﻿U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS, 
  VOL. 
  67, 
  ART. 
  21 
  PL. 
  25 
  

  

  •5304S— 
  20- 
  

  

  Lower 
  Cretaceous 
  Cyclostomatous 
  Bryozoa 
  

  

  For 
  explanation 
  of 
  plate 
  see 
  page 
  118 
  

   -10 
  

  

  