DENDROC YGNA. 187 



Subfamily ANATIN^E. 



Genera. 

 a 1 . Bill not spatulate. 



6 1 . Central tail-feathers not greatly lengthened. 



c 1 . No wing-speculum; lower portion of tarsi with small reticulate scales in 



front Dendrocygna (p. 187) 



c 2 . Wing-speculum present; lower portion of tarsi with transverse scutella 



in front. 

 d 1 . Larger; bill broader; culmen more than 50 mm. 



e 1 . Bill uniform blackish Anas (p. 189) 



e 2 . Bill with a broad yellow band at the tip Polionetta (p. 190) 



d 2 . Smaller; bill narrower ; culmen less than 45 mm. 



e 1 . Larger; wing more than 230 mm Mareca (p. 191) 



e 2 . Smaller; wing less than 215 mm. 



f 1 . Secondary-coverts brown; greater part of head and neck chestnut in 



adult Nettion (p. 192) 



f 2 . Secondary-coverts blue-gray; head and neck not chestnut. 



Qnerquedula (p. 195) 



6 2 . Central tail-feathers greatly lengthened Dafila (p. 194) 



a 2 . Bill flattened and spatulate Spatula (p. 196) 



Genus DENDROCYGNA Swainson, 1837. 



General color largely blackish and reddish or yellowish brown; breast 

 more or less spotted; no bright colored speculum nor white wing-patch; 

 inner web of first primary deeply scooped near its middle; next three 

 quills slightly emarginate. 



Species. 

 a 1 . Wing-coverts deep chestnut. 



6 1 . Fore part of head white viduata * 



6 2 . Fore part of head brown; breast rufous-chestnut with small black spots. 



arcuata (p. 187) 



a 2 . Wing-coverts blackish brown; breast and sides marked with round white 

 spots guttulata (p. 189) 



155. DENDROCYGNA ARCUATA (Horsfield). 

 WANDERING TREE DUCK, 



Anas arcuata HORSFIELD, Zool. Res. in Java (1822), pi. 65. 



Dendrocycna arcuata SALVADOR!, Cat. Birds Brit. Mus. (1895), 27, 153; 



GATES, Cat. Birds' Eggs (1902), 2, 158. 

 Dendrocygna arcuata SHABPE, Hand-List (1899), 1, 214; MCGREGOR and 



WORCESTER, Hand-List (1906), 37. 



Ba-li'-uis, Luzon; nd-ga, Ticao; ga-kit', Bohol. 



Bantanyan (McGregor); Basilan (Steere Exp., McGregor); Bohol (Everett, 

 McGregor); Camiguin N. (McGregor); Catanduanes (Whitehead) ; Cebu (Eve- 

 rett); Guimaras (Steere Exp.); Leyte (Everett); Luzon (Cuming, Worcester, 



* The white-faced tree duck, Dendrocygna viduata (Linnaeus), has been re- 

 corded as a Philippine species ; I believe it should be omitted from our list. 



