. Bulletin - United States National Museum. Science. THE SHORE FISHES OF PERU 135 Florida only the following differences were noticed: The snout projects slightly and is rather longer in the Atlantic specimens, being contained to in the head, whereas it is coterminal with the mandible in the Peruvian ones and is contained and in the head; the gape apparently is longer in the Atlantic species, being contained in the head times if measm-ed from the tip of snout, compared with in the Peruvian ones; the teeth are proportionately longer, slenderer, and less sharklike in th
. Bulletin - United States National Museum. Science. THE SHORE FISHES OF PERU 135 Florida only the following differences were noticed: The snout projects slightly and is rather longer in the Atlantic specimens, being contained to in the head, whereas it is coterminal with the mandible in the Peruvian ones and is contained and in the head; the gape apparently is longer in the Atlantic species, being contained in the head times if measm-ed from the tip of snout, compared with in the Peruvian ones; the teeth are proportionately longer, slenderer, and less sharklike in the Atlantic specimens, with finer serrations, especially on anterior margins, and the vomer has small teeth on the shaft in all the specimens examined, which the Peruvian specimens do not possess. Range.—Only the type material, two specimens from the Gulf of Guayaquil, taken near Cabo Blanco, Peru, is Figure 31.—Priodonophis equatorialis, new species. From the type, 795 mm. long, Cabo Blanco, Peru ( No. 127842). Inserts: A, Diagram showing shape and pro- portions; B, mouth spread open, showing teeth. Family OPHICHTHYIDAE: Snake Eels Body slender,^ scaleless; mouth large,^" horizontal; tongue present, usually adnate to floor of mouth; anterior nostril in upper lip, with a tube directed downward; gill openings lateral or subinferior, well separated; tail extending beyond dorsal and anal fins, usually ending in a rather sharp horny point. A single genus comes within the scope of the present work. Genus OPHICHTHUS Ahl, 1787 Body cylindrical or sub cylindrical; snout moderately pointed, gen- erally projecting beyond mandible; eye small, in anterior third of head; mouth large, the cleft extending below or beyond eye; teeth acute or conic, no special canines, in one or more series in jaws and on vomer; • Proportions of depth of body given in descriptions are not accurate, as some specimens became distorted in the process of preservation and others shriveled.
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