Gould determined the species in the collection made by Darwin during the
voyage of the 'Beagle,' and drew up the scientific portion of the report
on the birds, which forms vol. iii. of the "Zoology" of the voyage.
Owing to his departure for Australia the MS. was subsequently completed
and edited by G. R. Gray (see DARWIN, C.).
HOLMBERG, Dr. E. L.
Resultados científicos, especialmente zoológicos y botánicos, de los
tres viajes llevados á cabo por el Dr. Holmberg, en 1881, 1882, y
1883 á la Sierra del Tandil. Aves. Act. Ac. Nac. de Ciencias en
Córdoba, v. pp. 73-92.
[Seventy-nine species of birds are given as occurring in the Sierra of
Tandil, south of Buenos Ayres, and slight field-notes are added.]