Sib o ga- Expeditie 



XLIIb 



THE UNSTALKED CRINOIDS OF THE 

 SIBOGA EXPEDITION 



BY 



AUSTIN H. CLARK 



Washington, D. C, U. S. A. 



With XXVIII plates and 17 text figures 



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late E. J. BRILL 



PÜBLISHERS AND PRINTERS 



LEYDEN 191 S 



