The Encyclopedia britannica; a dictionary of arts, sciences, and general literatureWith new maps, and original American articles by eminent writersWith American revisions and additions, bringing each volume up to date . vci^. It attains the length of 8 feet. luia —Tueth variable, f]om 26 to i,o on each side ofeacH jaw ;.those at the posterior part with a distinct tubercle at the iniwr sideof the base of the crown. Vertebrae : C 7, D 13, L 3, C 18 ; total processes of lumbar vertebrae very broad. , Sternum,short and broad, and consisting of a single segment only. Dorsalail a mere
The Encyclopedia britannica; a dictionary of arts, sciences, and general literatureWith new maps, and original American articles by eminent writersWith American revisions and additions, bringing each volume up to date . vci^. It attains the length of 8 feet. luia —Tueth variable, f]om 26 to i,o on each side ofeacH jaw ;.those at the posterior part with a distinct tubercle at the iniwr sideof the base of the crown. Vertebrae : C 7, D 13, L 3, C 18 ; total processes of lumbar vertebrae very broad. , Sternum,short and broad, and consisting of a single segment only. Dorsalail a mere ridge. The long cylindrical rostram externally furnishedwith -scattered, stout, and crisp hairs. .One species- only is geoffrmsis, about 8 feet iailength^habiting the upper Amazonand its tributary stpeams! Pontoporia.—Teeth 50 to 50on-eacV side of each ,-»-Bith- xringulum at the base-of the crown. Jaws- very long and : C 7 T> 10, L 5, ; tofaUK Transverse processes of thsInmbar vertebrae extremelybroad; Sternum Kilongated, coiHposedof se^ Dorsalfiu rathersmall, ..Exfeinal respiratory .aperture, transverse;. FJS^iS.—PontttptD-ia 5/iinPi7/it.^Froin alatine • Symphysis of mandibleshort or moderate, never exceeding one-third of the length of Lacrymal boue v,i>i distiuct from the of the dorsal-vertcbr:e- gradually transferred from thearches to the bodies of the vertebrae without any sudden break, andbecoming posteriorly contimious serially with ..the transverse pro-cesses of the lumbar vertebra;.
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Keywords: ., bookauthorbaynesth, bookcentury1800, bookdecade1890, bookyear1892
