57 Area. 
System atici. — Aocipitriformes. 
5831 
P. c. subcormoranus, Hartert 351. — 
P. georgianus, life history and relations 
to P. atriceps and P. albiventer, Murphy 
564 ; photographs in South Georgia, 
Murphy 563. — Hypoleucus varius 
hypoleucus, stomach contents and food 
habits and colours of soft parts, 
Morgan 553; S. White 904 p. 74 905 
p. 77. 
Sula bassana, movements at Butt 
of Lewis, Clyne 177 ; field observations, 
Robertson, 689. 
Fregata aquila, mating and nesting 
habits on Laysan 1., Dill 224. 
Phacthon americana , field notes and 
description, Tlath 635. 
ORDER CATHARTIDIFORMES. 
Catharles pernigra and C. urubitinga, 
description and field notes in Orinoco 
region, Cherrie 162 p. 336. 
ORDER ACCIPITRIFORMES. 
The Australian species monographed 
and the following figured : Haliastur 
sphenurus, pi. 245 ; Milvus migrans, 
pi. 246, Lophoictinia isura pi. 247, 
Gypoictinia melanosterna pi. 248, Elanus 
notatus pi. 249, E. scriptus pi. 250, 
Lophastnr suberistatus pi. 251, Falco 
lovgipennis pi. 252, F. hypoleucus pi. 
253, Rhynchodon peregrinus pi. 254, 
Notofalco subniger pi. 255, leracidea 
berigora pi. 256, Cerchneis cenchroides 
pi. 257, 258, Pandion haliaetus pi. 259, 
Mathews 513. 
Why birds of prey use green foliage 
in their nests, Schuster 748. 
' Secrelarius reptilivorus, field notes in 
S. Africa, Blaauw 76. 
Gyp* tenuirostris, breeding in Punjab, 
Jones 433. 
Pseudogyps bengalensis, breeding in 
immature plumage, Jones 434. 
t Neogyps errans gen. et sp. n. 
Pleistocene of California, Miller Univ. 
Cal. Publ. Geol. 9 p. 108 fig. 2. 
f Neophrontops americanus gen. et sp. 
n. Pleistooene of California, Miller 
Univ. Cal. Publ. Geol. 9 p. 106, fig. 1. 
Circus pygargus and C. cyaneus, their 
distinguishing characters when in 
flight, Hesse 384. 
Astur sphemirus obscurior subsp. n. 
Schari river in E. Cameroon, Reiche- 
now J. Ornith. 64 p. 161. — Cooperaslur 
poliogasler, new to Argentina, Dabbenr 
204. — Urospiza f. fasciata and U. /. 
insularis, the latter not valid, Brasil 
101 p. 201. 
Accipiler nisus, breeding and other 
habits, Owen 594. — A. n. major. 
validity discussed Anfrie 17 A. 
velox , field notes in Quebec, Brown 
109. 
Erythrotriochis radiatus lcalherine 
subsp. n. N. Terr. Austr., Mathew 
A ustr. Av. Rec. 3 p. 57. 
Buteo vulpinus, on the Upper 
Yenisei, SuSkin 814. 
Uroaelus audax , an albino, White 
898. 
Aquila chrysaetus , extinct in Ireland, 
Williams 915 ; field notes in Arizona, 
Williard 913. — Aquila sp., in mio- 
pliocene deposits of S. Russia, Przem- 
yski 651. 
[Archibuteo] Buteo lagopus , immigra- 
tion, eastern England, in 1915-16, 
Gurney 312. 
Haliastur sphenurus sarasini subsp. 
n. New Caledonia, Mathews Bds. 
Austr. 5 1916 p. 169. — H. s. johannae 
subsp n. N. Caledonia, Brasil Rev. Fr. 
Orn. 1916 p. 201. 
Milvus milvus, figured with note on 
economics Hermann 372 M. govinda. 
its relations to allied forms, Menegaux 
526. 
Leptodon palliatus, taken in Argen- 
tina, Dabbene 204. 
Baza, Aviceda and Lophastur , 
generic names discussed, Mathews 519 
p. 303, O.-Grant 583 p. 312. — L. sub- 
cristatus kempi subsp. n. N. Queensl., 
Mathews Bds. Austr. 5 1916 p. 220. 
Falco peregrinus, food habits, Carroll 
144 ; field notes in Finland, Seppa 
763. — F. p. pealei, distribution and 
nesting habits in Bt. Columbia, Green 
295. — F. fusco-coernlescens septentrio- 
nalis subsp. n. Arizona, Todd Proc. 
Biol. Soc. Washington 29 p. 98. 
leracidea berigora tasmanica, Tas- 
mania p. 276, J. b. kempi Cape York 
p. 277, 7. 6. centralia, central Australia 
p. 277 subspp. n., Mathews Bds. 
Australia 5. 
[Cerchneis] Tinnunculus tinnunculus 
nesting in Transcaucasia, Stan6inskij 
