Brachial veins: of primaries in Hymenoptera, originate at base, run parallel to inner edge toward anal angle; often connected with the cubital cellules by means of recurrent venules.
Brachium: the fore tibia.
Brachycerous: Diptera; with short, 3-jointed antennae.
Brachypterous: with short or abbreviated wings.
Brachyostomata: brachycerous Diptera with short proboscis.
Brain: that ganglion of the nervous system which lies in the head above the oesophagus; formed of the first three primitive ganglia: see supra-oesophageal.
Branchiae: air tubes or gill-like processes of aquatic larva;.
Branchial: relating to the gills or branchiae.
Branchiate: supplied with gills or bronchia.
Brassy: yellow, with the lustre of metallic brass.