3/2 MESSRS. SCLATER AND SALVIN ON [^P''- 4, 



Gatiso bianco, Az. Ap. no. 436 (La Plata), undo 

 Anser candidus, Vieillot, N. D. xxiii. p. 331 (1816), ct Ene. 

 Meth. p. 351 (1823). 



Coscoroba Candida, Reich. Nat. Syst. d. Vog. p. x. 



Albus ; primariorum apicibus nigris ; loris plumosis ; rostro lato 

 anatiformi ruberrimo, ungue cameo ; iride fere v.igra ; pedibua 

 rubro-carneis {ave viva) : long, tola circ. 400, alcB 17'5, caud<B 

 5'8, rostri a rictu 30, tarsi 3'5, dig. med. cum ungue 5"0 

 (Deser. exempl. ex Chilia in Mus. S. & G.). 



Hab. Chili {Molina, Gay, Philippi 8r Landbeck) ; Straits of Ma- 

 gellan {King, Cunningham) ; Falkland Islands {Abbott) ; Bueuos 

 Ayres {Azara, Burmeister). 



Burmeister observed the Coscoroba Swan in large numbers on the 

 rivers Parana and Salado, especially in the lagoons bordering the 

 river near Santa Fe. During the winter, he says, it keeps in flocks 

 like our Swan. He also observed it at Mendnza and in the large 

 lakes of the Pampas. 



Azara met with only two individuals of this species in Paraguay, 

 and a small flock at about 28° S. lat. He says, however, that 

 "it abounds in enormous flocks in the lagoons bordering the La 

 Plata. 



The Coscoroba Swan is rare in Chili, according to Philippi and 

 Landbeck, who, however, give no details respecting its range on the 

 western coast, though they mention a young one having been brought 

 to them from the Straits of Magellan. 



Mare harbour is the only part of East Falkland where Capt. Ab- 

 bott ever saw or heard of this species. At that spot there is usually 

 a flock of eight or ten to be seen. They breed in the neighbourhood, 

 young birds of about a month old having been observed. 



Living specimens of this Swan were brought to England in 

 18/0 and 1871, but as yet have not reproduced. A pair made a 

 nest in the Society's Gardens ; and eggs were laid in 1872, but no 

 young birds were hatched. 



Subfamily III. Anatin^. 



Genus 1. Dendrocygna. Type. 



Den<^?*owessa, Wagl. Isis, 1832, p. 281 (nee Sw.). . D. arcuata. 

 Dendrocygna, Sw. Class. Birds, ii. p. 36.5 (1837). D. arcuata. 

 Leptotarsis, Eyt. Mon. Anatinee, p. 29 (1838) . . D. eytoni. 



This genus is a good example of what may be called a Tropico- 

 politan group, being represented nearly everywhere within the tropics. 

 In America four very distinct species are found, besides another that 

 is scarcely more than a representative form. 



1. Dendrocygna fulva. 



Penelope meccicana, Briss. vi. p. 390 (Mexico), unde 

 Anas fulva, Gm. S. N. i. p. 530 (1788); Vieill. Enc. Mgth. 

 p. 136 (1823); Max. Beitr. iv. p. 918; Wagl. Isis, 1831, p. 532; 



