Icmoirs of l^e ^uscum of Comparatibe ^oologg 



AT HARVARD COLLEGE. 



Vol. XXV. No. 1. 



UINTACRINUS: 



ITS STRUCTURE AND RELATIONS. 



BY 



FRANK SPKI]N^GER. 



WITH EIGHT PLATES. 



CAMBRIDGE, U.S.A.: 



^rintfti for tfjr fHuscum. 

 August, 1901. 



