PROCEEDINGS 



ACADEMY OF NATURAL SCIENCES 



PHILADELPHIA. 



1885. 



January 6, 1885. 



Dr. Chas. Schaeffer in the chair. 



Twentj'-six persons present. 



The following papers were presented for publication : — 



" On the American Species of the Genus Umbra," by Willis S. 



Blatchley. 



"A Review of the Species of the Genus Semotilus," by Ernest 



P. Bicknell and Fletcher B. Dresslar. 



January 13. 



The President, Dr. Leidy, in the chair. 



Twenty -four persons present. 



On some Parasitic Worms of Birds. — Prof. Leidy stated that 

 Dr. B. H. Warren, of Westchester, much interested in ornitho- 

 logical pursuits, had submitted to his examination a number of 

 parasitic worms obtained in the preparation of specimens. 

 Recently he had sent to him the carcass of a Snow Bird, Junco 

 hyemalis, in which he reported a multitude of worms filling the 



