[45]. Birds of the Colorado Valley, p. 75.

[46]. In a recent letter Mr. Stephens adds:—“From my own observations I should characterize the respective haunts of the Arizona Thrashers as follows: H. lecontei is exclusively a bird of the deserts. H. bendirei is a desert bird approaching the valleys. H. palmeri occurs along the edge of deserts, occasionally appearing in valleys. H. crissalis haunts valleys and broad cañons, seldom venturing into the deserts.”

[47]. The name “os prominens,” proposed by Dr. Shufeldt, has been adopted by me because it seems eminently proper that so large a sesamoid, frequently equalling the patella in size, should receive a distinctive appellation.

[48]. The English Sparrow, which is but an indifferent flyer, can be deprived of one-half of the secondaries and one-fourth of the primaries of both wings, in the long axis of the pinion, without apparently impairing its flight. See Pettigrew.

[49]. I find that this statement must be modified in regard to Gulls, if not retracted altogether, for since this paper was written I have found the os prominens in Larus glaucus and L. dominicanus. It is present as a small, elongated, trihedral prism, imbedded in the tendon of the extensor patagii longus, and playing over the flattened surface of the scapho-lunar.

[50]. [See p. 122 of this issue.—Edd.]

[51]. For an account of its breeding at Houlton see this Bulletin, Vol. IV, pp. 37–39.

[52]. The Coues Check List of North American Birds, revised to date and entirely rewritten under direction of the author, with a Dictionary of the Etymology, Orthography and Orthoëpy of the scientific names, the Concordance of previous lists, and a Catalogue of his Ornithological Publications. Boston: Estes and Lauriat. 1882. 1 vol. roy. 8vo. pp. 165.

[53]. Extract from a Report of Exploration by Professor John Macoun, M. A., F.L.S. Report of Department of Interior (n. d., n. p. Ottawa, 1881? 8vo, pp. 48.)

[54]. A Revised List of the Birds of Brandon, Vt. and vicinity. By F. H. Knowlton. The Brandon Union (newspaper), February 10, 1882. See also, by the same author:—A Partial List of the Birds of Brandon, Vt. The Brandon Union, December 13, 1878.