﻿U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS, 
  VOL. 
  67, 
  ART. 
  9 
  PL. 
  21 
  

  

  Unusual 
  Forms 
  of 
  Fossil 
  Crinoids 
  

  

  For 
  explanation 
  of 
  Plate 
  see 
  page 
  128 
  

  

  