Blanchard, on flies attacking man, [517] n.
Blepharoceridae, [464]
Blind beetles, [205], [221], [233]
Blissus leucopterus, [548]
Blister-beetles, [269]
Blochmann, on founding new nests, [145]
Blood-sucking, Diptera, [457];
Mosquitoes, [467]
Blood-worms, [468]
Blow-flies, [511]