﻿448 
  Eev. 
  A. 
  M. 
  Norman's 
  Notes 
  on 
  British 
  Amphipoda. 
  

  

  187G. 
  Monoculodes 
  affinis, 
  Boeck, 
  De 
  Skand. 
  og 
  Arkt. 
  Ampliip. 
  p. 
  265, 
  

  

  pi. 
  xiv. 
  fig. 
  6, 
  2 
  . 
  

   1883. 
  Monoculodes 
  carinatus, 
  Schneider, 
  Af 
  Norges 
  kyster 
  forekorn. 
  Art. 
  

  

  af 
  CEdiceridaa, 
  p. 
  19, 
  pi. 
  i. 
  fisr. 
  4. 
  

   1887. 
  Monoculodes 
  carinatus, 
  Chevreaux, 
  Cat. 
  Ampliip. 
  du 
  Sud-ouest 
  

  

  de 
  la 
  Bretagne, 
  p. 
  12. 
  

  

  Ilab. 
  Shetland, 
  Cumbrae, 
  Firth 
  of 
  Clyde, 
  Northumberland 
  

   coast 
  (A.M.N.); 
  Banff 
  (T. 
  Edward); 
  25 
  miles 
  off 
  May 
  

   Island, 
  in 
  the 
  Firth 
  of 
  Forth 
  {John 
  Murray) 
  : 
  Mus. 
  Norm. 
  

  

  Distribution. 
  Floro, 
  Norway, 
  35 
  fath. 
  {A. 
  M. 
  N.) 
  ; 
  South 
  

   and 
  West 
  Norway 
  (G. 
  0. 
  Sars) 
  ; 
  Bohuslan 
  (Brnzdius) 
  ; 
  

   Croisic, 
  France 
  (Chevreaux). 
  

  

  Adult 
  female. 
  Rostrum 
  (fig. 
  1) 
  largely 
  hooded, 
  equal 
  to 
  

   length 
  of 
  first 
  joint 
  of 
  antcnnules, 
  extremity 
  bent 
  downwards, 
  

   rather 
  blunt 
  ; 
  eye 
  large, 
  occupying 
  the 
  greater 
  part 
  of 
  the 
  

   rostrum. 
  Antennules 
  with 
  second 
  joint 
  equalling 
  first, 
  the 
  

   third 
  not 
  half 
  the 
  length 
  of 
  the 
  second. 
  Antennas 
  with 
  fifth 
  

   joint 
  about 
  one 
  third 
  longer 
  than 
  fourth. 
  First 
  gnathopods 
  

   (fig. 
  2) 
  having 
  the 
  wrist 
  short, 
  calx 
  half 
  the 
  length 
  of 
  hand, 
  

   broadly 
  linguiform, 
  broadest 
  in 
  the 
  middle, 
  widely 
  rounded 
  

   at 
  the 
  extremity, 
  hollowed 
  on 
  the 
  face 
  towards 
  the 
  palm, 
  setose 
  

   all 
  over; 
  hand 
  ovate, 
  palm 
  well 
  arched, 
  occupying 
  one 
  half 
  

   the 
  margin, 
  the 
  strongly 
  curved 
  finger 
  reaching 
  nearly 
  to 
  

   extremity 
  of 
  calx 
  of 
  wrist. 
  Second 
  gnathopods 
  (fig. 
  3) 
  

   having 
  the 
  wrist 
  produced 
  into 
  a 
  very 
  long, 
  narrow, 
  linear 
  

   calx, 
  which 
  is 
  appressed 
  to 
  the 
  margin 
  of 
  the 
  hand, 
  the 
  length 
  

   of 
  which 
  it 
  slightly 
  exceeds 
  ; 
  hand 
  in 
  the 
  form 
  of 
  a 
  long 
  

   oblong, 
  w 
  T 
  irh 
  parallel 
  sides, 
  which 
  ai-e 
  not 
  arched, 
  rather 
  more 
  

   than 
  three 
  times 
  as 
  long 
  as 
  broad, 
  palm 
  scarcely 
  at 
  all 
  oblique, 
  

   occupying 
  the 
  distal 
  side 
  of 
  the 
  oblong. 
  Perasopods 
  1-4 
  

   remarkable 
  on 
  account 
  of 
  their 
  terminal 
  joints, 
  densely 
  clothed 
  

   with 
  seta? 
  and 
  slender 
  spines, 
  and 
  the 
  characters 
  of 
  the 
  hand, 
  

   which 
  is 
  densely 
  setose 
  on 
  one 
  margin 
  and 
  furnished 
  within 
  

   the 
  other 
  with 
  a 
  row 
  of 
  minute 
  spinules, 
  and 
  of 
  the 
  nail, 
  which 
  

   is 
  very 
  minute 
  and 
  weak 
  ; 
  the 
  fourth 
  pair 
  (which 
  is 
  figured, 
  

   fig. 
  4) 
  is 
  not 
  so 
  densely 
  setose 
  and 
  spinulose 
  as 
  the 
  first 
  and 
  

   second 
  pairs, 
  and 
  the 
  nail 
  is 
  somewhat 
  larger. 
  Last 
  peraso- 
  

   pods 
  (fig. 
  5) 
  having 
  the 
  basal 
  joint 
  subquadrate, 
  length 
  and 
  

   breadth 
  subequal, 
  front 
  margin 
  bearing 
  spinules, 
  hinder 
  mar- 
  

   gin 
  ciliated, 
  and 
  a 
  few 
  long 
  plumose 
  setas 
  spring 
  from 
  the 
  face 
  ; 
  

   four 
  distal 
  joints 
  subequal 
  in 
  length. 
  Length 
  10 
  millim. 
  

  

  The 
  male 
  differs 
  from 
  the 
  female 
  in 
  having 
  the 
  second 
  and 
  

   third 
  joints 
  of 
  antennules 
  much 
  shorter 
  and 
  the 
  flagellum 
  much 
  

   thickened, 
  the 
  first 
  articulation 
  very 
  long, 
  and 
  densely 
  clothed 
  

   with 
  setas. 
  The 
  antennae 
  have 
  the 
  upper 
  margin 
  of 
  the 
  

   distal 
  joints 
  of 
  peduncle 
  set 
  with 
  transverse 
  rows 
  of 
  minute 
  cilia, 
  

   the 
  flagellum 
  greatly 
  elongated, 
  consisting 
  of 
  70-80 
  articula- 
  

  

  