Basket-worms, [393]
Bataillon, on metamorphosis, [306]
Bates, H. W., on classification of butterflies, [344];
on homoeochromatism, [351];
on Megacephala, [201]
Batesian mimicry, [337], [339]
Bathyscia, [221]
Beak, [532]
Beauregard, on vesicating Insects, [275]