Bulletin of the Museum of Comparative Zoology 

 AT HARVARD COLLEGE. 



Vol. XXXV. No. 4. 



OVOGENESIS IN DISTAPLIA OCCIDENTALS RITTER 

 (MS.), WITH REMARKS ON OTHER SPECIES. 



By Frank W. Bancroft. 



With Six Plates. 



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



PRINTED FOR THE MUSEUM. 

 October, 1899. 



