PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM 



issued 



SMITHSONIAN INSTITUTION 

 U. S. NATIONAL MUSEUM 



Vol. 101 Washington : 1951 No. 3274 



THE HELMINTH PARASITES OF BIRDS, III: 



DICROCOELIID TREMATODES FROM 



NORTH AMERICAN BIRDS 



By J. Fred Denton and Elon E. Byrd 



During the past several years we have examined, for helminth 

 parasites, more than 700 specimens of wild birds, which represent 14 

 orders, 40 families, and 134 species. Although the avian hosts came 

 from various localities throughout the southeastern section of the 

 United States, the greater concentrations were collected from State 

 College, Miss. ; Athens and Augusta, Ga. ; Highlands, N. C. ; Reelf oot 

 Lake, Tenn. ; Eagle Lake and Houston, Tex. ; and Mountain Lake, Va. 



In the present paper only those trematodes belonging to the sub- 

 family Dicrocoeliinae Looss, 1899, that were studied by us personally 

 are considered in detail. We collected the greater part of the material 

 included in this study, although we have been fortunate in obtaining 

 specimens of several of the species from other investigators.^ 



^ For the loan of specimens of several species from outside the area covered the writers 

 wish to thank Dr. Paul D. Harwood for material from Tennessee, Dr. Donald V. Moore for 

 material from Texas, Dr. Robert Rausch for specimens from Ohio and Michigan, and 

 Dr. F. G. Wallace for specimens of species collected by Ishii in Minnesota. 



The senior author expresses his appreciation to Prof. Asa C. Chandler, Rice Institute, 

 Houston, Tex., under whose direction this study was begun, for many valuable aids and 

 suggestions. The junior author acknowledges his indebtedness to the Graduate School, 

 University of Georgia, Athens, Ga. ; the University Center, Atlanta, Ga. ; the Mountain 

 Lake Biological Station, Mountain Lake, Va. ; and The Minnie D. Warren Fellowship, 

 Highlands Museum and Biological Laboratory, Highlands, N. C, for financial assistance 

 in making this study possible. 



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