader 
  distally 
  than 
  

   proximally 
  and 
  projects 
  only 
  very 
  slightly 
  beyond 
  the 
  articulation 
  of 
  

   the 
  carpus 
  ; 
  the 
  terminal 
  segments 
  are 
  nearly 
  as 
  in 
  Benthesicymus 
  f 
  cari- 
  

   natus. 
  The 
  second 
  gnathopods 
  reach 
  beyond 
  the 
  middle 
  of 
  the 
  antenna! 
  

   scales, 
  and 
  the 
  relative 
  proportion 
  of 
  the 
  segments 
  is 
  about 
  the 
  same 
  

   as 
  in 
  Benthcecetes 
  BartletU, 
  but 
  the 
  form 
  of 
  the 
  dactylus 
  is 
  different, 
  

   though 
  it 
  is 
  carried 
  in 
  the 
  same 
  position. 
  This 
  segment 
  is 
  a 
  little 
  longer 
  

   and 
  narrower 
  than 
  in 
  Benthcecetes 
  BartletU, 
  and 
  obliquely 
  truncated 
  on 
  

   the 
  mesial 
  side 
  at 
  the 
  extremity, 
  so 
  that 
  the 
  triangular 
  tip, 
  which 
  is 
  

   armed 
  with 
  a 
  single 
  long 
  spine, 
  is 
  at 
  the 
  outer 
  edge 
  ; 
  the 
  outer 
  and 
  the 
  

   truncated 
  distal 
  edges 
  are 
  setigerous. 
  

  

  There 
  are 
  minute 
  rudimentary 
  exopods 
  at 
  the 
  bases 
  of 
  all 
  the 
  peraeo- 
  

   pods, 
  of 
  which 
  the 
  first 
  three 
  pairs 
  are 
  otherwise 
  very 
  much 
  as 
  in 
  

   Benthonectes 
  Jilipes. 
  The 
  number 
  and 
  arrangement 
  of 
  the 
  branchiae 
  

   and 
  epipods 
  is 
  the 
  same 
  as 
  in 
  Benthcecetes 
  BartletU 
  and 
  Benthonectes 
  

   Jilipes. 
  

  

  The 
  first 
  and 
  second 
  somites 
  of 
  the 
  pleon 
  are 
  evenly 
  rounded 
  above; 
  

   the 
  third 
  is 
  carinated 
  posteriorly, 
  the 
  fourth 
  and 
  fifth 
  for 
  nearly 
  the 
  

   whole 
  length, 
  and 
  on 
  each 
  of 
  these 
  somites 
  the 
  carina 
  projects 
  at 
  the 
  

  

  