^11^ 



Bulletin of the Museum of Compariutive Zooiogj 



AT HARVARD COLLEGE. 



Vol. LXI. No. 9. 



NEW BLASTOIDS AND BRACHIOPODS FROM THE 

 ROCKY MOUNTAINS. 



Bv Thomas H. Clark. 



With Two Plates. 



CAMBRIDGE, MASS., U. S. A.: 



PRINTED FOR THE MUSEUM. 



August, 1917. 



