The natural history of fishes, amphibians, & reptiles, or monocardian animals . the circle of the genus. GYMNETRES. PTERACLINiE. 25? Aspisurus Lac. Snout contracted, produced, and some-what tubidar; dorsal spines strong and remote;caudal fin small, truncate, or slightly Lamarckii. Frey. Atlas, pi. 63, fig. 1. Prionurus proper. General aspect of Aspisurus, butthe dorsal has an advancing spine ; the caudal spinesfixed; the tail small and slightly lunate. P. microlepidotus Lac. Cuv. v. pi. 292. Naseus Cuv, (fig- 76.) General as-pect of Pri-onurus, butthe front is prolonged into a horizo
The natural history of fishes, amphibians, & reptiles, or monocardian animals . the circle of the genus. GYMNETRES. PTERACLINiE. 25? Aspisurus Lac. Snout contracted, produced, and some-what tubidar; dorsal spines strong and remote;caudal fin small, truncate, or slightly Lamarckii. Frey. Atlas, pi. 63, fig. 1. Prionurus proper. General aspect of Aspisurus, butthe dorsal has an advancing spine ; the caudal spinesfixed; the tail small and slightly lunate. P. microlepidotus Lac. Cuv. v. pi. 292. Naseus Cuv, (fig- 76.) General as-pect of Pri-onurus, butthe front is prolonged into a horizontal horn; the caudal spinesare fixed, and the teeth conical; ventral fins with onlya few soft rays. N. fronticornis Cuv. (fig. *76.) Priodon. General shape and teeth of Acanthurus :the skin coriaceous ; but the tail is unarmed, and theventrals like Naseus. P. annularis. Cuv. and Val. pL 294. AxiNURUs Cuv. Body ovate, coriaceous ; belly veryshort; tail with a single square, sharp, and fixedplate j caudal fin lunate ; ventral fins very thynnoides. Cuv. pi. Tribe III, GYMNETRES. The Riband-fish. Body very long, excessively thin ; pectoral fin minute ;head large, truncate; eyes very large; mouth nearlyvertical. * 1. SuBFAM. and anal fins excessively General shape of Astrodermus, but the * The primary divisions are mostly representatives of II. S / 258 CLASSIFICATION OF FISHES, ETC. dorsal and anal fins are enormously developed; theformer commences on the crown, and the latter justbehind the eye; eyes and mouth very ocellatus. Cuv. and Val. pi. 271. 2. SuBFAM. GYMNETRIN^.Body excessively long and thin, the dorsals extendingthe whole length of the body; pectoral minute;ventral very large ; no anal fin. Argyctius Rafinesque. Dorsal fins generally two;the first very narrow at the base ; but greatly pro-longed, so as to form a sort of crest on the head. Argyctius proper, Rafinesque.* Dorsal fin one,
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Keywords: ., bookcentury1800, booksubj, booksubjectfishes, booksubjectreptiles
