

Bulletin of the Museum of Comparative Zoology 

 AT HARVARD COLLEGE. 



Vol. XLVIII. No. 4. 



STUDIES ON THE NUCLEAR CYCLE OF GONIONEMUS 

 MURBACHII A. G. MAYER. 



By Henry B. Bigelow. 



With Eight Plates. 



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



PRINTED FOR THE MUSEUM. 



December, 1907. 



