﻿U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS, 
  VOL. 
  67, 
  ART. 
  21 
  PL. 
  15 
  

  

  Lower 
  Cretaceous 
  Cyclostomatous 
  Bryozoa 
  

  

  EXPLANATION 
  OF 
  PLATE 
  SEE 
  PAGE 
  108 
  

  

  