48 Aves. 
XV. Aves. 
[1922] 
Ardea cinerea migrations in Denmark 
from ringed birds, Saxtorph 658. 
Afrardea gen. n. for Ardea melano- 
cephala Vig. & Childr., Roberts Ann. 
Transvaal Mus. 8 p. 203. 
[Mesophoyx] Egretta intermedia 
nesting habits in N. S. Wales with 
photos, Morse 519 p. 38. 
[Herodias] Egretta alba nearly extinct 
in Hungary, Schenk 663. 
Dichromassa rufescens field-notes in 
Texas, Pemberton 585. 
[Lepterodius] Egretta gularis schistacea 
in S. Abyssinia described, Berlioz 71 
p. 397. 
[ Garzelta 1 Egretta garzetta on a blue- 
grey variation in the Sudan, Butler 
109. 
Demiegretta sacra Micronesian races 
discussed and figured pi. ii, Momiyama 
512. — D. s. cooktowni dimorphism and 
nesting notes, Alexander 7 p. 475. 
Pilherodias pileatus in Panama, 
Bangs & Barbour 37a p. 193. 
' Tigrisoma bolivianum new to Argen- 
tina, Wetmore 829. 
[ Ardetta ] Ixobrychus minutus voice, 
Heyder 348 p. 10. 
Botaurus slellaris in Siam, Aagaard 
1. — B. lentiginosus the oesophagus and 
the booming note, Chapin 134. 
ORDER PHCENICOPTERIFORMES. 
Pho&nicopterus roseus pathology, 
Mouquet 522. 
ORDER ANSERIFORMES. 
The status of the Scottish breeding 
ducks Baxter & Rintoul 54. 
Breeding dates of Scottish ducks 
Jourdain 390. 
Notes on the eggs of Dutch ducks 
Vries 819. 
Field studies and field recognition 
marks of North American ducks Gris- 
oom 294. 
Trapping and banding or marking 
ducks in Ontario Lincoln 445. 
Cygnus variation and anomalies in 
swans on the Lake of Geneva Mail- 
lefer 480. — G. cygnus nesting in 
Scotland Gordon 281. — G. beioickii in 
W. Prussia La Baume 416 ; Olor 
buccinator breeding record in Alberta 
Lloyd 443. — G. olor at the Mansurian 
Lakes in East Prussia Heinroth 336. 
Gairina moschata X Ghenalopex cegyp- 
ticus characters of hybrid Lecaillon 
430. 
Pteronetta albifrons not distinct from 
P. hartlaubi Sclater 686 p. 117. 
Anser neglectus taken nr. Potsdam 
new to Germany Stresemann 745. — 
A. albifrons on Lake Geneva Meylan 
504. — A . arvensis sibiricus remarks 
Olsen* 563 p. 12. 
Gygnopsis cygnoides X Cygnus olor 
hybrid described, Voss 818. 
Branta canadensis status of subspecies 
discussed Figgins 225 ; habits in W. 
Canada Taverner 777. — B. bernicla 
migrations and breeding haunts in 
Greenland Porsild 604. — Branta 6. 
bernicla and B. leucopsis nesting in 
Spitsbergen Jourdain 385, 387 p. 164. 
— B. leucopsis nesting notes in Spits- 
bergen Wilkes 854. 
Dendrocygna viduala taken in Spain 
Sagarra 651. — D. bicolor found in 
Venezuela Osgood & Conover 567 
p. 45. — D. bicolor helva subsp. n. 
W. U.S.A. and Mexico Wetmore & 
Peters Proc. Biol. Soc. 35 p. 42. — 
Anas arcuata Horsf. nomenclatoral 
validity Riley 625 p. 78. 
Anas early stages in plumage develop- 
ment Lamont 418. — A. boschas a 
double-winged monster Zenkewitsch 
877 ; pairing habits Schjelderup-Ebbe 
669. 
Afranas gen. n. for Anas undulata 
Dubois Roberts Ann. Transvaal Mus. 
8 p. 204. 
Melananas gen. n. for Anas sparsa 
Eyton Roberts Ann. Transvaal Mus. 
8 p. 204. 
Notonetta gen. n. for Anas capensis 
Gmel. Roberts Ann. Transvaal Mus. 8 
p. 204. 
Micronetta gen. n. for Anas punctata 
Burchell Roberts Ann. Transvaal 
Mus. 8 p. 204. 
Dafila acuta X Anas boschas charac- 
ters of hybrid Lecaillon 431, 432. 
Spatula clypeata status and breeding 
habits in Norfolk Gurney 305 ; food- 
liabits McAtee 473. 
