12 Aves. 
III. ayes. 
[Pycraft, W. P.] On a point in the mechanism of the Bill of Birds. 
Ibis, 1893, pp. 361-364. [See Scolopacidce , p. 28.] 
Raspail, X. [See Accipitrince , p. 32.] 
Regalia, G. Unghie ai diti I e II delle mano in Uccelli Italiani. Atti 
Soc. Toscana, xii, pp. 120-127. 
Reiciienow, A. Diagnosen neuer Vogelarten aus Central-Afrika. 
Ornith. Monber. i, pp. 29-32. 
[ Ploceidce , p. 40; Eulabetidce , p. 39; Paridce, p. 44; Muscicapidce , p. 48; 
Musophagi , p. 35 ; Gapitones , p. 37 ; Picince , p. 37.] 
. Diagnosen neuer Yogelarten aus Central-Afrika. T. c. pp. 60-62. 
[Laniidcv, p. 44; Nectar iniidce, p. 43 ; Sylviidce, p. 45 ; Strigiformes, p.33.] 
. Winke fur ornithologisches Sammeln in den Kolouien. T. c. 
pp. 98-100. 
. System und Genealogie. T. c. pp. 113-117 & 133-136. 
. Die von Herrn Dr. Fr. Stuhlmann in Ostafrika gesammelten 
Yogel. Jahresber. Hamburg. Anst. x, 1893, pp. 1-28, 
[Laniidas, p. 44 ; Muscicapid ce, p. 48.] 
. Die Yogelfauna der Umgebend von Bismarkburg. Mitth. deutsch. 
Sohutzgeb. vi, Heft 3. 
. [See also Strigiformes, p. 33; Cuculi , p. 36 ; Ploceidce , p. 40 ; 
Timeliidce , p. 47 ; Picince, p. 37 ; Caprimulgi , p. 34 ; Nectari- 
niidce , p. 43 ; Sylviidce, p. 45.] 
Reiser, O. Materialien zu einer Ornis Balcanica. Wiss. MT. Bosnien, 
■ ii, pp. 662-688. 
Rey, E. Einige oologisehe Uugeheurlichkeiten in der nouesten Auflago 
von Brelim’s Thierleben. Ornith. Monber. i, pp. 82-84. 
. [See Strigiformes , p. 33.] 
Rhoads, S. N. The Birds observed in British Columbia and Washing- 
ton during Spring and Summer, 1893. P. Ac. Philad. 1893, pp. 21-67. 
. Notes on certain Washington and British Columbia Birds. Auk, 
x, pp. 16-24. 
[Paridce, p. 44 ; Gorvidce , p. 38.] 
. [See also Vireoniclce, p. 45.] 
Richmond, C. W. Notes on a collection of Birds from Eastern Nicara- 
gua and the Rio Frio, Costa Rica, with notes, and a description of a 
supposed new Trogon. P. U. S. Mus. xvi, pp. 479-532 
[Ralliformes, p. 25; Coting iclce, p. 49; Buccones , p. 37; Trogones, 
P- 35.] 
■. [See also Cypselidce , p. 34.] 
