of Halictus, [24], [25];

of Odynerus, [74]

Bursa copulatrix, [321]

Burying-beetles, [221]

Butterflies, [341] f.

Buzzing, [19]

Byrrhidae, [242], [255]

Byrrhus pilula, [242]

Bythoscopidae, [578]

Byturus, [241]