. On the anatomy of vertebrates [electronic resource] . ward, expand-ing, and filling the peculiar grOOVeS Of the Skull (vol. ii. Alinasal cartilage (») and muscles of trunk, Tapir. p. 449) between the nasal bones xcmand orbits, 0 : here the cartilages are semiconvolute, convex, andentire outwardly, excavated on the inner side, the cavity beino-continued by a groove into the nasal one at the sides of the outeraperture : from the character of the lining membrane, it may beregarded as an extension of Jacobsons fossa. The levatorrostri, or raiser of the short proboscis, fig. 155, a, arises from t
. On the anatomy of vertebrates [electronic resource] . ward, expand-ing, and filling the peculiar grOOVeS Of the Skull (vol. ii. Alinasal cartilage (») and muscles of trunk, Tapir. p. 449) between the nasal bones xcmand orbits, 0 : here the cartilages are semiconvolute, convex, andentire outwardly, excavated on the inner side, the cavity beino-continued by a groove into the nasal one at the sides of the outeraperture : from the character of the lining membrane, it may beregarded as an extension of Jacobsons fossa. The levatorrostri, or raiser of the short proboscis, fig. 155, a, arises from theprocess of the lacrymal, runs in a fibrous sheath, converging toits fellow, and is inserted into the upper or fore-side of the partwhich, together, they raise, or, acting separately, draw to theirown side. A broader muscle, (retractor labii, b, from the sameorigin expands to its insertion at the side of the labial part of thebase of the proboscis. Beneath this is the muscle, c, whichrising from the lower border of the lacrymal, spreads upon the r 2. 212 ANATOMY OF VERTEBRATES. side of the proboscis, and is intimately connected with the f orbi-cularis oris/ d d; e is the zygomatic, f the depressor anguli oris,g the The external nose of the Rhinoceros is com-bined with the upper lip and prolonged in a minor degree, butwith a like arrangement of muscles, for prehensile nose of the Horse is chiefly peculiar for the power of thedilating and contracting each nostril, such movements being sub-served by a lateral semilunarcartilage, fig. 156, k}; by a de-pression or fold of contiguousskin, called false nostril inHippotomy, and by the homo-logues of the muscles of thecombined nose and lip of theTapir. In fig. 156, a is thee levator rostri; b is the ( re-tractor labii alreque nasi; c isthe muscle called transversusnasi, in Hippotomy ; e is thezygomaticus; f marks the in-sertion of a muscle, e pyrami-dalis of Hippotomy, whicharises by a slender tendon fromthe
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