﻿20 
  PROCEEDINGS 
  OP 
  THE 
  NATIONAL 
  MUSEUM 
  vol.67 
  

  

  PAVONINA 
  FLABELLIFORMIS 
  d'Orbigny 
  

  

  Plate 
  6, 
  figs. 
  1-4 
  

  

  Pavonina 
  flabelliformis 
  d'Orbigny, 
  Ann. 
  Sci. 
  Nat., 
  vol. 
  7, 
  1826, 
  p. 
  260, 
  

   pi. 
  10, 
  figs. 
  10, 
  11; 
  For. 
  Foss. 
  Vienne, 
  1846, 
  p. 
  72, 
  pi. 
  21, 
  figs. 
  9, 
  10.— 
  

   Parker, 
  Jones, 
  and 
  H. 
  B. 
  Brady, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  ser. 
  3, 
  vol. 
  16, 
  

   1865, 
  p. 
  27, 
  pi. 
  1, 
  fig. 
  22.— 
  H. 
  B. 
  Brady, 
  Quart. 
  Journ. 
  Micr. 
  Sci., 
  vol. 
  

   19, 
  1879, 
  p. 
  282, 
  pi. 
  8, 
  figs. 
  29, 
  30.— 
  Mobius, 
  Beitr. 
  Meeresfauna 
  Insel 
  

   Mauritius, 
  1880, 
  p. 
  91, 
  pi. 
  8, 
  figs. 
  13-15.— 
  H. 
  B. 
  Brady, 
  Rep. 
  Voy. 
  

   Challenger, 
  Zoology, 
  vol. 
  9, 
  1884, 
  p. 
  374, 
  pi. 
  45, 
  figs. 
  17, 
  19-22 
  (not 
  18).— 
  

   Millett, 
  Journ. 
  Roy. 
  Micr. 
  Soc, 
  1900, 
  p. 
  7. 
  — 
  Bagg, 
  Proc. 
  U. 
  S. 
  Nat. 
  

   Mus., 
  vol. 
  34, 
  1908, 
  p. 
  132.— 
  Cushman, 
  Bull. 
  71, 
  U. 
  S. 
  Nat. 
  Mus., 
  pt. 
  2, 
  

   1911, 
  p. 
  30, 
  figs. 
  51, 
  52 
  (in 
  text). 
  — 
  Heron-Allen 
  and 
  Earland, 
  Trans. 
  

   Zool. 
  Soc. 
  London, 
  vol. 
  20, 
  1915, 
  p. 
  632, 
  pi. 
  48, 
  figs. 
  1-6; 
  Journ. 
  Linn. 
  

   Soc. 
  Zool., 
  vol. 
  35, 
  1924, 
  p. 
  619; 
  Journ. 
  Roy. 
  Micr. 
  Soc, 
  1924, 
  p. 
  141, 
  pi. 
  

   8, 
  fig. 
  22. 
  

  

  Pavonina 
  flabelloides 
  Bronn, 
  Klassen 
  und 
  Ordnungen 
  Thier-Reichs, 
  vol. 
  1, 
  

   1859, 
  p. 
  72, 
  pi. 
  6, 
  figs. 
  13a, 
  b. 
  — 
  Butschli, 
  in 
  Bronn, 
  Klassen 
  und 
  Ord- 
  

   nungen 
  Thier-Reichs, 
  vol. 
  1, 
  1880, 
  p. 
  204, 
  pi. 
  18, 
  fig. 
  13. 
  

  

  Description. 
  — 
  Test 
  free, 
  many-chambered, 
  much 
  compressed, 
  the 
  

   early 
  portion 
  consisting 
  of 
  a 
  few 
  small 
  chambers 
  arranged 
  biserially, 
  

   the 
  later 
  chambers 
  curved, 
  spreading, 
  uniserial 
  or 
  divided 
  into 
  more 
  

   than 
  one 
  in 
  each 
  curve, 
  in 
  adults 
  often 
  with 
  the 
  chambers 
  becoming 
  

   almost 
  annular; 
  sutures 
  somewhat 
  limbate, 
  depressed, 
  distinct; 
  wall 
  

   thin 
  and 
  transparent, 
  coarsely 
  and 
  irregularly 
  punctate, 
  the 
  wall 
  

   about 
  these 
  punctae 
  often 
  thickened 
  and 
  slightly 
  raised; 
  apertures 
  

   in 
  one 
  or 
  more 
  linear 
  rows 
  about 
  the 
  periphery 
  of 
  the 
  test, 
  the 
  periph- 
  

   eral 
  face 
  concave; 
  color 
  white. 
  

  

  The 
  diameter 
  of 
  the 
  test 
  rarely 
  exceeds 
  1 
  mm. 
  

  

  The 
  species 
  has 
  an 
  interesting 
  distribution. 
  The 
  early 
  specimens 
  

   of 
  d'Orbigny 
  were 
  from 
  Madagascar. 
  It 
  is 
  apparently 
  most 
  abundant 
  

   in 
  that 
  general 
  region 
  as 
  Heron-Allen 
  and 
  Earland 
  record 
  it 
  very 
  

   splendidly 
  developed 
  in 
  the 
  Kerimba 
  Archipelago 
  nearby. 
  Brady's 
  

   records 
  of 
  this 
  species 
  are 
  " 
  Madagascar, 
  shore 
  sand; 
  Seychelle 
  

   Islands, 
  shallow 
  water; 
  Port 
  Louis, 
  Mauritius, 
  harbor 
  mud; 
  off 
  

   Calpentyn, 
  Ceylon, 
  2 
  fathoms; 
  off 
  Raine 
  Island, 
  Torres 
  Strait, 
  155 
  

   fathoms; 
  Nares 
  Harbor, 
  Admiralty 
  Islands, 
  17 
  fathoms; 
  and 
  Hono- 
  

   lulu 
  Reefs, 
  40 
  fathoms." 
  He 
  records 
  it 
  also 
  from 
  Millet's 
  collection 
  

   from 
  the 
  coast 
  of 
  Korea. 
  Moebius 
  had 
  material 
  from 
  Mauritius. 
  

   Millett 
  records 
  a 
  solitary 
  specimen 
  from 
  his 
  Malay 
  Archipelago 
  col- 
  

   lections. 
  Bagg 
  had 
  it 
  from 
  Albatross 
  station 
  D 
  4174, 
  off 
  the 
  Hawaiian 
  

   Islands, 
  and 
  I 
  have 
  had 
  it 
  from 
  Nero 
  station 
  2042 
  in 
  55 
  fathoms, 
  also 
  

   off 
  Honolulu, 
  Nero 
  station 
  201, 
  in 
  1,033 
  fathoms 
  near 
  Midway 
  Island, 
  

   and 
  station 
  1310 
  in 
  518 
  fathoms, 
  near 
  the 
  Bonin 
  Islands. 
  There 
  is 
  

   a 
  single 
  specimen 
  in 
  Tanager 
  collections 
  from 
  31 
  fathoms 
  off 
  Dowsett 
  

   Reef, 
  to 
  the 
  northwestward 
  of 
  the 
  Hawaiian 
  Islands. 
  Heron- 
  Allen 
  

   and 
  Earland 
  record 
  it 
  from 
  Lord 
  Howe 
  Island 
  in 
  the 
  South 
  Pacific. 
  

  

  