. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. GILLS OF FISHES. 487 respiratory character before they are absorbed. Accessory respiratory organs, acting chiefly as a reservoir or filter of water,' are developed from the npper part of the pharynx in the Climbing Perch [Auahus scandms) and allied fishes of aniphibions habits; they are complex folds of slightly yascidar membrane supported on sinuous plates developed from the pliaryngo- and epi-branchials of the ante- 305 rior branchial arches, fig. .325, 4S ; whence this family of fishes is called Lahjjrhithi- hruncldi.
. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. GILLS OF FISHES. 487 respiratory character before they are absorbed. Accessory respiratory organs, acting chiefly as a reservoir or filter of water,' are developed from the npper part of the pharynx in the Climbing Perch [Auahus scandms) and allied fishes of aniphibions habits; they are complex folds of slightly yascidar membrane supported on sinuous plates developed from the pliaryngo- and epi-branchials of the ante- 305 rior branchial arches, fig. .325, 4S ; whence this family of fishes is called Lahjjrhithi- hruncldi. An accessory branchial ramified vascular organ is similarly situated in the gciuis thence called Ileterobraackus. It re- sembles a miniature ti-ec of red coral, is hollow and muscular, and serves not only for resjiiration, but, as Cuvier suggests, to aid in propelling the arterialised blood into the â T j_l i~\ ^ ' / A 1 ' \ llfic reservoir, Amaf' xxiii aorta. in the L-uchia (Amp/npnous), a finless snake-like fish, which lurks in holes in the marshes of Bengal, the second branchial arch supports a few long fibrils, and the third a simple lamina fringed at its edge; the first and fourth arches have not even the rudiment of a gill. The branchial function is transferred to a receptacle on each side of the head, above the branchial arches, covered by the upper part of the oper- cular membrane; these receptacles have a cellular and highly vascular internal surface; the cavity communicates with the mouth by an t)pening between the hyoid and first branchial arch, and receives its blood from the terminal bifurcation of the branchial artery, and also from the efferent vessels of the rudi- mental gills. Those from the supplemental lung-like vascular sacs are collected into two trunks, which unite with the posterior unbranched branchial arteries to form the aorta. Thus about one half of the volume of blood transmitted from the heai't is con- veyed to t
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