Procne, [523]-[525];

P. furcata, [525];

P. tapera, [523]-[525]

Procnemial, [22];

process, of Colymbiformes, [49]

Procnias, [575], [576]

Procoelous, [6]

Prodotiscus, [451] f.;

P. insignis, [452];

P. regulus, [452]