• OCT 24 1899 



Bulletin of the Museum of Comparative Zoology 

 AT HARVARD COLLEGE. 



Vol. XXXV. No. 4. 



OVOGENESIS IN DISTAPLIA OCCIDENTALS RITTEK 

 (MS.), WITH REMARKS ON OTHER SPECIES. 



By Frank W. Bancroft. 



With Six Plates. 



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



l'RINTED FOR THE MUSEUM. 

 October, 1899. 



