﻿NO. 
  1973. 
  PHILIPPINE 
  ARENACEOUS 
  F0RAMINIFERA—CV8HMAN. 
  635 
  

  

  continues 
  this 
  form 
  for 
  some 
  time, 
  finally 
  broadening 
  out 
  somewhat. 
  

   The 
  megalospheric 
  form 
  starts 
  almost 
  at 
  once 
  to 
  develop 
  a 
  broad 
  

   test 
  of 
  fewer 
  chambers, 
  but 
  each 
  has 
  the 
  same 
  characteristic 
  shape 
  

   of 
  the 
  chambers. 
  

  

  BOLIVINA 
  SCULPTURATA, 
  new 
  species. 
  

   Plate 
  80, 
  fig. 
  2. 
  

  

  Description. 
  — 
  Test 
  flattened, 
  rhomboid, 
  chambers 
  nearly 
  fiat 
  on 
  

   the 
  surface, 
  the 
  borders 
  raised 
  with 
  a 
  rounded 
  rim, 
  as 
  are 
  also 
  the 
  areas 
  

   above 
  the 
  sutures, 
  proximal 
  end 
  rounded, 
  distal 
  end 
  tending 
  to 
  

   become 
  uniserial; 
  aperture 
  on 
  the 
  terminal 
  face 
  of 
  the 
  last 
  formed 
  

   chamber, 
  on 
  the 
  inner 
  face 
  of 
  the 
  previously 
  formed 
  ones; 
  wall 
  com- 
  

   posed 
  of 
  finely 
  granular 
  material, 
  yellowish-brown, 
  raised 
  borders 
  of 
  

   a 
  whitish 
  calcareous 
  material. 
  

  

  Length 
  about 
  1 
  mm. 
  

  

  Type-specimen. 
  — 
  Cat. 
  No. 
  8505, 
  U.S.N.M., 
  from 
  Albatross 
  station 
  

   D5236, 
  Pacific 
  Ocean, 
  east 
  coast 
  of 
  Mindanao, 
  494 
  fathoms. 
  

  

  The 
  peculiar 
  ornamentation 
  of 
  this 
  species, 
  with 
  its 
  terminal 
  

   aperture 
  as 
  well 
  as 
  the 
  materials 
  of 
  its 
  construction, 
  make 
  this 
  

   species 
  a 
  distinctive 
  one. 
  

  

  CLAVULINA 
  ROTUND 
  ATA, 
  new 
  species. 
  

   Plate 
  79, 
  fig. 
  3 
  

  

  Description. 
  — 
  Test 
  of 
  comparatively 
  few 
  chambers, 
  tapering, 
  

   apertural 
  end 
  broadly 
  rounded, 
  early 
  portion 
  triserial 
  and 
  conical 
  

   followed 
  by 
  two 
  or 
  three 
  chambers 
  biserially 
  arranged 
  and 
  the 
  last 
  

   formed 
  chambers 
  uniserial; 
  wall 
  thick, 
  composed 
  of 
  fine 
  sand 
  grains 
  

   with 
  a 
  dark 
  reddish-brown 
  cement; 
  smooth; 
  aperture 
  terminal, 
  

   large 
  and 
  rounded, 
  depressed 
  without 
  a 
  neck; 
  color 
  reddish-brown. 
  

  

  Length 
  2.5-3 
  mm. 
  

  

  Type-specimen. 
  — 
  Cat. 
  No, 
  8506, 
  U.S.N.M., 
  from 
  Albatross 
  station 
  

   D5512, 
  off 
  northern 
  Mindanao, 
  445 
  fathoms. 
  

  

  It 
  is 
  not 
  uncommon 
  at 
  this 
  and 
  other 
  stations. 
  

  

  This 
  species 
  is 
  much 
  shorter 
  than 
  most 
  other 
  species 
  of 
  the 
  genus, 
  

   broadly 
  rounded 
  at 
  the 
  apertural 
  end, 
  the 
  wall 
  thick 
  and 
  resembling 
  

   that 
  found 
  in 
  Hormosina 
  and 
  some 
  species 
  of 
  Trocliammina, 
  Ammo- 
  

   discus, 
  etc. 
  The 
  aperture, 
  instead 
  of 
  having 
  a 
  neck, 
  shows 
  rather 
  

   the 
  lack 
  of 
  it, 
  the 
  actual 
  opening 
  into 
  the 
  last 
  formed 
  chamber 
  being 
  

   in 
  a 
  slight 
  depression. 
  

  

  CLAVULINA 
  PRIM^VA, 
  new 
  species. 
  

  

  Plate 
  80, 
  figs. 
  4, 
  5. 
  

  

  Description. 
  — 
  Test 
  elongate, 
  cylindrical, 
  slender, 
  composed 
  of 
  

   numerous 
  chambers; 
  early 
  portion 
  triserial, 
  median 
  portion 
  biserial, 
  

   terminal 
  portion 
  uniserial; 
  chambers 
  high; 
  wall 
  thick, 
  light 
  gray 
  in 
  

  

  