[1921] 
XV. Aves. 
Aves. 3 
40. — Baldwin, S. P. Recent returns 
from trapping and banding birds. 
Auk Lancaster Pa. 38 1921 pp. 228- 
237. 
41. — Baldwin, S. P. The marriage 
relations of the House Wren ( Trog- 
lodytes a. aedon). Auk Lancaster Pa. 
38 1921 pp. 237-244. 
42. — Balfour, H. Varieties of the 
Common Gannet. Brit. Bds. London 
15 1921 pp. 82-84 2 figs. 
43. — Bangs, 0. The birds of the 
American Museum of Natural History’s 
Asiatic zoological expedition of 1916- 
1917. Bui. Amer. Mus. N. H. New York 
44 1921 pp. 575-612. 
44. — Bangs, O. and Penard, T. E. 
The name of the Eastern Hermit 
Thrush. Auk Lancaster Pa. 28 1921 
pp. 432-434. 
45. — Bangs, 0. and Penard, T. E. 
Notes on some American Birds, chiefly 
Neotropical. Bui. Mus Comp. Zool. 
Cambridge Mass. 64 1921 pp. 365-397. 
[Grotophaga Dendroplex, Myiozetetes, 
Tyrannus, Pachyrhamphus, A llenia, 
Sicalis .] 
46. — Bangs, O. and Penard, T. E. 
Lophotriccus versus Cometornis. A 
new name for Pachyramphus polycho- 
pterus costaricensis Chubb. Proc. Biol. 
Soc. Washington 34 1921 p. 78. 
47. — Bangs, 0. and Penard, T. E. 
Descriptions of six new subspecies of 
American birds. Proc. Biol. Soc. 
Washington D.C. 34 1921 pp. 89-92. 
[ Geranospiza , Otus, Mecocerculus, Nut- 
tallornis, Melanotis, Tangara.] 
Bangs, 0. vide Thayer. 
48. — Bannerman, D. A. Eurystomus 
afer praedi subsp. n. Bui. Bt. Orn. Cl. 
London 41 1921 pp. 70-71. 
49. — Bannerman, D. A. Two new 
races of Malimbus rubricollaris de- 
scribed. Bui. Bt. Orn. Cl. London 41 
1921 pp. 77-78. 
50. — Bannerman, D. A. A new race 
of Negro Finch. Bui. Brit. Orn. Cl. 
London 41 1921 p. 126. 
51. — Bannerman, D. A. New races 
of Gyanomitra, Amblyospiza, Serinus , 
Anthreptes. Bui. Bt. Orn. Cl. London 
41 1921 pp. 135-138. 
(n-17041 g) q 
52. — Bannerman, D. A. A new 
species of Anthreptes. Bui. Bt. Orn. Cl. 
London 42 1921 pp. 8-9. 
53. — Bannerman, D. A. A new 
Paradise Flycatcher from Lagos. Bui. 
Bt. Orn. Cl. London 42 1921 p. 28. 
54. — Bannerman, D. A. Remarks 
on rare and otherwise interesting 
birds contained in collections made by 
Mr. G. L. Bates in Southern Cameroon. 
Ibis London 1921 pp. 81-121. 
55. — Bannerman, D. A. On the 
genus Macrosphenus Cassin, with 
special reference to the races of Macros- 
phenus flavicans. Ibis London 1921 
pp. 121-125. 
56. — Bannerman, D. A. A syste- 
matic list of the birds of Sierra Leone. 
Ibis London 1921 pp. 282-302. 
57. — Bannerman, D. A. First im- 
pressions of Tunisia and Algeria. Ibis 
London 1921 pp. 387-414 4 pis. 
Bannerman, D. A. vide Iredale. 
Bannerman, D. A. vide Lowe. 
58. — Bartels, M. Ueber einige fur 
Java neue Vogel ii. Treubia Batavia 1 
1921 pp. 161-162. 
59. — Bassett, F. N. The nuptial 
flight of the Allen Humming bird. 
Condor Berkeley Cal. 23 1921 p. 37 
%• 
Batson, O. V. vide Kuntz. 
60. — Baxter, E. V. and Rintoul, 
L. J. The Pintail as a Scottish breed- 
ing species. Scot. Nat. Edinburgh 
1921 pp. 37-42. 
61. — Baxter, E. V. and Rintoul, 
L. J. Report on Scottish Ornithology 
in 1920, including migration. Scot. 
Nat. Edinburgh 1921 pp. 105-120 
135-158. 
62. — Beaufort, L. F. de. Further 
additions to the knowledge of the 
Avifauna of East Sumatra. Ardea 
Leiden 10 1921 pp. 171-174. 
63. — Beckindale, F. Ostriches in 
the Northern Sudan. Sudan Notes 
& Rec. Khartoum 3 1920 p. 303. 
c 7—2 
