. Synopsis of the fishes of North America [microform]. Fishes; Poissons. CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. Caudal spiue 1^ times width of mouth. Spiracles very large. Color nearly uniform brownish. L. 8 feet. Cape Cod to Florida; common. (Perhaps includes more than one species.) .,:-;., (liaia centrura Mitchill, Trans. Lit. & PhiL Soc. N. Y. i, 471): Pastinaca ha«talu De- kay, New York Fauna, Fishes, 373: Trygon hastata Giintber, viii, 476.) Ujiper and lower caudal folds well developed. {Daayatia.) 63> D. sayi (Le Sueur) Goode & Bean. Disk rhomboidal, a little broader
. Synopsis of the fishes of North America [microform]. Fishes; Poissons. CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. Caudal spiue 1^ times width of mouth. Spiracles very large. Color nearly uniform brownish. L. 8 feet. Cape Cod to Florida; common. (Perhaps includes more than one species.) .,:-;., (liaia centrura Mitchill, Trans. Lit. & PhiL Soc. N. Y. i, 471): Pastinaca ha«talu De- kay, New York Fauna, Fishes, 373: Trygon hastata Giintber, viii, 476.) Ujiper and lower caudal folds well developed. {Daayatia.) 63> D. sayi (Le Sueur) Goode & Bean. Disk rhomboidal, a little broader than long, the muzzle moderately promiiieut. Width of mouth contained about 2i times in the length of the snout. Tail with two well-developed folds, the lower fold consider- ably the larger, both smaller than in Z). diptenirm. Tail slender, prickly, nearly twice as long as the disk; its spiue extremely long; its length 2J times the width of the mouth. Skin smooth in the youn^^, becoming roughish with age. Several rather strong recurved spines along the middle line of the back. Spiracles moderate. Buccal papillic 5 (7). Color brownish. South Atlantic States to Brazil. (liaja say Le Sueur, Jomu. Ac. Nat. Sci. Phila. 1817, 42: Trygon myi Dumdril, Elasraobrauch. 603: Trygon pastinaca part GUuther, viii, 478.) 63. D. dipterurus Jordan & Gilbert. Disk rhomboid, slightly broader than long, anterior margins nearly straight, meeting anteriorly in a very obtuse angle; posterior margins curved; lateral angles rounded; tail nearly half longer than the di«k, with a conspicuous cutaneous fold below and a smaller but evident one above; jaws considerably arched; buccal papilhe 3; teeth |^. Young perfectly smooth. Adult with a row of low but rather stout tubercles on the median line of the scapular region and two others on the humenil region. Tail with small prickles. Caudal spine long, its length nearly 3 times the width of the mouth. Color bluish brown, nearly plain. L. 6 feet or more.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectfishes, bookyear1882
