PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM 



issued |^*(VvA- \il^ ^y '** 



SMITHSONIAN INSTITUTION 



U. S. NATIONAL MUSEUM 



Vol.84 Washington: 1937 No. 3010' 



OBSERVATIONS ON THE TREMATODE GENUS BRACHY- 

 COELIUM DUJARDIN 



By Elon E. Bykd 

 University of Georgia, Athens, Oa. 



During the past five years I have examined many vertebrate ani- 

 mals, chiefly amphibians and reptiles, from various places over a por- 

 tion of the Southeastern United States, mainly from two localities : 

 New Orleans, La., and vicinity and Athens, Ga., and vicinity. These 

 examinations have yielded a great variety of parasitic forms, many 

 of which appear to be new to science. 



Collections were made personally from the various places men- 

 tioned in the text, and all animals were brought into the laboratory 

 before being examined. Except in instances in which only a very 

 few animals were collected from any one given locality, the hosts 

 were examined at various times after collections were made. By this 

 method those parasites collected immediately after the hosts were 

 brought into the laboratory could be checked against those parasites 

 having had a longer time in which to mature. This procedure seemed 

 advisable, since in a great many instances specific diagnosis of 

 trematodes depends to a greater or lesser extent on the differences in 

 dimensions of the various organs in the mature stage. 



All parasites were studied first while living and then after being 

 fixed. The worms considered in this paper were killed with cold 



115119—37 1 183 



