278 The Encystment of Bucephalus Haimeanus. 



Gadus, or otlier voracious and "well-armed fisb. Finally, as one 

 has met Bucejjhalus in the liver of Paludinse and Gasterostomae, 

 in the intestines of the pike, the eel, and of other fish, and even in 

 the duck, I am compelled to think that the fresh-water species of 

 this group of Trematodes are more numerous than is at present 

 believed. The difierences already pointed out between the marine 

 Bucephalus of the ocean and that of the Mediterranean Sea will 

 probably have a greater importance when we shall have made a 

 more complete and comparative study of these animals. — Comptes 

 Bendus, p. 485, August 17, 1874. 



