Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and raysJohn Tee-Van Sears Foundation for Marine Research, Yale Univ., 1953 |
Dall'interno del libro
Risultati 1-3 di 70
Pagina 507
... edge pos- terior to edge of nasal curtain , centrally , by a distance only about 3.3 times as great as breadth of pupil ; loose , flexible , forming an effective valve to prevent egress of water from mouth when walls of pharynx are ...
... edge pos- terior to edge of nasal curtain , centrally , by a distance only about 3.3 times as great as breadth of pupil ; loose , flexible , forming an effective valve to prevent egress of water from mouth when walls of pharynx are ...
Pagina 547
... edge , about 1.5 times as long as broad , its length about 15 % as great as length of eye ; distance from its own rear edge to free edge of upper lip about as long as its own length . Width of mouth , when closed , a little less than ...
... edge , about 1.5 times as long as broad , its length about 15 % as great as length of eye ; distance from its own rear edge to free edge of upper lip about as long as its own length . Width of mouth , when closed , a little less than ...
Pagina 554
... edge to rear edge of upper lip about twice as great as its own length . Width of mouth , when closed , about 2 , as great as length of eye . Tongue with a few fleshy swellings and many smaller papillae of various sizes . Dental plates ...
... edge to rear edge of upper lip about twice as great as its own length . Width of mouth , when closed , about 2 , as great as length of eye . Tongue with a few fleshy swellings and many smaller papillae of various sizes . Dental plates ...
Sommario
SAWFISHES GUITARFISHES SKATES and RAYS | 1 |
Suborder Myliobatoidea | 331 |
Dasyatis say | 378 |
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Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and rays John Tee-Van Visualizzazione estratti - 1953 |
Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and rays John Tee-Van Visualizzazione estratti - 1948 |
Parole e frasi comuni
Acad Amer axils of pectorals batoids Bigelow and Schroeder biol Brazil breadth Bull Carolina cartilage caudal fin center of cloaca Chesapeake Bay claspers Coast color comp concave Copeia Dasyatis Dermal denticles descr distance between inner dorsal fin embryos Evermann exposed nostrils eyes fathoms female Florida Fowler front of mouth front of orbits Garman genus gill openings Gulf Gulf of Maine Harv Hist inner ends Jersey Jordan Lacépède length of base Linnaeus listed lobe long as distance Lower surface mature males Müller and Henle Narcine nasal curtain pectoral fins pelvic fins Philad Poiss posterior margin prickles Proc Raja rearward Rio de Janeiro rostral rounded Sawfishes side Skates spiracles Study Material tail spine teeth thorns tip of snout tip of tail Torpedo transverse Trygon type species U. S. Bur U. S. Comm U. S. nat upper surface Woods Hole Zool