• Webster's Revised Unabridged Dictionary
    • n. pl Lophobranchii (Zoöl) An order of teleostean fishes, having the gills arranged in tufts on the branchial arches, as the Hippocampus and pipefishes.
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Century Dictionary and Cyclopedia
    • lophobranchii An order of teleost fishes having the branchial skeleton imperfect, the superior and basal branchihyals and pharyngeals wanting, and the gills not lamellar, but developed as loop-like or tuft-like lobes, whence the name. In Cuvier's system it was the fifth order of fishes, defined as having the jaws free and complete, and the gills divided into small round tufts disposed in pairs along the branchial arches. The genus Pegasus, as well as the typical lophobranchs, was referred to this order by Cuvier. Pegasus, having normal lamelli-form gills and being the type of a distinct family Pegasidæ, has been removed from the Lophobranchii and referred to the Acanthopterygii, or to a special suborder Hypostomides of Teleocephali. The order consequently now includes only the families Syngnathidæ and Hippocampidæ, or pipe-fishes and sea-horses, constituting the suborder Syngnathi, and the Solenostomidæ, alone representing the Solenostomi. (See cut at Hippocampidæ.) All the Lophobranchii have a dermal skeleton composed of angular plates having a radiate or stellate ossification. Most of the species are marine. Also Lophobranchia, Lophobranchiati.
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Webster's Revised Unabridged Dictionary
NL., fr. Gr. lo`fos a crest or tuft + bra`gchion gill


In literature:

LOPHOBRANCHII, marsupial receptacles of the male, ii.
"The Descent of Man and Selection in Relation to Sex" by Charles Darwin