﻿BIHANG 
  TILL 
  K. 
  SV. 
  VET. 
  AKAD. 
  HANDL. 
  BAND. 
  6. 
  N:0 
  é. 
  5 
  

  

  peculiarity 
  of 
  the 
  animal 
  is, 
  however, 
  the 
  gradual 
  develop- 
  

   raent 
  of 
  its 
  pleopoda 
  into 
  respiratory 
  organs. 
  

  

  lanthe 
  speciosa, 
  n. 
  s. 
  

  

  Cephalon 
  rostro 
  brevius, 
  cornua 
  lateralia 
  ferens. 
  

  

  Äntennce 
  interiores 
  externis 
  multo 
  breviores. 
  

  

  Segmenta 
  pereii 
  spinas 
  dorsales 
  ferentia 
  binas. 
  

  

  Latera 
  segmentorum 
  dilatata, 
  valde 
  incisa, 
  cornua 
  formant. 
  

  

  Pleon 
  convexum 
  spinam 
  unicam 
  ferens. 
  

  

  Uropoda 
  ultima 
  lamellis 
  infequalibus 
  pedunculis 
  brevioribus. 
  

  

  Cephalon 
  sborter 
  tlian 
  rostrum, 
  tlie 
  lateral 
  margins 
  

   produced 
  into 
  flat 
  horns 
  directed 
  forwards. 
  

  

  Inner 
  Antennee 
  much 
  shorter 
  than 
  the 
  outer. 
  

  

  Every 
  segment 
  of 
  the 
  pereion 
  carrying 
  dorsally 
  two 
  

   short 
  spines. 
  

  

  Pleon 
  convex 
  with 
  one 
  median 
  dorsal 
  spine. 
  

  

  The 
  last 
  Uropoda 
  with 
  inaaqual 
  rami, 
  which 
  are 
  shorter 
  

   than 
  the 
  peduncles. 
  

  

  The 
  body 
  is 
  convex, 
  arched, 
  ovato-oblong. 
  

  

  The 
  cephalon 
  is 
  longer 
  than 
  the 
  following 
  segment, 
  but 
  

   somewhat 
  narrower, 
  v/ith 
  the 
  anterior 
  part 
  produced 
  into 
  a 
  long 
  

   sharp 
  rostrum, 
  finely 
  denticulated 
  at 
  the 
  upper 
  margins. 
  The 
  

   rostrum 
  is 
  longer 
  by 
  a 
  fourth 
  than 
  the 
  cephalon; 
  the 
  lateral 
  

   margins 
  of 
  the 
  cephalon 
  are 
  produced 
  into 
  long 
  flat 
  horns, 
  

   finely 
  denticulated 
  at 
  the 
  margins, 
  directed 
  forwards, 
  giving 
  

   the 
  cephalon 
  the 
  appearance 
  of 
  being 
  trilobate. 
  The 
  upper 
  

   side 
  of 
  the 
  cephalon 
  is 
  highly 
  convex 
  (Pl. 
  I, 
  fig. 
  1), 
  the 
  

   surface 
  finely 
  granulated 
  and 
  provided 
  with 
  a 
  few, 
  short, 
  

   simple 
  hairs. 
  The 
  frontal 
  margins 
  are 
  arched. 
  

  

  The 
  segments 
  of 
  the 
  pereion 
  are 
  subsequal 
  in 
  length, 
  

   their 
  breadth 
  increasing 
  to 
  the 
  fourth 
  segment, 
  then 
  decreasing 
  

   to 
  the 
  pleon 
  (Pl. 
  I, 
  fig. 
  1). 
  They 
  are 
  very 
  convex, 
  every 
  

   one 
  carrying 
  transversally 
  two 
  dorsal 
  spines 
  of 
  a 
  conical 
  

   form. 
  On 
  the 
  first, 
  second, 
  third, 
  and 
  fourth 
  segments, 
  these 
  

   are 
  situated 
  at 
  the 
  anterior 
  margin, 
  on 
  the 
  the 
  fifth, 
  sixth, 
  

   and 
  seventh 
  at 
  the 
  posterior 
  margin. 
  The 
  surface 
  is 
  granu- 
  

   lated 
  and 
  has 
  some 
  transversal 
  furrows. 
  The 
  lateral 
  margins 
  

   are 
  much 
  dilated 
  and 
  deeply 
  incised, 
  forming 
  flat, 
  sharp 
  

   cornua; 
  the 
  first 
  segment 
  forms 
  one 
  on 
  each 
  side, 
  directed 
  

   forwards, 
  the 
  second 
  and 
  third 
  two 
  cornua 
  directed 
  forwards» 
  

   the 
  fourth 
  two 
  directed 
  outwards, 
  and 
  the 
  fifth, 
  sixth, 
  and 
  

  

  