Assistant Curator of Birds (1881-1889), later Curator of Reptiles. Ornithological fieldwork included visits to the Commander Islands, Kamchatka, Puerto Rico, the Alps, the Southwestern US, the South Dakota Badlands, and Japan. Member of the National Academy of Sciences.

In Memoriam <PDF> (Auk)

In Memoriam <PDF> (Nat. Acad. Sci.)

In Memoriam <PDF> (Sys. Zoology)