Blastophaga grossorum, [547] f.

Blatta, [240]

Blattidae, [201], [220]-[241], [240];

parasites of, [563]

Blattinae, [240]

Blind Insects, [217], [233]

Blood, [132]

Blood-gills, [479]

Blowfly, egg, [145];

metamorphosis, [163]