[1921] 
XV. Aves. 
Aves. 47 
Fam. Momotidae. 
[Prionornis] Electron platyrhynchum 
synops. of subspecies, p. 341 ; E. p. 
orienticola subsp. n. N.W. Brazil, p. 
342, Oberholser Proc. Indiana Acad. 
Sci. for 1919. 
Fam. Caprimulgidae. 
Nyctibius griseus, concealing mimicry, 
Fiebrig 207. — N. longicaudatus choco- 
ensis subsp. n., Colombia, Chapman 
Amer. Mus. Novit. No. 18 p. 5. 
Chordeiles virginianus nesting obser- 
vations, Bowles 96. 
Cciprimulgns notes on Indian species, 
Osmaston 539. — C. inornatus and C. 
binotatus range, ' Bannerman 54 p. 
99. — C. pectoralis guttifer subsp. n. 
Usambara, Grote J. Orn. 69 p. 125. — 
C. eximius simplicior subsp. n., N. 
Nigeria, Hartert Nov. Zool. 28 p. 
109. 
Fam. Macropterygidae. 
Macropteryx coronata, nest and eggs, 
Osmaston 538. 
Fam. Cypselidae. 
Collocalia chemistry and food value 
of edible birds’ nests, Wang 762 763. — 
C. marginata nest and eggs, McGregor 
439 p. 545. — C. esculenta tametamele 
subsp. n. New Britain, Stresemann 
Anz. Orn. Ges. Bay, No. 5 p. 37. — G. 
gigas recorded from W. Sumatra, 
Robinson 599 p. 65. 
[ Chaetura ] Hemiprocne mystacea 
aeroplanes subsp. n. New Britain, 
Stresemann Anz. Orn. Ges. Bay. 
No. 5 p. 38. 
Tachornis uamensis sp. n. Cameroon, 
Reichenow J. Om. 69 p. 47. 
[Cypselus~\ Apus melba clutch-number, 
Hess 298. — A. apus migration dates in 
Holland, Swaen 710. — M. apus migra- 
tion dates at Berlin, Schuster 655. — 
A. murinus brehmorum in S. Sahara 
range and taxonomy, Hartert 285 
p. 110. — M. pacificus in the Pribilof 
Is. new to N. America, Mailliard & 
Hanna 452. — M. peruvianus Chap- 
man = M. parvulus Berl. and Stolz. 
Chapman 135 p. 65. 
Fam. Trochilidae. 
A review of the Humming birds 
with synopsis and catalogue, Semon 
673. 
The following new generic names : — 
Chionomessa gen. n. for type Agyrtria 
lactea (Lesson) ? p. 320. 
Arenella nom. n. pro Arena Muls. 
preoccupied p. 331. 
Chlorurisca gen. n. for type Chalybura 
isaurae (Gld.) p. 340. 
Apatelosia gen. n. for type Homo - 
phania lawrencei Bouc. p. 361. 
The following new forms described : — 
Phaethornis superciliosa saluratior 
Venezuela ; P. s. nigella Bogota 
subspp. n. pp. 13, 252. 
Anisoierus augusti incanescens Bt. 
Guiana, A. a. vicarius Colombia 
subsp. n. pp. 16, 257. 
Guyornis guyi napensis subsp. n. 
Ecuador, pp. 18, 258. 
Pampa curvipennis yucatanensis 
subsp. n. Yucatan, pp. 28, 264. 
Campylopterus largipennis maronicus 
subsp. n. French Guiana, pp. 29, 265. 
Lampornis dominica intermedia 
subsp. n. Porto Rico W.I., pp. 39, 274. 
Lophornis lessoni nom. n. pro L. 
delattrei Gould nec Less. Costa Rica, 
pp. 53, 285. 
Prasitis melanorhynchus perviridis 
Colombia P. caribaea orinocensis 
Venezuela subspp. n. pp. 63, 290. 
Chlorostilbon aureiventris tucumanus 
subsp. n. S.E. Brazil, pp. 65, 293. 
Chrysuronia oenone azurea subsp, n. 
Ecuador, pp. 88, 307. 
Encephala grayi meridionalis subsp. n. 
Ecuador, pp. 93, 312. 
Polytmus thaumantias andinus 
subsp. n. Colombia, pp. 101, 316. 
Tephropsilus hypostictus peruvianus 
subsp. n. Peru, pp. 103, 319. 
Agyrtria veneta sp. n. Colombia, 
pp. 112, 328 ; A. milleri laglaizei 
subsp. n. Venezuela, pp. 113, 328 ; A. 
nitidifrons meracula subsp. n. patr. 
incert. pp. 114, 329. 
