Barriers to dispersal, [73]

Batrachia, [30]

Bats in Bermuda, [269]

Bears of Europe and America, [14]

Beaver of Europe and America, [14]

Beetles of the Azores, [253]

remote affinities of some of, [255]

of the Galapagos, [284]

of St. Helena, [298]

of the Sandwich Islands, [318]