Spumella (spumela)

[NL., dim. of L. spuma, froth, foam: see spume.] The typical genus of Spumellidæ. S. guttula and S. vivipara are two Ehrenbergian species, abundant in fresh and salt infusions. Spumellaria (spū-me-lā'ri-ä), n. pl. [NL.: see Spumella.] An order of radiolarians. The central capsule is (usually permanently) spherical, more rarely discoid or polymorphous; the nucleus is usually divided only immediately before the formation of spores, into a number of small nuclei; the capsule-membrane is simple and pierced on all sides by innumerable fine pores; and the extracapsularium is a voluminous gelatinous sheath, without phæodium, and usually with zooxanthella. The skeleton consists of silica, or of a silicate, originally usually forming a central reticulate sphere, later extremely polymorphous, more rarely rudimentary or entirely wanting. The order is divided into several families. spumellarian (spū-me-lā'ri-an), a. and n. I. a. Of or pertaining to the Spumellaria. II. n. A member of the Spumellaria . Spumellidæ (spū-mel'i-dē), n . pl . [NL., Spu mell a + -idæ .] A family of tri mast i gate pan to stomatous infusorians, typified by the genus Spumella. They have one long and two short flagella, and are adherent by a temporary pedicle. spumeoust (spūmē-us), a. [ spume us , frothy,