Bulletin of the Museum of Comparative Zoology 

 AT HARVARD COLLEGE. 



Vol. LI. No. 2. 



THE STARFISHES OF THE GENUS HELIASTER. 



By Hubert Lyman Clark. 



With Eight Plates. 



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



PRINTED FOR THE MUSEUM. 



June, 1907. 



