PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 219 



Chenopis Wagl. 1832. 



DiAGN. — Predoininant color of the adults Uachish ; the young icith nalced 

 lores; tertiaries and scapulars cris]) ; tail shorter than the middle toe tvitli 

 claw, rounded; inner icehs of outer three primaries and outer icehs of the 

 second, tJiird, and fourth sinuated; webs of the feet not scalloped. 



&YN.— =1822.— Chenopis, Wagler, Isis, 1832, p. 1234. 

 =1852. — Chenopsis Eeichexb., Syst. Av., p. X.* 

 =\SM.— Chenopis Jekdox, Birds of ludia, III, p. 777. 



Chenopis atrata (Lath.). 



Black Swan. 



Dika-^.—Flmnage of the adults blacJcish, with white icing feathers ; bill 

 red, with a tvhite band behind the nail ; legs black. 

 Syn.— 1790. — Anas airataL,\TH., lud. Oruitli., II, p. 834. 



1790.— Anser Novoo-HoUandicc Boxna.t., Eucycl. Mdth. Oruith. I, p. 103. 



1791. — Anas plutonia Shaw, Natur. Miscell. Ill (tab. 108). 



Coll. Stejnegek, No. 71U. {Pullus, Victoria, Australia.) 



Length of bill along gape 24'""', from the tip to the fore border of the 

 nostrils 14"™, to the front of the eye 34'""\ Length of toes with claws: 

 Outer toe 34, middle toe 36, inner toe 29, and hind toe 7'"'". Tarsus 

 29'""'. 



The bill and an entirely naked 2-"'"' broad stripe from that to the eye 

 dark horn colored, or brownish black ; the nail of the upper mandible 

 as well as the lower is white at the tip. The feet dull grayish brown. 



The faintly glossy plumage, is on the whole of the upper surface, the 

 cheeks, the tibia, and the crissum, light brownish gray, which color, 

 especially behind the feet, is tolerably distinctly marked against the 

 white color of the undersurface ; this on the throat is shaded with the 

 same tinge as the back ; the white color of the chin and throat goes 

 imperceptibly over into the grayish tinge on the cheeks. 



* Usually is quoted "C/fe^o^JsJs Agassiz," audGiEBEL, in his Thes. Ornitli., adds "No- 

 mencl. univers"; but I have uot been able to find it in his Nomenclator Zoologicus, 

 Aves, nor in either of the two editions of his Index Universalis. 



