﻿512 
  On 
  a 
  new 
  Amplripod 
  Species. 
  

  

  row 
  of 
  13 
  minute 
  ones 
  along 
  the 
  inner 
  margin 
  ; 
  6 
  small 
  

   spines 
  are 
  inset 
  submarginally 
  on 
  the 
  outer 
  surface. 
  Palp 
  

   short, 
  hardly 
  longer 
  than 
  the 
  outer 
  plate 
  ; 
  terminal 
  joint 
  

   with 
  a 
  distinct 
  nail 
  and 
  3 
  setules 
  subapically 
  ; 
  the 
  second 
  

   and 
  third 
  joints 
  setose 
  on 
  the 
  inner 
  margins. 
  

  

  Gnathopod 
  1 
  much 
  as 
  in 
  longipes 
  ; 
  second 
  joint 
  slightly 
  

   longer 
  in 
  proportion; 
  sixth 
  joint, 
  palm 
  oblique, 
  with 
  two 
  

   sensory 
  spines 
  at 
  the 
  angle 
  ; 
  palmar 
  margin 
  convex 
  and 
  

   serrulate; 
  finger 
  a 
  little 
  longer 
  than 
  the 
  palm, 
  furnished 
  with 
  

   a 
  decurrent 
  tooth 
  near 
  the 
  apex, 
  3 
  setules 
  inset 
  in 
  the 
  notch 
  

   and 
  1 
  behind 
  it. 
  

  

  Gnathopod 
  2 
  (figs. 
  7 
  and 
  8) 
  much 
  more 
  slender 
  than 
  in 
  

   longipes. 
  The 
  second 
  joint 
  is 
  longer 
  in 
  proportion. 
  The 
  

   sixth 
  joint 
  differs 
  from 
  that 
  of 
  the 
  type 
  species. 
  In 
  longipes 
  

   it 
  is 
  described 
  by 
  ftars 
  as 
  being 
  a 
  little 
  shorter 
  than 
  the 
  fifth, 
  

   oblong-oval, 
  with 
  the 
  " 
  superior 
  edge 
  straight, 
  inferior 
  one 
  

   bulging 
  out 
  at 
  the 
  middle 
  " 
  ; 
  the 
  distal 
  end 
  is 
  truncate, 
  the 
  

   finger 
  being 
  inset 
  in 
  the 
  middle 
  of 
  the 
  margin 
  ; 
  the 
  palm 
  

   straight, 
  rounding 
  into 
  the 
  hind 
  margin. 
  In 
  alleni 
  the 
  sixth 
  

   joint 
  is 
  considerably 
  shorter 
  than 
  the 
  fifth 
  ; 
  it 
  is 
  long 
  and 
  

   narrow, 
  inferior 
  margin 
  straight, 
  not 
  bulging, 
  front 
  margin 
  

   straight, 
  curving 
  a 
  little 
  distally 
  to 
  the 
  insertion 
  of 
  the 
  finger. 
  

   The 
  palm 
  is 
  convex 
  and 
  produced 
  at 
  the 
  palmar 
  angle 
  ; 
  the 
  

   finger 
  smaller 
  than 
  in 
  longipes, 
  of 
  the 
  same 
  construction, 
  but 
  

   with 
  the 
  base 
  more 
  swollen 
  ; 
  tip 
  curved, 
  acute, 
  with 
  a 
  

   decurrent 
  tooth 
  and 
  a 
  cluster 
  of 
  stiff 
  bristles 
  subapically. 
  

   The 
  bristles 
  on 
  the 
  outer 
  side 
  of 
  the 
  hand 
  are 
  more 
  striking 
  

   than 
  in 
  longipes 
  ; 
  the 
  bases 
  are 
  more 
  swollen, 
  being 
  twice 
  the 
  

   width 
  of 
  the 
  shafts, 
  and 
  the 
  apical 
  flagella 
  are 
  much 
  longer 
  

   and 
  thinner 
  (see 
  fig. 
  8). 
  

  

  Perceopods 
  much 
  as 
  in 
  longipes; 
  first 
  and 
  second 
  alike, 
  

   slender, 
  densely 
  setose 
  on 
  the 
  hind 
  margins 
  of 
  the 
  fourth, 
  

   fifth, 
  and 
  sixth 
  joints 
  ; 
  finger 
  long, 
  nearly 
  three- 
  quarters 
  the 
  

   length 
  of 
  the 
  sixth 
  joint. 
  The 
  hinder 
  perseopods 
  rapidly 
  

   increase 
  in 
  length 
  ; 
  basal 
  joints 
  closely 
  set 
  with 
  small 
  spines 
  

   anteriorly, 
  posterior 
  margin 
  serrated 
  ; 
  the 
  other 
  joints 
  very 
  

   slender, 
  spinose, 
  fingers 
  equalling 
  those 
  of 
  the 
  anterior 
  peraao- 
  

   pods 
  in 
  length, 
  but 
  only 
  half 
  their 
  width. 
  

  

  Pleopods. 
  — 
  Kami 
  long, 
  with 
  about 
  17 
  joints 
  in 
  the 
  inner, 
  

   and 
  19 
  in 
  the 
  outer 
  ramus 
  ; 
  5 
  cleft 
  spines 
  ; 
  coupling 
  spines 
  

   small, 
  the 
  lower 
  one 
  with 
  3 
  recurved 
  teeth, 
  the 
  upper 
  and 
  

   smaller 
  one 
  with 
  4. 
  

  

  Uropods 
  more 
  slender 
  and 
  more 
  spinose 
  than 
  in 
  the 
  type 
  

   species. 
  Uropod 
  1 
  : 
  peduncle 
  very 
  long 
  and 
  slender, 
  with 
  a 
  

   row 
  of 
  20 
  short 
  spines 
  on 
  the 
  outer 
  curve, 
  8 
  longer 
  ones 
  on 
  

   the 
  inner 
  side; 
  rami 
  only 
  two-thirds 
  as 
  long- 
  as 
  the 
  peduncle, 
  

  

  