﻿Copepoda 
  from 
  the 
  Falkland 
  Islands. 
  375 
  

  

  the 
  two 
  immediately 
  preceding. 
  The 
  formula 
  shows 
  approxi- 
  

   mately 
  the 
  proportional 
  lengths 
  of 
  the 
  various 
  joints 
  : 
  — 
  

  

  1.2.3.4.5.6.7 
  

  

  10 
  14 
  15 
  5 
  5 
  6 
  6 
  

  

  Anterinse 
  small, 
  the 
  outer 
  ramus 
  rudimentary 
  and 
  repre- 
  

   sented 
  by 
  tAvo 
  minute 
  setae 
  (fig. 
  11). 
  Second 
  maxillipeds 
  

   moderately 
  stout 
  and 
  armed 
  with 
  a 
  long 
  terminal 
  claw 
  

   (fig. 
  12). 
  The 
  first 
  pair 
  of 
  thoracic 
  legs 
  are 
  tolerably 
  stout 
  

   and 
  the 
  inner 
  ramus 
  is 
  furnished 
  with 
  a 
  long 
  and 
  stout 
  

   terminal 
  claw 
  ; 
  the 
  outer 
  ramus, 
  which 
  consists 
  of 
  three 
  

   joints, 
  is 
  only 
  about 
  half 
  as 
  long 
  as 
  the 
  first 
  joint 
  of 
  the 
  inner 
  

   ramus 
  (fig. 
  13). 
  The 
  fifth 
  pair 
  are 
  broadly 
  foliaceous 
  ; 
  the 
  

   inner 
  portion 
  of 
  the 
  proximal 
  joint 
  is 
  somewhat 
  expanded, 
  

   and 
  its 
  distal 
  end 
  is 
  obliquely 
  truncated, 
  and 
  furnished 
  with 
  

   four 
  setee, 
  and 
  there 
  is 
  also 
  a 
  seta 
  on 
  the 
  inner 
  margin 
  ; 
  the 
  

   two 
  outermost 
  sctse 
  are 
  close 
  together, 
  but 
  the 
  others 
  are 
  

   more 
  widely 
  apart 
  ; 
  the 
  outer 
  joint 
  is 
  suborbicular 
  and 
  bears 
  

   six 
  setae 
  round 
  its 
  distal 
  end, 
  as 
  shown 
  in 
  the 
  drawing 
  

   (fig. 
  14). 
  The 
  caudal 
  rami 
  are 
  short 
  and 
  scarcely 
  equal 
  in 
  

   length 
  to 
  the 
  last 
  segment 
  of 
  the 
  abdomen. 
  

  

  The 
  male 
  was 
  not 
  observed. 
  

  

  This 
  species 
  has 
  a 
  general 
  resemblance 
  to 
  Laophonte 
  

   gracilijjes, 
  G. 
  S. 
  Brady, 
  as 
  already 
  stated* 
  ; 
  but 
  the 
  antennae 
  

   have 
  no 
  outer 
  ramus, 
  and 
  there 
  is 
  also 
  a 
  difference 
  in 
  the 
  

   form 
  of 
  the 
  fifth 
  pair 
  of 
  thoracic 
  legs. 
  

  

  MONSTRILLOIDA. 
  

  

  Fam. 
  Monstrillidse. 
  

  

  Genus 
  Monstrilla, 
  Dana, 
  184-8. 
  

  

  Monstrilla 
  mixta, 
  sp. 
  n. 
  (PI. 
  XVI. 
  figs. 
  8-12.) 
  

  

  Female. 
  — 
  In 
  its 
  general 
  appearance 
  and 
  structure 
  this 
  

   form 
  is 
  somewhat 
  similar 
  to 
  Monstrilla 
  conjmictiva, 
  Giesb., 
  

   described 
  in 
  his 
  account 
  of 
  the 
  Copepoda 
  of 
  the 
  Belgian 
  

   Expedition, 
  1897-1898-18991. 
  

  

  The 
  body 
  is 
  moderately 
  slender 
  aiid 
  elongated 
  ; 
  the 
  length 
  

   of 
  the 
  specimen 
  represented 
  by 
  the 
  drawing 
  (fig. 
  8) 
  is 
  about 
  

   2^ 
  mm. 
  ; 
  the 
  proximal 
  segment 
  is 
  fully 
  half 
  the 
  entire 
  length 
  

  

  * 
  C/. 
  ' 
  Die 
  marinen 
  Copepoden 
  der 
  Deutsche 
  Sudpolar 
  Exped. 
  1901- 
  

   1903,' 
  p. 
  562. 
  

  

  t 
  'Exped. 
  Antarctic 
  Beige: 
  Copepoden,' 
  p. 
  40, 
  Taf. 
  xii. 
  figs. 
  1-6 
  

   (1902). 
  

  

  