Cal´car, n. Spur; sharp horn-covered bone-cored process on the shank of many birds; also, similar horny process on the metacarpal bone.

Calcarat´us, a. Spurred.

Calca´reous, a. Chalky. A cormorant’s egg is covered with calcareous substance.

Calcif´ic, a. Calcifying; an epithet of that portion of the oviduct where the egg-shell is formed.

Calig´ula, n. Same as Boot (which see).

Cal´lus, n. New bony matter joining a fracture.

Calypte´ria, n. pl. Tail-coverts; the smaller feathers underlying or overlying the base of the tail. (Little used.) See Crissum and Tectrices Caudæ. (71.)

Ca´lyx, n. Pedicellated ovarian capsule of two membranes with lax tissue and vessels, rupturing at a point called the stigma to discharge the ovum, then collapsing and becoming absorbed.

Campte´rium, n. Front and outer border of wing as far as the bone extends. (Little used.) (95.)

Canalic´ulum, n. Little groove.