﻿U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  sua 
  

  

  PROCEEDINGS, 
  VOL. 
  67, 
  ART. 
  21 
  PL. 
  13 
  

  

  I 
  * 
  

  

  w*> 
  jP 
  *k 
  

  

  It 
  i 
  * 
  ** 
  * 
  

  

  

  •:,<« 
  

  

  

  wh 
  d^r^' 
  

  

  ■ 
  - 
  * 
  ♦ 
  \ 
  

   « 
  

  

  13 
  

  

  Lower 
  Cretaceous 
  Cyclostomatous 
  Bryozoa 
  

  

  For 
  explanation 
  of 
  plate 
  see 
  pace 
  106 
  

  

  