TITLES. 
Aves 13 
Ridgway, R. Descriptions of some new Birds collected on the Islands 
of Aldabra and Assumption, North-west of Madagascar, by Dr. 
W. L. Abbott. P. U. S. Mus. xvi, pp. 597-600. 
[ Columbiformes , p. 23 ; Ralliformes , p. 24 ; Jbididce, p. 30 ; Pelecdni- 
formes , p. 31 ; Pycnonotidce , p. 47 ; Dicruridce, p. 39 ; Ploceuhe , p. 40.] 
. On a small collection of Birds from Costa Rica. T. c. pp. 
609-614. 
[Tanag ridte, p. 40.] 
. Catalogue of a collection of Birds made in Alaska by Mr. C. II. 
Townsend during the Cruise of the U. S. Fish Commission Steamer 
“ Albatros,” in the summer and autumn of 1888. T. c. pp. 663-665. 
. [See also P r ocellar iif or mes, p. 26 ; Formicariidte , p. 49 ; Mnio- 
iiltidce , p. 43 ; Phasianklce , p. 21 ; Cypseli , p. 34 ; and Tyran- 
iridcc, p. 49.] 
ROmer, A. Nachtrage zum Yerzeichniss der Saugethiere uud Vogel 
des Herzogtums Nassau. Jahrb. nassau Ver. xlv, 1892, pp. 
Rothschild, W. The Avifauna of Laysan and the neighbouring 
Islands ; with a complete history to date of the Birds of the 
Hawaiian possessions. London : 1893, fol. 
[Ralliformes, p. 24; P r ocellar iif or mes ) p. 26 ; Lariformes , p. 27 ; An- 
seriformes, p. 31 ; Pelecaniformes , p. 31 ; Drepanidce , p. 40; Fringillidce i 
p. 42 ; Sylviidce, p. 45.] 
• . Descriptions of three new Birds from the Sandwich Islands. 
Ibis, 1893, pp. 112-114. 
[. Drepanidce , p. 41; Meliphagidce , p. 43.] 
. [See also Ralliformes , p. 24 ; Pr ocellar iif or mes, p. 26 ; Lari- 
formes , p. 27 ; Drepanidce , p. 41 ; Fringillidce , p. 41 ; Scolopacidce , p. 29 ; 
ApteryqiformeSy p. 20; Sternbicv, p. 27; Psittaciformes ) p. 37.] 
& Hartert, E. [See Fringillidce, p. 41.] 
Roy, C. S. [See Newton, A.] 
Ryder, J. A. On the Mechanical Genesis of the Form of the Fowl’s 
Egg. P. Amer. Phil. Soc. xxxi, p. 208, 1893. 
Rzehak, E. C. F. Phanologische Beobachtungen aus dem Thale der 
schwarzen Oppa. MT. ornith. Yer. Wien, xvii, p. 37. 
. Des variieren der Vogeleier inneshalb der Art. Ornith. Mouber. i, 
pp. 173-175. 
. [See also Fringillidce , p. 42, and Falconidce , p. 33.] 
Salvadori, T. Catalogue of the Birds in the British Museum. 
Vol. xxi. Columbcc. London : 1893, 8vo, 676 pp., xv pis. 
