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 91
Pagina 158
... Adult male with two rows of alar spines ; 70 also a patch of about 18 thorns on either side in malar region abreast ... adult male , less so in female . Teeth in adult male , in transverse series , with thorn - like and somewhat recurved ...
... Adult male with two rows of alar spines ; 70 also a patch of about 18 thorns on either side in malar region abreast ... adult male , less so in female . Teeth in adult male , in transverse series , with thorn - like and somewhat recurved ...
Pagina 188
... adult females have shown wounds of this sort and a figure as high as 70 % has been recorded in one sample ; in general , then , at any time during the year a rough average of 50 % of the adult females show fresh and often severe uterine ...
... adult females have shown wounds of this sort and a figure as high as 70 % has been recorded in one sample ; in general , then , at any time during the year a rough average of 50 % of the adult females show fresh and often severe uterine ...
Pagina 259
... adult males , a little longer relatively in adult females ; its length in front of mouth about 1.3-1.7 times as long as distance between nostrils . Orbit about 75-100 % as long as distance between orbits in small specimens , relatively ...
... adult males , a little longer relatively in adult females ; its length in front of mouth about 1.3-1.7 times as long as distance between nostrils . Orbit about 75-100 % as long as distance between orbits in small specimens , relatively ...
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 - 1948 |
Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and rays John Tee-Van Anteprima non disponibile - 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