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U. S. NATIONAL MUSEUM BULLETIN NO. 50, PART 5, PL. IV I. GYMNOCICHLAerratilis. 2. MYRMECIZAexsuI. 3. FORMICARIUS umbrosus.
Page:Birds of North and Middle America partV Ridgway.djvu/895
U. S. NATIONAL MUSEUM BULLETIN NO. 50, PART 5, PL. IV I. GYMNOCICHLAerratilis. 2. MYRMECIZAexsuI. 3. FORMICARIUS umbrosus.