﻿14 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.67 
  

  

  Siphogenerina 
  dimorpha 
  Egger, 
  Abh. 
  kon. 
  bay. 
  Akad. 
  Wiss. 
  Miinchen, 
  

   CI. 
  II, 
  vol. 
  18, 
  1893, 
  p. 
  317, 
  pi. 
  9, 
  fig. 
  30.— 
  Cushman, 
  Bull. 
  71, 
  U. 
  S. 
  Nat. 
  

   Mus., 
  pt. 
  3, 
  1913, 
  p. 
  106, 
  pi. 
  45, 
  figs. 
  3, 
  4; 
  Bull. 
  100, 
  pt. 
  4, 
  1921, 
  p. 
  279, 
  

   pi. 
  56, 
  fig. 
  8. 
  

  

  Description. 
  — 
  Variety 
  differing 
  from 
  the 
  typical 
  in 
  the 
  greater 
  

   number 
  of 
  uniserial 
  chambers, 
  the 
  cylindrical 
  form 
  of 
  the 
  test, 
  and 
  

   the 
  much 
  more 
  prominent 
  depressions 
  at 
  the 
  base 
  of 
  the 
  chambers 
  

   along 
  the 
  sutures. 
  

  

  Distribution. 
  — 
  This 
  variety 
  is 
  widely 
  distributed 
  in 
  the 
  Pacific. 
  

   Parker 
  and 
  Jones 
  had 
  it 
  from 
  the 
  Red 
  Sea 
  (near 
  the 
  Isle 
  of 
  Shad- 
  

   wan) 
  and 
  Australian 
  coral 
  reefs. 
  Brady 
  had 
  it 
  from 
  off 
  Tahiti, 
  the 
  

   Ki 
  Islands, 
  and 
  off 
  Kandavu, 
  Fiji. 
  It 
  has 
  occurred 
  off 
  the 
  Hawaiian 
  

   Islands 
  (Bagg, 
  Cushman), 
  and 
  I 
  have 
  had 
  it 
  from 
  several 
  stations 
  

   in 
  the 
  western 
  Pacific 
  off 
  Japan 
  and 
  the 
  Bonin 
  Islands, 
  as 
  well 
  as 
  a 
  

   few 
  stations 
  in 
  the 
  Philippines. 
  Sidebottom 
  records 
  it 
  off 
  the 
  eastern 
  

   coast 
  of 
  Australia, 
  and 
  Heron- 
  Allen 
  and 
  Earland 
  from 
  several 
  stations 
  

   off 
  New 
  Zealand. 
  Egger's 
  only 
  station 
  is 
  in 
  the 
  western 
  part 
  of 
  the 
  

   Indian 
  Ocean. 
  

  

  The 
  only 
  fossil 
  records 
  for 
  this 
  area 
  is 
  that 
  of 
  Schubert, 
  who 
  re- 
  

   corded 
  it 
  in 
  a 
  Globigerina 
  marl 
  of 
  late 
  Tertiary 
  age 
  from 
  Panaras 
  in 
  

   the 
  Bismarck 
  Archipelago 
  and 
  Koch, 
  who 
  records 
  it 
  from 
  the 
  late 
  

   Tertiary 
  of 
  Kabu, 
  Java. 
  

  

  It 
  may 
  be 
  noted 
  here 
  that 
  Halkyard 
  records 
  this 
  species 
  as 
  occur- 
  

   ring 
  in 
  the 
  Blue 
  Eocene 
  Marl 
  of 
  Biarritz. 
  12 
  Heron- 
  Allen 
  and 
  Earland 
  

   note: 
  "The 
  specimens 
  are 
  longer, 
  thinner 
  in 
  the 
  shell 
  wall, 
  and 
  the 
  

   cusps 
  between 
  the 
  chambers 
  are 
  much 
  less 
  pronounced 
  than 
  in 
  

   recent 
  types, 
  but 
  in 
  other 
  features 
  they 
  agree 
  tolerably 
  well 
  with 
  

   Sagrina 
  dimorpha 
  Parker 
  and 
  Jones." 
  It 
  would 
  seem, 
  then, 
  as 
  though 
  

   these 
  Eocene 
  specimens 
  may 
  represent 
  a 
  varietal 
  form 
  more 
  closely 
  

   allied 
  to 
  the 
  typical 
  Atlantic 
  form 
  than 
  to 
  the 
  Pacific 
  variety. 
  

  

  SIPHOGENERINA 
  VIRGULA 
  (H. 
  B. 
  Brady) 
  

  

  Plate 
  2, 
  figs. 
  7, 
  8; 
  plate 
  4, 
  figs. 
  8, 
  9 
  

  

  Sagrina 
  virgula 
  H. 
  B. 
  Brady, 
  Quart. 
  Journ. 
  Micr. 
  Sci., 
  vol. 
  19, 
  1879, 
  p. 
  275, 
  

   pi. 
  8, 
  figs. 
  19-21; 
  Rep. 
  Voy. 
  Challenger, 
  Zoology, 
  vol. 
  9, 
  1884, 
  p. 
  533, 
  

   pi. 
  76, 
  figs. 
  4-7 
  (not 
  8-10).— 
  Millett, 
  Journ. 
  Roy. 
  Micr. 
  Soc, 
  1903, 
  

   p. 
  271. 
  — 
  Heron-Allen 
  and 
  Earland, 
  Trans. 
  Zool. 
  Soc. 
  London, 
  vol. 
  

   20, 
  1915, 
  p. 
  676, 
  pi. 
  51, 
  figs. 
  4, 
  5. 
  — 
  Sidebottom, 
  Journ. 
  Roy. 
  Micr. 
  Soc, 
  

   1918, 
  p. 
  148. 
  — 
  Heron-Allen 
  and 
  Earland, 
  British 
  Antarctic 
  (Terra 
  

   Nova) 
  Exped., 
  Zoology, 
  vol. 
  6, 
  1922, 
  p. 
  180. 
  

  

  Siphogenerina 
  (Sagrina) 
  virgula 
  Egger, 
  Abh. 
  kon. 
  Bay. 
  Akad. 
  Wias. 
  Miin- 
  

   chen, 
  CI. 
  II, 
  vol. 
  18, 
  1893, 
  p. 
  318, 
  pi. 
  9, 
  fig. 
  27. 
  

  

  Siphogenerina 
  virgula 
  Cushman, 
  Publ. 
  342, 
  Carnegie 
  Inst. 
  Washington, 
  1924, 
  

   p. 
  29, 
  pi. 
  8, 
  figs. 
  3, 
  4. 
  

  

  Description. 
  — 
  Test 
  elongate, 
  somewhat 
  tapering, 
  composed 
  of 
  a 
  

   number 
  of 
  inflated 
  chambers, 
  the 
  early 
  ones 
  in 
  a 
  uvigerine 
  arrange- 
  

   ment, 
  later 
  ones 
  uniserial, 
  the 
  uniserial 
  portion 
  making 
  up 
  most 
  of 
  

  

  » 
  Mem. 
  Proc. 
  Manchester 
  Lit. 
  Philos. 
  Soc, 
  vol. 
  02, 
  1919, 
  p. 
  39. 
  

  

  