ZOOLOGICA 



SCIENTIFIC CONTRIBUTIONS OF THE 

 NEW YORK ZOOLOGICAL SOCIETY 



VOLUME I, NUMBER 20. 



SOME NEW SPECIES 

 OF 



ECTOPARASITIC TREMATODES 



By G. a. MacCallum, M.D. 

 Department of Pathology, 



COLUMBIA UNIVERSITY, NEW YORK. 



PUBLISHED BY THE SOCIETY 



THE ZOOLOGICAL PARK, NEW YORK 



June, 1915 



