figured, i. 135;
skull figured, i. 163;
lower jaw figured, i. 164, 168;
scapula figured, i. 167.
Columba luctuosa, i. 182.
Columba migratoria and leucocephala, diminished fertility of, in captivity, ii. [155].
Columba œnas, i. 183;
crossed with common pigeon and C. gymnophthalmos, i. 193.
Columba palumbus, i. 193, ii. [350].
Columba rupestris, i. 182, 184, 195.