﻿452 
  Eev. 
  A. 
  M. 
  Norman's 
  Notes 
  on 
  British 
  Amphipoda, 
  

  

  Banff 
  (T, 
  Edward) 
  : 
  Mus. 
  Norm. 
  Off 
  the 
  Scilly 
  Islands 
  (D. 
  

   Robertson 
  and 
  G. 
  S. 
  Brady). 
  

  

  Distribution. 
  Southern 
  Norway 
  (G. 
  0. 
  Sars) 
  : 
  Mus. 
  Norm. 
  

   South-west 
  France 
  (Chevreauw). 
  

  

  Animal 
  white, 
  pellucid. 
  Rostrum 
  (fig. 
  6) 
  very 
  short, 
  not 
  

   hooded, 
  extremity 
  blunt, 
  closely 
  appressed 
  to 
  first 
  joint 
  of 
  

   antennules, 
  and 
  not 
  equal 
  to 
  half 
  its 
  length. 
  Eye 
  very 
  large. 
  

   and 
  of 
  unusual 
  form 
  in 
  the 
  genus, 
  situated 
  at 
  base 
  of 
  rostrum, 
  

   and 
  extending 
  thence 
  down 
  the 
  side 
  of 
  the 
  head 
  round 
  the 
  

   base 
  of 
  the 
  antennules, 
  its 
  colour 
  brilliant 
  blood-red, 
  lenses 
  

   indistinct. 
  Antennules 
  ( 
  ? 
  ) 
  with 
  peduncle 
  much 
  longer 
  than 
  

   that 
  of 
  antennas, 
  first 
  joint 
  rather 
  more 
  than 
  twice 
  as 
  long 
  as 
  

   broad, 
  second 
  joint 
  longer, 
  third 
  still 
  longer 
  and 
  very 
  slender 
  ; 
  

   flagellum 
  about 
  six-jointed. 
  Antennas 
  with 
  last 
  two 
  joints 
  of 
  

   peduncle 
  short 
  and 
  subequal. 
  Gnathopods 
  (figs. 
  7 
  and 
  8) 
  of 
  

   nearly 
  the 
  same 
  form 
  in 
  both 
  pair 
  ; 
  no 
  produced 
  calx 
  to 
  meros 
  ; 
  

   wrist 
  produced 
  into 
  a 
  long 
  linear 
  calx, 
  projected 
  forward 
  

   parallel 
  with 
  the 
  hand, 
  and 
  in 
  the 
  first 
  pair 
  extending 
  

   markedly 
  beyond 
  the 
  commencement 
  of 
  the 
  palm, 
  in 
  second 
  

   pair 
  longer 
  still 
  and 
  exceeding 
  in 
  length 
  the 
  whole 
  hand 
  ; 
  

   hand 
  greatly 
  elongated, 
  gently 
  arched 
  above 
  in 
  the 
  first, 
  

   nearly 
  straight 
  in 
  second 
  ; 
  length 
  in 
  second 
  pair 
  about 
  five 
  

   times 
  the 
  breadth, 
  palm 
  moderately 
  oblique 
  ; 
  basos 
  of 
  second 
  

   pair 
  much 
  longer 
  than 
  that 
  of 
  first, 
  the 
  whole 
  limb 
  being 
  more 
  

   produced. 
  Anterior 
  perseopods 
  with 
  broad 
  hand, 
  the 
  little 
  

   nail, 
  which 
  is 
  not 
  half 
  its 
  length, 
  attached 
  at 
  lower 
  corner 
  of 
  

   the 
  extremity, 
  and 
  from 
  above 
  it 
  springs 
  a 
  dense 
  brush 
  of 
  long 
  

   seta?. 
  Last 
  peraeopods 
  (fig. 
  9) 
  very 
  long, 
  extending 
  greatly 
  

   beyond 
  the 
  uropods, 
  four 
  last 
  joints 
  subequal, 
  the 
  nail 
  being 
  

   exceedingly 
  long 
  and 
  slender. 
  Telson 
  obovate, 
  widely 
  rounded 
  

   at 
  the 
  extremity. 
  Length 
  3-4 
  millim. 
  

  

  Chevreaux 
  has 
  accurately 
  figured 
  the 
  heads 
  of 
  the 
  two 
  sexes. 
  

   The 
  male 
  differs 
  from 
  the 
  female 
  in 
  having 
  the 
  last 
  two 
  joints 
  

   of 
  the 
  peduncle 
  of 
  the 
  antennules 
  shorter 
  than 
  the 
  first 
  joint 
  

   and 
  the 
  first 
  articulation 
  of 
  the 
  flagellum 
  greatly 
  developed, 
  

   very 
  long, 
  and 
  densely 
  ciliated, 
  while 
  the 
  antennas 
  have 
  not 
  

   the 
  upper 
  margin 
  of 
  two 
  distal 
  joints 
  of 
  peduncle 
  covered 
  with 
  

   minute 
  cilia 
  (as 
  is 
  usual 
  in 
  males 
  of 
  this 
  genus), 
  but 
  the 
  fla- 
  

   gellum 
  is, 
  as 
  usual, 
  greatly 
  elongated. 
  

  

  My 
  friend 
  Mr. 
  Robertson 
  and 
  myself 
  have 
  taken 
  the 
  males 
  

   of 
  this 
  species 
  by 
  means 
  of 
  the 
  tow-net 
  worked 
  at 
  night. 
  

  

  Mr. 
  D. 
  Robertson 
  has 
  given 
  in 
  his 
  excellent 
  'Catalogue 
  of 
  

   the 
  Amphipoda 
  and 
  Isopoda 
  of 
  the 
  Firth 
  of 
  Clyde 
  ' 
  the 
  name 
  

   Monocalodes 
  aiquimanus, 
  Norman 
  MS., 
  a 
  name 
  by 
  which 
  I 
  

   distinguished 
  this 
  species 
  in 
  my 
  collection 
  and 
  which 
  I 
  

   gave 
  him 
  before 
  it 
  was 
  described 
  by 
  Bate 
  and 
  Westwood. 
  

  

  