TITLES. 
Aves 27 
498. Ralfe, P. Terns in the Isle of Man. Zoologist 1899, p. 32. [Lari- 
formes.) 
-. [See Graves, F. S. (240).] 
499. Raspail, X. Le sens de l’odorat chez les oiseaux. Bull. Soc. France 
xxiv, pp. 92-102: Rev. Scient. (4) 11, pp. 144-148. 
501. Rattray, R. H. Birds collected and observed at Thull during five 
months in 1898, and notes on their nidification. J. Bombay Soc. xii, 
pp. 337-348. 
502. Reichenow, A. Die Vogel der Bismarckinseln. Mt. Mus. Berlin 
1899, Band i, Heft 3, pp. 1-106. [J Luscicapidce.) 
503. -. Ueber einige Afrikanische Vogel-arten. J. Ornith. 1899, 
p. 418. [Colii, Capitones, Zosteropidce .] 
504. -. Neue Vogelarten. Ornith. Monber. vii, p. 7. [Nectariniidce, 
Ploceidce, LaniidrE, Pycnonotidce, Muscicapidce.) 
505. -. Neu entdeckte Arten von Kamerun. T. c. pp. 40 & 41. 
[Corvidae, Campophagidce .] 
506. -. On the migration of Ducks to the Marshall Islands. T. c. 
p. 41. [Anseriformes.) 
507. -. Ueber einen merkwiirdigen Buschwurger von Kamerun. T. c. 
p. 130. [Laniidce.] 
508. -. Neue Arten von Kaiser Wilhelm’s Land. T. c. pp. 130 & 131. 
[Caprimulgi, Laniidce .] 
509. -. Nachprlifung einiger afrikanischen Arten der Gattung Cin- 
nyris. T. c. pp. 169-172, 192. [Nectariniidce.) 
510. -. Zur Tierverbreitung in Afrika. T. c. pp. 189 & 190. [Cucidi, 
A ccipitriformes, Fringillidce. ] 
511. -. Uber Afrikanische Raken. T. c. pp. 191 & 192. [ Coracice .] 
512. -. Nucifraga macrorhyncha on migration in Germany. T. c. 
p. 192. [Corvidce.) 
513. -. Ueber Turacus finschi, n. sp. T. c. p. 190. [Musophagi.) 
-. See also Werther, C. W. (688). 
515. Reiser, O. ALerops persicus aus Attika. J. Ornith. 1899, p. 419. 
[. Meropes .] 
516. RIsrolle, L. Recherches sur l’histoire, la repartition, la diminution 
des mammiferes et des oiseaux des Alpes Francaises. Bull. Soc. Isere 
(4) iv, Oiseaux, pp. 316-336. 
517. Rey, E. Rhea-Eier aus den Pampas von Buenos Aires. Ornith. 
Monber. vii, p. 92. [Rheiformes.) 
518. -. What is the reason of the great variation in Cuckoos’ eggs ? 
Translated by W. Wells Bladen, Zoologist 1899, pp. 176-178. 
519. Rhoads, S. N. Notes on some of the rarer birds of Western Penn¬ 
sylvania. Auk xvi, 308-313. 
Riddell, E. M. H. Obituary. Ibis 1899, p. 666. 
520. Richardson, N. M. Report on the observations of the first appear¬ 
ances of birds in Dorset in 1898. P, Dorset Club xx, pp. 182-192. 
1899. [Vol. xxxvi.] c 5 
