60 Aves. 
XVII. Aves. 
[1920] 
[Merganser] Mergus squamatus eclipse 
plumage described, in the Commander 
Is. in June, Hartert 305 p. 147. — 
M. senator courting antics, Dobbrick 
194. 
ORDER PELECANIFORMES. 
The Cormorants Pelicans, etc., of the 
Palaearctic region monographed, Har- 
tert 303 p. 1385. 
Phalacrocorax bougainvillei P. vigua, 
P. gaimardi field-notes Peruvian coast, 
Coker 154 p. 474: — P. pygmaeus re- 
corded from Sicily, Trischitta 766. — 
P. urile (Cm.) must be used instead of 
P. bicristatus , Hartert 305 p. 148. 
[Plotus] Anhinga anhinga colours of 
soft parts, Wetmore 797 ; on the 
caeca, Wetmore 790. 
Sula piscator discussion of name, 
Mathews 491. — S. variegata, S. nebouxi 
field-notes Peruvian coast, Coker 154 
p. 466. 
Pelecanus californicus occurring on 
tho Pearl Is., Panama, Rendaiil 617. — 
P. thagus field-notes Peruvian coast, 
Coker 154 p. 486. 
ORDER ACCIPITRIFORMES. 
Synoptical list of Accipitres, pts. 3 
and 4, Swann 725. 
The Birds of Prey of the Punjab, 
Donald 196. 
Notes on South African Accipitres, 
Finch-Davies 227. 
Identification of Hawks in the field, 
Townsend 761. 
Nestling down of British Hawks, 
Witherby 820. 
Sagittarius Hermann v. Serpentarius 
Cuv., Stresemann 716 p. 328. 
Gyps rueppelli not a S. African bird, 
Finch-Davies 227 p. 415. 
Lophogyps occipitalis juvenile plu- 
mage, Finch-Davies 227 p. 413. 
Neophron p. percnopterus occurrence 
and measurements near Simla, Whist- 
ler 788 p. 109 ; in East Prussia, 
Tisohler 753 ; strange habits in 
Morocco, Chaise 132. 
Polyborus tharus figured in colour, 
Hudson 363 p. 75. — |P. latebrosus sp. 
n. cave deposits Porto Rico, Wetmore 
Proc. Biol. Soc. 33 p. 77 pi. 2 figs. 5 6. 
• Astur palumbarius nest photographed 
in Holland, Bloem 84. — A. badius 
cencroides in Baluchistan — a correction, 
Laubmann ,424. — Accipiter badius 
poliopsis first record for Sumatra, 
Robinson & Kloss 631 p. 81. 
\ 
Accipiter nisus prolonged breeding 
period, Seemann 669. — A. n . major 
historical note in M.S.S., Hughes 364. — 
A. minullus sexual differences in plu- 
mage, Finch-Davies 227 p. 431. — 
A. super ciliosus exitiosus subsp. n. 
Costa Rica, Bangs & Penard Proc. 
N. Engl. Zool. Cl. 7 p. 45. 
Buteo erythronotus figured in colour, 
Hudson 363 p. 47. — B. angur nesting in 
S.W. Afr. Protect., Finch-Davies 229 
p. 92. — B. vulpinus intermedins , B. 
zimmermanae nomenclatural, Zedlitz 
828 p. 355. — B. buteo habits in British 
Isles with photos, Brook 100. — B. 
b. liwrlani status and ooeurrence in 
Colorado, Lincoln 444. — B. lineatus 
extimus subsp. n. Key Biscayne, 
Florida, Bangs Proc. N. Engl. Zool. 
Cl. 7 p. 35. 
Rupornis magnirostris discussion of 
subspecies, Hellmayr 314 p. 129. 
Percnohierax gen. n. for Falco 
[Rupornis] leucorrhous Q. & G. Ridgway 
Smiths. Misc. Coll. 72 No. 4 p. 2. 
Morphnarchus gen. n. for type 
Leucopternis princeps Scl., Ridgway 
Smiths. Misc. Coll. 72 No. 4 p. 2. 
Aquila varreauxi breeding near 
Windhuk, nest described, first record 
from S.W. Afr. Protect., Finch- 
Davies 229. p 90 ; field-notes and 
nesting in Upper Natal, Symons 732. — 
A. heliaca captured near Marseilles, 
L’Hermitte 326. — A. fasciata nesting 
in Provence S. France, Mourgue et 
L’Hermitte 533. 
Oroaetus gen. n. for type, Falco 
[Lophotriorchis] isidori (Des Murs), 
Ridgway Smithson. Misc. Coll. 72 No. 4 
p. i. 
Spizaetus coronatus plumage develop- 
ment, Finch-Davies 227 p. 432. 
