Search the Dictionary

One of the Tectibranchiata. Also used adjectively.

Same as Tectibranchiata.

An order, or suborder, of gastropod Mollusca in which the gills are usually situated on one side of the back, and protected by a fold of the mantle. When there is a shell, it is usually thin and delicate and often rudimentary. The aplysias and the bubble shells are examples.

Having the gills covered by the mantle; of or pertaining to the Tectibranchiata. -- n.

A genus of marine mollusks of the order Tectibranchiata; the sea hare. Some of the species when disturbed throw out a deep purple liquor, which colors the water to some distance. See Illust. in Appendix.

A marine univalve shell of the genus Bulla and allied genera, belonging to the Tectibranchiata.

sca, in which the breathing organs are usually situated behind the heart. It includes the tectibranchs and nudibranchs.

One of the two tentacle-like organs on the back of the head or neck of a nudibranch or tectibranch mollusk. They are usually retractile, and often transversely furrowed or plicate, and are regarded as olfactory organs. Called also dorsal tentacles. See Illust. under Pygobranchia, and Opisthobranchia.…

Any tectibranchiate mollusk of the genus Aplysia. See Aplysia.

Any marine tectibranchiate gastropod of the genus Umbrella, having an umbrella-shaped shell; -- called also umbrella shell. Umbrella ant (Zoöl.), the sauba ant; -- so called because it carries bits of leaves over its back when foraging. Called also parasol ant. -- Umbrella bird (Zoöl.), a South American bird (Cephalop…