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Proc. Zoolog. Soc. 1830 p. 28 Prof Owen expressly states that in the orangs, he found Occip. front. — corrugator supercilia — zygomaticus major — levator anguli oris (what is this) depressor anguli oris — orbic. palp.

Platysma myoides — levat lab. sup. alæque nasi —

Hurrah. —

[Owen, Myology of the Simia Satyrus: "Mr. Owen commenced the reading of his account of the Myology of the Simia Satyrus, L. He confined himself to the notice of such muscles as are peculiar to that animal, and have not any analogues in the human frame; of those which, if analogous, deviate remarkably in their proportions and attachments; and lastly, of such as have been considered as of doubtful existence in the Orang.

The occipito-frontalis, which escaped the observation of Tyson and Dr. Traill (Wernerian Trans. iii.) in the Chimpanzee, and which some physiologists have asserted to be peculiar to man, is distinctly developed in the Orang Utan. Portions of this muscle were also found on the head of a Chimpanzee that had been flayed with great care, the ręst having been removed with the scalp, to which the tendinous part closely adheres.

The following muscles of the face were described, corrugator supercilii, levator labii superioris alæque naši, levator anguli oris, zygomaticus major, depressor anguli oris, orbicularis palpebrarum  and orbicularis oris. On reflecting the inner membrane of the lips, the depressores labii superioris and levatores labii inferioris were found of considerable breadth and strongly developed: their action in protruding the lips in a conical form has been frequently noticed by those who have had opportunities of observing the living animal.

The platysma myoides is of greater extent than in the human subject, and some of the fibres have a different direction, bearing a resemblance to the cervical portion of the panniculus carnosus in some quadrupeds, as the Beaver- and Guinea-pig."]