. Contributions to North American Ichthyology [microform] : based primarily on the collections of the United States National Museum. Ichthyology; Fishes, Fresh-water; Fishes; Ichtyologie; Poissons d'eau douce; Poissons. GENUS CARPIODES. 191 the fleshy portiou of the cheek below; foiitanelle always i^resent, well developed. IMouth always small, horizontal .'ind inferior, the inaudible less than one third the length of the head, the lips thin, the upper protractile, mirrow, thvi lower quite narrow, /^-shaped, or rather fj-sbaped, behind; both lips feebly plicate or nearly smooth, the plica) ofte
. Contributions to North American Ichthyology [microform] : based primarily on the collections of the United States National Museum. Ichthyology; Fishes, Fresh-water; Fishes; Ichtyologie; Poissons d'eau douce; Poissons. GENUS CARPIODES. 191 the fleshy portiou of the cheek below; foiitanelle always i^resent, well developed. IMouth always small, horizontal .'ind inferior, the inaudible less than one third the length of the head, the lips thin, the upper protractile, mirrow, thvi lower quite narrow, /^-shaped, or rather fj-sbaped, behind; both lips feebly plicate or nearly smooth, the plica) often more or less broken up; jaws without cartilaginous sheath; muciferous system moderately developed; opercular apparatus well developed, the sub- opercle broad, the operculum in the adult more or less rugose; isthmus moderate ; pharyngeal bones remarkably thin and laterally compressed, withashallowfurrowalongtheanteriormarginon the inside,and another more central one on the outline of the enlarged surfaces; teeth very small, compressed,, nearly equally thin along the whole inner edge of the btme, forming a fine comb like crest of minute serratnres; their cutting edge rises above the inner margii. into a prominent point. Gillrakors of anterior arch slender and stiff above, becoming reduced downwards. Body ovate or oblong, the dorsal outline more or less arched, the ventral outline more nearly straight, the depth from half to one third tbc length, the sides compressed; the back notably so, forming a sort of carina; caudal peduncle short and deep; scales large, about equal over the body, their posterior margins slightly serrate; lateral line well developed, nearly straight, with 34 to 41 scales, 12 to 15 scales in a cross-row from dorsal to ventrals; dorsal fln beginning near the middle of the body, somewhat in advance of ventrals, falcate, its anterior rays very much elevated and usually filamentous, their height ranging from } to Ij^ the length of the base of the fln, the number
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Keywords: ., bookce, bookdecade1870, booksubjectfishes, booksubjectichthyology
