. On the anatomy of vertebrates [electronic resource] . ike a hedgehogs skin. In the Raptores the tongue is of a moderate length, broad,and somewhat thick, and has a slight division at the tip. In theVultures its sides can be voluntarily approximated so as to forma canal, and its margins are provided with retroverted spines. Inthe Haven it is bifid at the apex : it is more deeply cleft in thec Nutcracker. In the Struthious Birds, in many of the Waders, and in thePelecanidce, the tongue is remarkably short, as it is likewise inthe Kingfisher, fig. 75, C. In the Snipe it is as remarkable for its
. On the anatomy of vertebrates [electronic resource] . ike a hedgehogs skin. In the Raptores the tongue is of a moderate length, broad,and somewhat thick, and has a slight division at the tip. In theVultures its sides can be voluntarily approximated so as to forma canal, and its margins are provided with retroverted spines. Inthe Haven it is bifid at the apex : it is more deeply cleft in thec Nutcracker. In the Struthious Birds, in many of the Waders, and in thePelecanidce, the tongue is remarkably short, as it is likewise inthe Kingfisher, fig. 75, C. In the Snipe it is as remarkable for itslength and slenderness, ib. A. In the Fieldfare (Turduspilaris)the sheath is resolved into fine filaments at the apex of thetongue, ib. B. In the Parrots the tongue is thick and fleshy, is terminallytufted in Lories, serves admirably to keep steady the nut or seedupon which the strength of the mandibles is exerted, and is appliedto the kernel so extracted, as if to ascertain its sapid qualities. The following are the muscles of the tongue in Birds. 7G. Muscles of the tongue of the Fieldfare {Turdus ■pilaris). 1st. The Mylo-hyoideus: this is a thin layer of fibres attached tothe lower and inner border of the lower jaw, and running trans-versely to a mesial tendon which separates them, and extends tothe urohyal. It raises the tongue towards the palate. 2nd. The Stylo-hyoideus, fig. 76, a, arises from the upper andback part of the lower jaw, and is inserted into the thyrohyal at 1 XXI-. 154 ANATOMY OF VERTEBRATES. its junction with the basihyal. In some birds it divides into threeor more portions: the posterior descends obliquely forward, andis inserted into the tendinous commissure of the mylohyoideus:the middle portion is inserted into the urohyal: the anterior fas-ciculus is inserted into the side of the basihyal above the trans-verse hyoglossus. The actions of these different portions varyaccording to their insertion ; the first and second depress the apexof the tongue by ra
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Keywords: ., bookcentury1800, booksubject, booksubjectbirds, booksubjectfishes
