Observations on some species of the genera Tetrao and Ortyx, natives of North America with descriptions of four new species of the former, and two of the latter genus / by David Douglas.
Running title : Mr. Douglas on some species of the genera Tetrao and Ortyx.
"Read December 16, 1828."
Probably an extract from the Transactions of the Linnean Society of London.
Rocky Mountains region
FC 02 0203 no. 16839 AEU
CIHM/ICMH microfiche series ; no. 16839