. The fishes of North and Middle America [microform] : a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Fishes; Fishes; Poissons; Poissons. ''j>rr^,: .»= ^â¢. .â â¢^'.vfTjfr-^y/y-^ffj-ir-' Jordan and Evermann,âFishes of North Ametica. 2496 braDes somewhat united, free from the isthmas; no psendobranchiiu; no pyloric caeca; vertical fins very low, confluent, without Hpines; no ven- tral fins; pectoral fins present or absent. Small shore fishes of tropical seas, often living in shells of moUusks, c
. The fishes of North and Middle America [microform] : a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Fishes; Fishes; Poissons; Poissons. ''j>rr^,: .»= ^â¢. .â â¢^'.vfTjfr-^y/y-^ffj-ir-' Jordan and Evermann,âFishes of North Ametica. 2496 braDes somewhat united, free from the isthmas; no psendobranchiiu; no pyloric caeca; vertical fins very low, confluent, without Hpines; no ven- tral fins; pectoral fins present or absent. Small shore fishes of tropical seas, often living in shells of moUusks, cchinoderms, etc, being especially often commensal with the pearl oyster and with the larger Holoihuria. Genera 3; species 12. {Ophidiida;, group Fieraafenna, Giinther, Cat., iv, 381-384, 1862.) a. Pectoral fins present; no distinct caudal ilu; gill membranes coniiected anteriorly only. FiBBASFER, n52. 95a. FIERASPER, Cuvier. Piera^er, Cuvier, Rdgne Anim., Ed. 1, ii, 239,1817 Kirnberhe--ae\u), Echiodon, Thompson, Proc. Zool. Soc. London 1837,55 {drummondi). Diaphaaia, Lowe, Proc. Zool. Soc. London 1843,02 {aeus). Oxybele$, Richardson, Voy. Erebus and Terror, Fishes, 74,1844-48 (homei). I'orobronehuM, Kaup, Ann. Mag. Nat. Hist. 1860,272 (larva of Fierasfer acu*). CarapH*," Gill, Proc. Ac. Nat. Sci. Pliila. 1864,152 (aft*r Kafinesque, 1810; not type). Vexillifer, Gasco, Bull. Assoc. Nat. Me<l. Napoli 1870,59 (larva of Fierasfer aeus). L^royia, Jones, Zoologist, ix, 1874,3838 (hemiudensxa). Gill membranes little connected, leaving tho, isthmus bare. No distinct caudal fin; pectoral fins developed. The species of this genus are not well known, and their characters and nomenclatiires are uncertain. It is not unlikely that the American species are all reducible to one, Fierasfer affinia or dubius, but our scanty material will not justify us in taking this view. (Fierasfer, the ancient name, from ^ispdc, sleek and shining.) a. Vomer with canine teeth; pectoral about ^ l
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