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Parandes, a new Cixiid genus (Homoptera, Fulgoroidea)
Manuscript about planthoppers of the Parandes genus
Muir, Frederick, 1872-1931
Manuscript about hawks and eagles of the Philippines
McGregor, Richard C. (Richard Crittenden), 1871-1936
Philippine passerine birds III: Threshes, warblers, wood swallows, and shrikes
Manuscript about threshes, warblers, wood swallows and shrikes of the Philippines
McGregor, Richard C. (Richard Crittenden), 1871-1936
Notebook containing notes on Edward Clodd's "The story of 'primitive' man," a list of books and articles, some field notes
The Anthomylid genus Dichaetomya Malloch (Diptera) in the Philippines
Typescript about Anthomyiidae flies from the Philippines
Malloch, John Russell, 1875-1963
Philippine kingfishers, hornbills and bee-eaters
Manuscript about kingfishers, hornbills and bee-eaters of the Philippines
McGregor, Richard C. (Richard Crittenden), 1871-1936
Philippine cuckoos, barbets, woodpeckers, and broadbills
Manuscript about cuckoos, barbets, woodpeckers, and broadbills of the Philippines
McGregor, Richard C. (Richard Crittenden), 1871-1936
Philippine passerine birds II: Cuckoos, shrikes, bulbuls, and babblers
Manuscript about cuckoos, shrikes, bulbuls, and babblers of the Philippines
McGregor, Richard C. (Richard Crittenden), 1871-1936
Philippine passerine birds VI: Starlings, mynahs, orioles, drongos, and crows
Manuscript and typescript of starlings, mynahs, orioles, drongos, and crows
McGregor, Richard C. (Richard Crittenden), 1871-1936
Correspondance related to Philippine Journal of Science
Correspondence related to the Philippine Journal of Science, especially R.C. McGregor, Associate Editor
McGregor, Richard C. (Richard Crittenden), 1871-1936