﻿308 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.98 
  

  

  PYCNOGONUM 
  BUTICULOSUM, 
  new 
  species 
  

  

  Figure 
  48, 
  a; 
  Figure 
  50, 
  a, 
  h 
  

  

  Types. 
  — 
  Holotype 
  (male) 
  : 
  U.S.N.M. 
  No. 
  80571, 
  Albatross 
  shore 
  

   trip, 
  June 
  23, 
  1906, 
  Milne 
  Bay, 
  Simushiru. 
  

  

  Paratypes 
  (4 
  males, 
  2 
  females) 
  : 
  Same 
  locality. 
  

  

  Description. 
  — 
  Trunk 
  fat, 
  compact, 
  and 
  broad. 
  Lateral 
  processes 
  

   narrowly 
  separated. 
  The 
  posterior 
  dorsal 
  margin 
  of 
  the 
  first 
  three 
  

  

  Figure 
  SO. 
  — 
  a, 
  b, 
  Pycnogonum 
  buticulosum, 
  new 
  species: 
  a, 
  Third 
  leg; 
  h, 
  oviger. 
  c,d, 
  P. 
  

   tenue 
  Slater: 
  c. 
  Third 
  leg; 
  d, 
  oviger. 
  e-g, 
  P. 
  ungellatum 
  Loman: 
  e, 
  Third 
  leg; 
  /, 
  detail 
  

   of 
  terminal 
  and 
  auxiliary 
  claws; 
  g, 
  oviger. 
  

  

  trunk 
  segments 
  is 
  raised 
  in 
  a 
  ridge, 
  at 
  the 
  center 
  of 
  which 
  is 
  a 
  prom- 
  

   inent 
  rounded 
  tubercle, 
  and 
  there 
  is 
  also 
  a 
  ridge 
  on 
  the 
  dorsodistal 
  

   margin 
  of 
  the 
  lateral 
  processes. 
  There 
  is 
  a 
  smaller 
  tubercle 
  on 
  the 
  

   last 
  trunk 
  segment, 
  without 
  such 
  a 
  prominent 
  ridge. 
  The 
  eye 
  tubercle 
  

   is 
  rounded, 
  about 
  as 
  high 
  as 
  the 
  dorsal 
  trunk 
  tubercles, 
  with 
  prom- 
  

   inent 
  eyes. 
  Integument 
  granular, 
  in 
  some 
  specimens 
  also 
  lightly 
  

   reticulated. 
  

  

  Proboscis 
  slightly 
  more 
  than 
  half 
  as 
  long 
  as 
  trunk, 
  nipple- 
  or 
  bottle- 
  

   shaped. 
  

  

  