Brachial cells: Hymenoptera; 1st (Nort.), = costal and sub-costal (Comst.) 2d (Nort.), = medial (Comst.); 3d (Nort.), = cubital (Comst.); 4th (Nort.), = 2d anal (Comst.). 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. Breast: the under surface of thorax or sternum. Breast-bone: in Cecidomyid larvae; a horny, more or less elongate process of the under side behind the mouth opening, supposed to represent the labium = anchor process. Breathing pores: see spiracle. Brevis: short. Brides: Homoptera; two pieces on the face, one each side of clypeus and lower part of front. Bridge: Odonata; a secondary longitudinal vein connecting the radial sector (Comst.) with Mi + 2, apparently forming a continuous part of the radial sector; it is the proximal portion of the subnodal sector of de Selys and Hagen. Bridge cross veins: Odonata; those cross veins, one or more in number, extending between M1 + 2 and the bridge (in de Selys between principal and subnodal sectors) proximal to the oblique vein. Brin: the fluid silk thread from each salivary gland. Bristle: a stiff hair, usually short and blunt. Broken: interrupted in continuity; as a line or band. Bronze: the color of old brass. Brood: all the specimens that hatch at about one time, from eggs laid by one series of parents and which normally mature at about the same time. Brunneus: a pure reddish dark brown [indian red]. Brush-like: antennae with the joints laterally produced and tufted with short hair or bristles: see barbated. Buccal: relating to the mouth cavity; rarely to the cheeks. Buccal appendages: the mouth parts excluding the labrum: see trophi. Buccal cavity: the mouth: = oral cavity. Buccal fissure: the mouth slit or opening: the opening on each side of the mentum. Buccate: blown up, distended; especially the cheeks. Bucculae: little cheeks or distended areas. Budding: applied to that form of agamic reproduction found in plant lice. Bulla: a blister or blister-like structure: the shield-like sclerite that closes the opening to the trachea in lamellicorn larvae: in Ephemerida a part of the costal area of the fore wing toward the tip, which is slightly swollen forward and furnished with more cross veins than elsewhere; practically the stigma, q.v. Bullate: blistered.