CATALOGUE OF VERTEBRATES. 619 



ERISMATURA, Bonap. 



B. rubida, Wils. Ruddy Duck. 



Male, top of head black ; lower parts whitish (brownish gray 



beneath surface); upper parts reddish chestnut; female and 



young male, above grayish brown, mottled with buff; top of 



head darker ; rest of head grayish white, with brownish stripe 



• on sides. Length, 16 inches or lefs. 



" More abundant during some years than others, Not unfre- 

 quent in Chesapeake Bay, where it is known as ' salt-water teal.' " 



NOMONYX, Ridg. 

 N. dominious, L. Masked Duck. San Domingo Duck. 



Accidental in various parts of Eastern United States ; differs 

 from the above in having a larger nail at tip of bill, not bent 

 back at tip, but nearly all visible from above ; there is a white 

 spot on wings, and young male and the female have two stripes 

 on sides of head. Length, 14 inches or less. 



CHEN, Bole. 



C. hyperborea, var. nivalis, Forst. (Anser.) Greater Snow Goose. 



Pure white (or washed with reddish grayish in young) ; quills 

 black. Length, 30 to 38 inches. An arctic form, migrating 

 south in winter. Bill, 2J inches, robust, with prominent 

 lamellae. 



" Rare. Two or three together occasionally met with along 

 the coast in winter. Never seen inland, or on Delaware Bay." 



ANSER, Briss. 



A. albifrons, var. gambeli, Hartl. American White-fronted Goose. 

 Speckle-bill. [Laughing Goose.] 

 Head grayish brown, forehead white; lower parts grayish 

 white, spotted with black ; tail coverts white ; bill yellowish ; 

 feet light colored ; back dark. Length, 27 to 30 inches. 



" Like the preceding, is a rare species, met with only as a 

 straggler, in winter. Have seen one specimen, killed at Barne- 

 gat."— [C. C. A.J 



