8 Aves. 
XVII. Aves. 
[1919J 
Blaauw, F. E. On the eclipse 
plumage of Spermo'pMla pileaia. Ibis 
London 1919 (83-84). 79 
Blaauw, F. E. On the plumage - 
development of Net lion torquatum, 
Poecilonetta eryihrorhyncha and Anas 
unduJata. Ibis London 1919 (454-45C). 
80 
Blackwelder, E. Notes on the sum- 
mer birds of the Upper Yukon region, 
Alaska. Auk Cambridge Mass. 36 1919 
67-34). 81 
Bflathwayt], F. L. The late Dr. J. 
Wiglesworth. Brit. Birds London 13 
1919 (52-55) portr. 82 
Boetticher, H. v. Ornithologischo 
Beobachtungenin der ]\Iuss-Alla-Gruppe 
(Rila-Gebirge) 1916-19. J. ^ Ornith. 
Leipzig 67 1919 (233-257). 83 
Bolam, G. On the effect of the 
winter of 1916-17 on bird-life. Vascu- 
lum Hexham 4 1918 (9-12) ; also 
J. S. T. Walton (34-35). 84 
Bolam, G. Ornithological Miscel- 
lanea. Vasculum Hexham 4 1918 
(86-90). 85 
Bolam, G. Some winter wildfowl 
(in Northumberland). Vasculum Hex- 
ham 5 1919 (145-152) figs. 86 
Bonhote, J. L. Bird-liming in Lower 
Egypt, with an introduction on the 
need for protection of birds in Egypt 
by Major S. S. Flower (ii-f 9). Cairo 
(Govt. Press) 1919 1. 8vo. 87 
Boring, A. M. and Morgan, T. H. 
Lutear colls and hon-feathcring. J. gen. 
Physiol. New York 1 1918 (127-131) 
4 figs. 88 
Boubier, M. Les cinq evontails do 
migration dcs oiscaux do . la fauno 
palearctique. Geneve Bull. Soc. Zool. 
2 1919 (216-228) map. 89 
Boubier, M. Du balancoment or- 
ganiquo ontro les longueurs compar^es 
do I’aile et du tarse choz les oiscaux. 
Rev. Franf. d’Orn. Paris 6 1919 
(49-50). 90 
Boubier, M. La distribution geo- 
graphique des Manchots (Spheniscides) 
et sur I’interpretation geophysique. 
Rev. Pran 9 . d’Orn. Paris 6 1919 (131- 
136). 91 
Boule, M. Los Grottos do Grimaldi 
Baousse-Rousse), vol. i fasc. iv 
Geologic et Paleontologio Oiseaux 
(299-331 342-344) pis. 36-41 Monaco 
1919 4to. 92 
Bowdish, B. S. vide Philipp. 
Boyd, A. W. Birds in the north of 
Franco 1917-18. Ibis London 1919 
(56-77). 93 
Bradbury, W. C. Nesting notes on 
the Rocky Mountain Creeper. Condor 
Hollywood Cal. 21 1919 (49-52) 
4 photos. 94 
Bradbury, W. 0. Some notes on the 
egg of JE^yornis maximus. Condor 
Hollywood ^Cal. 21 1919 (97-101) 
4 photos. 95 
Brewster, W. An undescribed race 
of Honslow’s Sparrow. Cambridge 
Mass. Proc. N. Engl. Zool. Cl. 6 1918 
(77-79). 96 
Brimley, C. S. and H. H. vide Pear- 
son. 
Brookes, G. B. Report on investi- 
gation in regard to the spread of 
Ih'ickly Pear by the Scrul)-Turkey 
{MegapoUius lumulus). hhmi l\li4 bourne 
18 1919 (288-292). 98 
Brooks, W. S. Two interesting addi- 
tions to the collection of the Boston 
Society of Natural History : Oavia 
pacifica, Squalarola sqvatarola. Auk 
Cambridge Mass. 36 1919 (589). 99 
Brooks, W. S. An undescribed Song 
Sparrow from Alaska. Cambridge Mass. 
Proc. N. Engl. Zool. Cl. 7 1919 (27). 
100 
Brouwer, G. A. and Verwey, d. 
Waarnomingen van hot “ Trekstation 
Noordwijk aan Zee.” Ardea IVagen- 
ingen 8 1919 (1-91) map et. ot. 101 
Brown, A. Report on the birds of 
Epping Forest for 1919. London 
Trans. Nat. Hist. Sue. for 1918 1919 
(30-37). 102 
Bryant, H. W. A holiday trip to 
the far Upper Murray. Emu Mel- 
bourne 19 1919 (62-68). 103 
Buchner, O. Ueber Albinismus in 
der Tierwelt Wurttemborgs. Stuttgart 
Jahresh. Ver. Natk. 75 ^1919 (83-128 
Vogel 99-106). 104 
Buckner, C. D. and others. The 
normal growth of White Leghorn 
Chickens. Amer. J. Physiol. Baltimore 
47 1918 (393-398). 105 
