AGRICULTURAL EXPERIMENT STATION. 49 
9. MALLARD. 
Anas bosechas Linn. 
Transient visitant; common. This duck is sometimes known 
by the name of Green-head. I met with it during the last week 
of October along the South Branch of the Potomac, in Hamp- 
shire County. 
10. BLACK DUCK. 
Anas obscura Gmel. 
Transient visitant; common on the Ohio River, where I met 
with it frequently after October 1, as well as on several of the 
smaller streams, where it is known as the Dusky Duck. 
Lt. GADWALL. 
Anas strepera Linn. 
Transient visitant; tolerably common on all the larger 
streams. It is generally known as the Gray Duck. 
12. WIDGEON. 
Anas americana Gmel. 
Transient visitant. I did not observe any until November 3, 
and then one only, which was taken on the Potomac River, 
near Green Springs, Hampshire County. 
13. GREEN-WINGED TEAL. 
Anas carolinensis Gmel. 
Transient visitant; tolerably common, Dr. Mathers informed 
me that this Teal is very common some seasons on Buckhannon 
River. I did not see it until descending Cheat River on the 
morning of October 22. 
14. BLUE-WINGED TEAL. 
Anas diseors Linn. 
Transient visitant; rare. 
LES. SHOVELLER. 
Spatula clypeata (Linn.). 
Transient visit; tolerably common, 
