. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 350 On the Myology of the Chimpanzee <&c. crural lay internal to the psoas; otherwise the branches of the lumbar and sacral plexuses were not noteworthy. The coccy- geal gland was very small, far more indistinct than in the Macacus rhesus or cynomolgus. The brachial plexus, however, was arranged upon a type diverse from the ordinary human method of arrangement. The method of its branching can be better seen in the figure than it could be understood from a
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 350 On the Myology of the Chimpanzee <&c. crural lay internal to the psoas; otherwise the branches of the lumbar and sacral plexuses were not noteworthy. The coccy- geal gland was very small, far more indistinct than in the Macacus rhesus or cynomolgus. The brachial plexus, however, was arranged upon a type diverse from the ordinary human method of arrangement. The method of its branching can be better seen in the figure than it could be understood from a Brachial plexus of Chimpanzee. a, branch to fourth ; b, niuscuhir; c, suprascapular; d, anterior thoracic; e, posterior tlioracic ; /, circumflex ; ff, external cutaneous ; h, median ; 1, musculo-spiral; J, lesser internal cutaneous ; k, internal cutaneous ; /, ulnar; vi, posterior thoracic. The general conclusions whicli can be drawn from this dis- section are the following :—1. The facial muscles and head- muscles in this specimen were even more human than any of those hitherto described. The very strong risorius Santorini noticed by Vrolik may have existed; but the facial disease matted together the parts in this locality. 2. The neck- and laryngeal muscles were in general also far more anthropoid than pithecoid; this is especially true regarding the platysma, digastrics, omo-hyoid, and the laryngeal muscles, as well as the scaleni. 3. The back-muscles were anthropoid in the separateness of the levator anguli scapulse and the serratus magnus, in the non-development of the occipital rhomboid, bpt pithecoid in the presence of a dorsi epitrochlear and of a levator claviculge; the other shoulder-muscles were anthropoid. 4. The upper limb-muscles departed from tlie human type in the absence of a coronoid head of the pronator teres, of a. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and ap
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