﻿PYCNOGONIDA. 
  325 
  

  

  the 
  ovigerous 
  legs, 
  Maudibles 
  2-jointed, 
  the 
  chelate 
  terminal 
  joint 
  

   inserted 
  not 
  laterally, 
  but 
  at 
  the 
  distal 
  extremity 
  of 
  the 
  preceding 
  

   joint. 
  Ovigerous 
  legs 
  10- 
  jointed. 
  The 
  legs 
  (but 
  not 
  the 
  mandibles) 
  

   are 
  armed 
  with 
  strong 
  conical 
  spines, 
  and 
  bear 
  two 
  long 
  axixiliary 
  

   claws 
  besides 
  the 
  normal 
  claw. 
  

  

  Length 
  of 
  the 
  rostrum, 
  a 
  little 
  over 
  2 
  millim. 
  

  

  Length 
  of 
  the 
  body 
  (without 
  rostrum 
  and 
  abdo- 
  

   men) 
  nearly 
  3 
  ,, 
  

  

  Length 
  of 
  the 
  abdomen 
  about 
  1"5 
  „ 
  

  

  Length 
  of 
  leg 
  of 
  the 
  first 
  pair 
  about 
  21 
  ,, 
  

  

  The 
  body 
  is 
  moderately 
  robust 
  (as 
  in 
  P. 
  Jluminense), 
  with 
  the 
  leg- 
  

   bearing 
  processes 
  nearly 
  in 
  contact 
  at 
  their 
  bases 
  ; 
  the 
  articulations 
  

   of 
  the 
  segments 
  of 
  the 
  bodj^ 
  are 
  discernible 
  only 
  ou 
  the 
  ventral 
  

   surface. 
  The 
  cephalothoracic 
  segment 
  is 
  about 
  as 
  long 
  as 
  the 
  three 
  

   following 
  segments 
  taken 
  together, 
  and 
  of 
  these 
  latter 
  the 
  first 
  is 
  a 
  

   little 
  shorter 
  than 
  the 
  second 
  or 
  third. 
  The 
  proboscis, 
  as 
  in 
  P. 
  

   insir/iie, 
  is 
  inserted 
  ventrally, 
  far 
  back 
  between 
  the 
  bases 
  of 
  the 
  two 
  

   ovigerous 
  le 
  s, 
  and, 
  as 
  in 
  that 
  species, 
  is 
  very 
  slightly 
  swollen 
  at 
  the 
  

   base, 
  in 
  the 
  middle, 
  and 
  at 
  the 
  distal 
  extremity 
  ; 
  the 
  mouth 
  is 
  small 
  

   and 
  triangulate, 
  and 
  is 
  margined 
  by 
  three 
  slight 
  protuberances. 
  

   The 
  abdomen 
  is 
  slender, 
  longer 
  than 
  in 
  P. 
  insigne, 
  and 
  directed 
  

   upwards. 
  

  

  The 
  oculiferous 
  tubercle 
  is 
  conical, 
  subacute, 
  with 
  four 
  dark 
  eyes. 
  

   Immediately 
  behind 
  it 
  the 
  cephalothoracic 
  segment 
  is 
  marked 
  by 
  a 
  

   median 
  longitudinal 
  depression, 
  extending 
  along 
  nearly 
  its 
  whole 
  

   length. 
  The 
  basal 
  joints 
  of 
  ttie 
  mandibles 
  are 
  but 
  slightly 
  divergent 
  

   and 
  extend 
  considerably 
  beyond 
  the 
  front 
  of 
  the 
  proboscis 
  ; 
  they 
  

   have 
  no 
  indication 
  of 
  the 
  acute 
  process 
  characteristic 
  of 
  P. 
  insigne 
  

   and 
  bear 
  the 
  second 
  joints, 
  which 
  are 
  about 
  half 
  as 
  long 
  as 
  the 
  

   first, 
  at 
  their 
  distal 
  extremities 
  ; 
  the 
  pincers 
  are 
  smooth 
  on 
  their 
  

   inner 
  surfaces. 
  The 
  basal 
  joints 
  are 
  nearly 
  glabrous. 
  The 
  second 
  

   joints 
  and 
  the 
  pincers 
  at 
  base 
  are 
  clothed 
  with 
  fine 
  hairs, 
  which 
  

   are 
  most 
  abundant 
  on 
  the 
  under 
  surface 
  of 
  the 
  second 
  joint. 
  

  

  The 
  ovigerous 
  legs 
  are 
  inserted 
  on 
  either 
  side 
  of 
  the 
  base 
  of 
  the 
  

   proboscis 
  and 
  are 
  10-jointed 
  ; 
  the 
  first 
  and 
  third 
  joints 
  are 
  short, 
  

   the 
  second 
  a 
  little 
  longer, 
  the 
  fourth 
  and 
  fifth 
  still 
  longer 
  and 
  of 
  nearly 
  

   equal 
  length, 
  but 
  the 
  fourth 
  is 
  somewhat 
  thickened, 
  the 
  sixth 
  about 
  

   as 
  long 
  as 
  the 
  second, 
  the 
  seventh 
  to 
  tenth 
  small, 
  the 
  tenth 
  minute 
  ; 
  

   the 
  last 
  five 
  joints 
  are 
  clothed 
  with 
  fine 
  hairs. 
  

  

  The 
  first 
  joint 
  of 
  the 
  legs 
  is 
  small, 
  nearly 
  as 
  long 
  as 
  the 
  lateral 
  

   process, 
  the 
  second 
  more 
  than 
  twice 
  as 
  long 
  as 
  the 
  first, 
  the 
  third 
  

   about 
  half 
  as 
  long 
  as 
  the 
  second 
  ; 
  the 
  fourth 
  is 
  about 
  as 
  long 
  as 
  the 
  

   three 
  preceding 
  joints 
  taken 
  together 
  ; 
  the 
  fifth 
  slenderer 
  and 
  a 
  

   little 
  longer 
  than 
  the 
  fourth 
  ; 
  the 
  sixth 
  also 
  slenderer 
  and 
  about 
  as 
  

   long 
  as 
  the 
  fourth 
  ; 
  the 
  seventh 
  is 
  very 
  short 
  ; 
  the 
  eighth 
  slightly 
  

   curved 
  and 
  longer 
  than 
  the 
  first, 
  but 
  not 
  as 
  long 
  as 
  the 
  second 
  joint. 
  

   The 
  first 
  joint 
  of 
  the 
  leg 
  bears, 
  at 
  the 
  distal 
  extremity 
  of 
  its 
  upper 
  

   surface, 
  one 
  or 
  two 
  small 
  conical 
  spinulcs 
  or 
  protuberances, 
  and 
  at 
  the 
  

  

  