﻿ADVERTISEMENT. 
  

  

  The 
  scientific 
  publications 
  of 
  the 
  National 
  Museum 
  consist 
  of 
  two 
  

   series 
  — 
  Proceedings 
  and 
  Bulletins. 
  

  

  The 
  Proceedings, 
  the 
  first 
  volume 
  of 
  which 
  was 
  issued 
  in 
  1878, 
  are 
  

   intended 
  primarily 
  as 
  a 
  medium 
  for 
  the 
  publication 
  of 
  original 
  papers 
  

   based 
  on 
  the 
  collections 
  of 
  the 
  National 
  Museum, 
  setting 
  fortli 
  newly- 
  

   acquired 
  facts 
  in 
  biology, 
  anthropology, 
  and 
  geology 
  derived 
  there- 
  

   from, 
  or 
  containing 
  descriptions 
  of 
  new 
  forms 
  and 
  revisions 
  of 
  limited 
  

   groups. 
  A 
  volume 
  is 
  issued 
  annually 
  or 
  oftener 
  for 
  distribution 
  to 
  

   libraries 
  and 
  scientific 
  estabhshments, 
  and, 
  in 
  view 
  of 
  the 
  importance 
  

   of 
  the 
  more 
  prompt 
  dissemination 
  of 
  new 
  facts, 
  a 
  limited 
  edition 
  of 
  

   each 
  paper 
  is 
  printed 
  in 
  pamphlet 
  form 
  in 
  advance. 
  The 
  dates 
  at 
  

   wliich 
  these 
  separate 
  papers 
  are 
  published 
  are 
  recorded 
  in 
  the 
  table 
  

   of 
  contents 
  of 
  the 
  volume. 
  

  

  The 
  present 
  volume 
  is 
  the 
  forty-fourth 
  of 
  this 
  series. 
  

  

  The 
  Bulletin, 
  publication 
  of 
  which 
  was 
  begun 
  in 
  1875, 
  is 
  a 
  series 
  of 
  

   more 
  elaborate 
  papers, 
  issued 
  separately, 
  and, 
  like 
  the 
  Proceedings, 
  

   based 
  chiefly 
  on 
  the 
  collections 
  of 
  the 
  National 
  Museum. 
  

  

  A 
  quarto 
  form 
  of 
  the 
  Bulletin, 
  known 
  as 
  the 
  "Special 
  Bulletin," 
  

   has 
  been 
  adopted 
  in 
  a 
  few 
  instances 
  in 
  which 
  a 
  larger 
  page 
  was 
  deemed 
  

   indispensable. 
  

  

  Since 
  1902 
  the 
  volumes 
  of 
  the 
  series 
  known 
  as 
  "Contributions 
  from 
  

   the 
  National 
  Herbarium," 
  and 
  containing 
  papers 
  relating 
  to 
  the 
  botan- 
  

   ical 
  collections 
  of 
  the 
  Museum, 
  have 
  been 
  published 
  as 
  Bulletins. 
  

  

  Richard 
  Rathbun, 
  

   Assistant 
  Secretary, 
  Smithsonian 
  Institution, 
  

   In 
  charge 
  of 
  the 
  United 
  States 
  National 
  Museum. 
  

  

  June 
  16, 
  1913. 
  

  

  