Columba gymnocyclus, Gray, a form of C. livia, i. 184.
Columba gymnophthalmos, hybrids of, with C. œnas, i. 193;
with C. maculosa, i. 194.
Columba intermedia, Strickland, a variety of C. livia, i. 184.
Columba leucocephala, ii. [155].
Columba leuconota, i. 182, 195.
Columba littoralis, i. 182.
Columba livia, ii. [29], [40];
the parent of domestic breeds of pigeons, i. 183;
measurements of, i. 134;