Century Dictionary and Cyclopedia
- n. A genus of crane-flies, of the family Tipulidæ, characterized by the lateral processes of the antennal joints of the male, whence the name. There are 9 European and 7 North American species. The larvæ live in dead wood. The genus was founded by Meigen in 1803.
- n. A genus of spiders, of the family Theridiidæ, based by Blackwall in 1870 upon a Sicilian species, C. monticola.
- A class of Cœlenterata; formerly, an order of acalephs. They are pellucid gelatinous marine organisms, are radially symmetrical, and swim by means of eight meridional ciliated bands, rows of pectinations or ctenophores, whence the name. In form they are spheroidal or cylindroidal, rarely cestoid. They possess an esophageal tube and a gastrovascular system, and often two lateral retractile tentacles, but no corallum. They are hermaphrodite, reproduction being by ova discharged through the mouth. A localized senseorgan called a ctenocyst is present. True nematocysts are usually wanting, but are represented by organs known as fixing or prehensile cells, the base of which is a spirally coiled thread, while the free extremity is enlarged, projecting, and glutinous. The Ctenophora are divided by some into four orders, Lobatæ, Tæniatæ, Saccatæ, and Eurystomata; by others directly into a number of families. Such forms as Eurhamphæa, Cestum, Cydippe, and Beroe are severally characteristic of the main divisons. Also called
GNU Webster's 1913
- n. (Zoöl.) A phylum of invertebrates, commonly ellipsoidal in shape, swimming by means of eight longitudinal rows of paddles. They are commonly called the
comb jellies, because the separate paddles somewhat resemble combs. This phylum was formerly classified as a subdivision (class) within the Cœlenterata.
- n. comb jellies; sea acorns; a small phylum formerly considered a class of Coelenterata
“For the first time, HMG domain sequences from non-bilaterian phyla (Calcispongia, Demospongiae, Ctenophora and Cnidaria) have been included in a phylogenetic study of the SOX family.”
“The book also uses the archaic term "Coelenterata" as a phylum comprising the subphyla Cnidaria (jellyfish and anemones) and Ctenophora (sea gooseberries).”
“Cnidaria and Ctenophora are now classified as separate phyla, and the term "coelenterate" sent off to the rubbish heap of obsolete biological terms.”
“Ctenophora, which, indeed, he mentioned in his memoir as being related to the others, but reserved fuller consideration for a future occasion.”
“The members of this great division of the animal kingdom are the creatures which Huxley selected and placed together, with the addition of the sea-anemones and the medusa-like Ctenophora, which, indeed, he mentioned in his memoir as being related to the others, but reserved fuller consideration for a future occasion.”
“The property of emitting a phosphorescent light, sometimes spontaneously and sometimes on being stimulated, is likewise exemplified in the Ctenophora, a group resembling the Medusidge in the jelly-like character of their bodies, but more closely allied in structure to the Actinozoa.”
“Ctenophora and Medusæ, though one would have supposed he would, from its superficial resemblance to polyps, have placed it among the polyps.”
“Subsequently I had the wished-for opportunity of tracing the development of a Hyperia which is not uncommon upon Ctenophora, especially Beroe gilva, Eschsch. The youngest larva from the brood-pouch of the mother already possess THE”
“Most of them belong in the phylum Cnidaria, except for the comb jellies, which comprise the phylum Ctenophora.”
“The new species also belongs to Ctenophora, a "strange and poorly known" group of animals, said Gershwin, curator of natural science at the Queen Victoria Museum and Art Gallery in Tasmania.”
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