Biemarginate: twice emarginate; with two excisions.
Bifarious: pointing in opposite directions.
Bifasciate: with two bands or fascia.
Bifid: divided into two parts; split; applied in Coleoptera to tarsal claws which are divided so that the claws lie side by side: see biparted.
Biflabellate: antennae with fan-like process on two sides.
Bifurcate: divided, not over half its length, into two dull points; forked.
Bifurcation: a forking or division into two: the point at which a forking occurs.
Biguttate: with two drop-like spots.
Bijugum: in two pairs.
Bilamellar: divided into two lamina or plates.