﻿636 
  PROCEEDIXOS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  color, 
  smooth, 
  sutures 
  slightly 
  depressed; 
  aperture 
  small, 
  with 
  a 
  slight 
  

   neck, 
  more 
  marked 
  in 
  the 
  young 
  stages. 
  

  

  Length 
  about 
  3 
  mm. 
  

  

  Type-specimen. 
  — 
  Cat. 
  No. 
  8507. 
  U.S.N. 
  M., 
  from 
  Albatross 
  station 
  

   D5585, 
  vicinity 
  of 
  Sibuko 
  Bay, 
  Borneo, 
  476 
  fathoms. 
  

  

  This 
  species 
  is 
  peculiar 
  in 
  the 
  retarded 
  taking 
  on 
  of 
  the 
  typical 
  

   uniserial 
  character 
  of 
  chamber 
  arrangement 
  and 
  in 
  the 
  length 
  of 
  time 
  

   that 
  the 
  biserial 
  condition 
  is 
  held. 
  In 
  this 
  it 
  is 
  distinctlj" 
  primitive, 
  

   much 
  more 
  so 
  than 
  in 
  any 
  other 
  known 
  species. 
  The 
  early 
  triserial 
  

   condition, 
  on 
  the 
  other 
  hand, 
  is 
  not 
  much 
  longer 
  held 
  than 
  in 
  some 
  

   other 
  species 
  of 
  the 
  genus. 
  The 
  figure 
  of 
  a 
  young 
  specimen 
  shows 
  

   the 
  tvpical 
  clavuline 
  neck 
  even 
  while 
  the 
  biserial 
  condition 
  is 
  still 
  

   held.^ 
  

  

  GAUDRYINA 
  ATTENUATA, 
  new 
  species. 
  

   Plate 
  SO, 
  fig. 
  ?,. 
  

  

  Description. 
  — 
  Test 
  elongate, 
  composed 
  of 
  numerous 
  chambers, 
  

   early 
  portion 
  triserial, 
  triangular 
  in 
  cross 
  section 
  with 
  sharp 
  angles, 
  

   biserial 
  chambers 
  numerous, 
  nearly 
  as 
  high 
  as 
  broad, 
  in 
  later 
  develop- 
  

   ment 
  each 
  chamber 
  running 
  nearly 
  or 
  quite 
  to 
  the 
  opposite 
  side 
  of 
  

   the 
  test; 
  wall 
  rough, 
  composed 
  of 
  rough 
  sand 
  grains 
  and 
  sponge 
  

   spicules 
  roughly 
  cemented, 
  aperture 
  at 
  first 
  textularian, 
  becoming 
  

   more 
  nearly 
  circular 
  in 
  the 
  last 
  formed 
  chambers; 
  color 
  light 
  gray. 
  

  

  Length 
  about 
  3 
  mm. 
  

  

  Type-specimen. 
  — 
  Cat. 
  No. 
  8508, 
  U.S.N.M., 
  from 
  Albatross 
  station 
  

   D5259, 
  off 
  northwestern 
  Panay, 
  312 
  fathoms. 
  

  

  This 
  species 
  differs 
  from 
  0. 
  fXiformis 
  Berthelin 
  in 
  its 
  sharply 
  tri- 
  

   angular 
  basal 
  portion 
  and 
  in 
  its 
  more 
  loosely 
  biserial 
  form, 
  as 
  well 
  as 
  

   the 
  form 
  of 
  the 
  aperture. 
  It 
  differs 
  from 
  G. 
  pseudofiliformis 
  Cushman 
  

   in 
  the 
  aperture, 
  the 
  very 
  rough 
  surface 
  and 
  more 
  loosely 
  biserial 
  char- 
  

   acter. 
  The 
  apertural 
  end 
  tends 
  to 
  become 
  attenuate 
  but 
  not 
  to 
  

   assume 
  a 
  clavuline 
  character. 
  

  

  GAUDRYINA 
  RCSUSTA, 
  new 
  species. 
  

   Plate 
  78, 
  fig. 
  2. 
  

  

  Description. 
  — 
  Test 
  large, 
  stout, 
  early 
  portion 
  sharply 
  triangular, 
  

   triserial, 
  later 
  chambers 
  biserial, 
  rounded; 
  wall 
  made 
  up 
  of 
  fine 
  sand 
  

   grayish 
  in 
  color, 
  with 
  numerous 
  black 
  specks; 
  surface 
  somewhat 
  

   rugose, 
  sutures 
  shghtly 
  depressed, 
  sides 
  of 
  early 
  portion 
  somewhat 
  

   concave; 
  aperture 
  textularian, 
  in 
  a 
  rather 
  deep 
  reentrant 
  of 
  the 
  

   inner 
  border 
  of 
  the 
  chamber. 
  

  

  Length 
  4 
  mm., 
  breadth 
  2 
  mm. 
  

  

  Type-specimen. 
  — 
  Cat. 
  No. 
  8509, 
  U.S.N.M., 
  from 
  Albatross 
  station 
  

   D5612, 
  Gulf 
  of 
  Tomini, 
  Celebes, 
  750 
  fathoms. 
  

  

  This 
  is 
  a 
  large 
  species, 
  very 
  robustly 
  built, 
  the 
  early 
  portion 
  con- 
  

   cavely 
  triangular, 
  the 
  later 
  portion 
  very 
  much 
  rounded. 
  The 
  

   specimen 
  figured 
  shows 
  but 
  a 
  few 
  of 
  the 
  biserial 
  chambers. 
  

  

  