The levator labii superioris terminates by numerous small tendons, some of which unite with those of opposite muscle. And others are inserted in to the nostrils.
A triangular muscle which originates inferior to the levator labii superiois represents the dilator naris lateralis. The other dilator muscles of the nostrils are absent.
The depressor labii inferioris is absent.
The corrugator supercilli extends from the fascia of the frontal bone and terminates in the upper eyelid at the medial angle.
The masseter has a remarkable development. It arises from the zygomatic arch and is prolonged beyond the posterior border of the ramus of the manidible. It is thick and its external surface is convex.
The temporalis is rendered stronger due to the large amount of tendinous material it contains. The muscle is larger as temporal fossa is more developed.
The lateral pterygoid is not distinct from the medial one.
The occipito-mandibularis is a strong, round muscle.
The stylo-hyoideus is in the form of very slender, pale muscular band and kerato-hyoideus is large.
The occipito hyoideus and hyoideus transversus are absent.
The parotido auricularis is longer and narrower.
The parieto –auricularis externus is extensive.
Both the cervico-auricularis externusand parieto-auricularis internus divide at their termination into two and these are inserted to both conchal and scutiform cartilage.
The sucto-auricularis externus is not distinct from the parieto auricularis externus.
