56 Aves . 
xvil. Aves. 
[1918] 
ORDER ACCIPITRIFORMES . 
Birds of Prey of Iowa monographed, 
Bailey 36. 
The Birds of Prey of the Punjab, 
Donald 231. 
Destruction of Hawks in Switzer- 
land, Blanc 90. 
The economics of Hungarian Hawks, 
Bittera 88 ; Canadian Hawks, Taver- 
ner 850 ; Australian Hawks, Le 
Souef 459. 
Gyps indicus nesting in trees in 
Lucknow distr., Matthews 532. 
Polyborus cheriway two subspecies 
recognised, Bangs & Noble 57 p. 
433. 
Milvago chimachima cordata subsp. n. 
Panama, Bangs & Penard Bull. Mus. 
Comp. 2,oo\. 52 p. 35. — ill. chimango 
temucoensis subsp. n. southern Chile, 
Solater Bull. B.O.C. 38 p. 43. 
Circus macrurus and C. cyaneus 
distinguishing marks in the field, 
Csorgey 186. — C. cyaneus , wintering 
in Scania, Gylling 305. 
Micrastur review of the genus, 
Solater 772 M. plumbeus sp. n. N.W. 
Ecuador id. Bull. B.O.C. 38 p. 414, 
figured in 772 pi. viii. 
Geranospiza niger balzarensis subsp. 
n. western Ecuador, Solater Bull. 
B.O.C. 38 p. 45. 
Parabuteo unicinctus photo of nest 
and eggs, Dabbene 193 p. 100. 
Astur palumbarius food habits in 
Hungary, Bittera 89 ; plumage 
variation Lonnberg 476. — A. tachiro 
tenebrosus subsp. n. B. E. Afr., Lonn- 
berg Rev. Zool. Afr. 5 p. 99. — Dino- 
spizias pectoralis in Paraguay, Dab- 
bene 192 p. 99. 
Accipiter nisus breeding habits, 
Owen 634 ; food habits in Hungary, 
Bittera 89. — A. nisus galliae subsp. n. 
France, Kleinschmidt Falco 13 p. 24, 
also Bacmeister & Kleinschmidt 
32 p. 259. — A. virgatus races dis- 
cussed, Robinson & Kloss 703 p. 
120. — A. bicolor fidens subsp. n. Vera 
Cruz Mexico, Bangs & Noble Auk 
85 p. 444. 
Butco butco and B. anceps ruficaudus 
Polish races discussed, Domaniewski 
218 p. 1028.— J3. 6. ruficaudus in Hol- 
land, Snouckaert 801 p. 18. — B. 
jakal archeri subsp. n. Somaliland, 
Solater Bull. B.O.C. 39 p. 17.— B. 
platyplerus iowemis Bailey founded on 
a melanistic variation of B. platyplerus, 
Oberholser 614. 
Praedo gen. n. for typo “ Mause- 
bussard ” ; Kleinschmidt Falco 13 
p. 10. 
Rupornis magnirostris insidiatrix 
subsp. n. eastern Colombia, Bangs & 
Penard Bull. Mus. Comp. Zool. 52 
p. 36. 
Thrasaetus harpyia has not occurred 
in Colorado, Bergtold & Lincoln 
78. 
Uroa'etus andax on the eggs, White 
905. 
Aquila clanga not A. fusca is the 
correct name for the Greater Spotted 
Eagle, Anon 11 p. 239. — A. pomarina 
in Finland, Finnila 247. 
Archibuteo lag opus field notes in 
Lapland, Finnila 244 ; wintering in 
southern Sweden, Fries, 261. 
[Entolmaetus] Aquila pennata in 
Dept. Orne, Latacq 448. 
Ictinaetus malayensis nesting habits 
described and eggs figured, Baker 42 
pi. ii figs. 1-4. 
Herpetotheres cachinnans chapmani 
subsp. n. Mexico, Bangs & Penard 
Bull. Mus. Comp. Zool. 52 p. 37. — H. 
c. maestus subsp. n. Peru, Bangs & 
Noble Auk 35 p. 444. 
Circaetus gallicus in the Sahara, 
Schweppenburg 768 p. 132. 
Pithecophaga jefferyi, note on a 
recently captured individual, with 
photos, of head and sketches of struc- 
tural details, McGregor 499 p. 14. 
[Haliaetus] Aquila albicilla in Dept. 
Orne, Latacq 447 ; fossil fragments, 
Lonnberg 478. 
Milvus m. milvus conservation in 
Wales, Meade-Waldo 538. 
Helicolestes gen. n. for typo Rost - 
rhamus hamatus (Illigcr) occurring in 
Surinam, with taxonomic note, Banos 
& Penard Bull. Mus. Comp. Zool. 54 
p. 38. 
