Collocalia, [421]-[423] f.;

fossil, [426];

C. francica, [424];

C. fuciphaga, [423] f.

Colopterus, [473], [474]

Colour of feathers, [3] f.

Columba, [328], [343];

fossil, [350];

C. affinis, [344];

C. araucana, [344];