Branchio-gasteropoda

(= Branchifera).

Branchiopoda

(Gr. bragchia: and pons, foot). A legion of Crustacea, in which the gills are supported by the feet.

Branchiostegal

(Gr. bragchia, gills ; stego, I cover). Applied to a membrane and rays by which the gills are protected in many fishes.

Brevilinguia

(Lat. brevis, short; lingua, tongue). A division of the Lacertilia.

Brevipennatae

(Lat. brevis, short; penna, a wing). A group of the Natatorial Birds.

Bronchi

(Gr. brogchos, the windpipe). The branches of the windpipe (trachea), by which the air is conveyed to the vesicles of the lung.

Brontotherim;

(Gr. Brontes, the name of a giant; therion, beast). An extinct order of Tertiary Mammals.

Bruta

(Lat. brutus, heavy, stupid). Often used to designate the Mammalian order of the Edentata.

Brtozoa

(Gr. bruon, moss ; zoon, animal). A synonym of Polyzoa, a class of the Molluscoida.

Buccal

(Lat. bucca, mouth or cheeks). Connected with the mouth.

Bursiform

(Lat. bursa, a purse; forma, shape). Shaped like a purse ; sub-spherical.

Byssiferous

Producing a byssus.

Byssus

(Gr. bussos, flax). A term applied to the silky filaments by which the Pinna, the common Mussel, and certain other bivalve Mollusca, attach themselves to foreign objects.

Caducibranchiate

(Lat. caducus, falling off; Gr. bragchia, gill). Applied to those Amphibians in which the gills fall off before maturity is reached.

Caducous

Applied to parts which fall off or are shed during the life of the animal.

Caecal

(Lat. coecus, blind). Terminating blindly, or in a closed extremity. Gaecum (Lat. coecus). A tube which terminates blindly. Gespitose (Lat. coespes, a turf). Tufted.

Cainozoic

(SeeKainozoic.) Calcar (Lat. a spur). Applied to the "spurs" of Rasorial Birds; and also to the rudiments of the hind-limbs in certain snakes.

Calcareous

(Lat. calx, lime). Composed of carbonate of lime.

Calice

The little cup in which the polype of a coralligenous Zoophyte (Actinozoon) is contained.

Calycophoridae

(Gr. kalux, a cup; and phero, I carry). An order of the Oceanic Hydrozoa, so called from their possessing bell-shaped swimming organs (nectocalyces).

Calyptoblastic

(Gr. kaluptos, covered; and blastos, a bud). Applied by Prof. Allman to those Hydrozoa in which the nutritive or generative buds are provided with an external protective receptacle.

Calyx

(Lat. calyx, a cup). Applied to the cup-shaped body of Vorticella (Protozoa), or of a Crinoid (Echinodermata).

Campanularida

(Lat. campanula, a bell). An order of Hydroid Zoophytes.

Canine

(Lat. canis, a dog). The eye-tooth of Mammals, or the tooth which is placed at or close to the prsemaxillary suture in the upper jaw, and the corresponding tooth in the lower jaw.