. Anthropoid apes. Apes. ANATOMICAL STRUCTURE OF ANTHROPOID APES. 73 panzee's skull admits of a whole system of cavities communicating with each other, which are of the nature of the so-called sinuses present in the frontal, sphenoid, ethmoid, and maxillary bones of the human skull. In the chim- panzee, however, the sinuses are more extensive than in man, or even than in the gorilla. The' ng. 20,— i ... n . 1 011 young female cbimpauzee. large cavities 01 the forehead communicate with those of the nose and jaws. The sphenoidal sinuses and ethmoidal cells are large and deep. The gr
. Anthropoid apes. Apes. ANATOMICAL STRUCTURE OF ANTHROPOID APES. 73 panzee's skull admits of a whole system of cavities communicating with each other, which are of the nature of the so-called sinuses present in the frontal, sphenoid, ethmoid, and maxillary bones of the human skull. In the chim- panzee, however, the sinuses are more extensive than in man, or even than in the gorilla. The' ng. 20,— i ... n . 1 011 young female cbimpauzee. large cavities 01 the forehead communicate with those of the nose and jaws. The sphenoidal sinuses and ethmoidal cells are large and deep. The greater wings of the sphenoid bone and its pterygoid processes are provided with con- siderable cavities. The mastoid cells of the -tem- poral bones are in connection with the cells of the greater wings and pterygoid processes of the sphe- noid bone, and also extend through the squamous portions and zygomatic processes of the temporal bones, losing themselves in their upper part in the smaller cells of cancellous bone which are found between the outer and inner walls of the skull. These are of more uniform shape and size. The skeleton of the chimpanzee, in accordance with the smaller size of the species, is relatively of a slenderer build than that of the gorilla. The spinous processes of the seven cervical ver- tebrte are more slightly developed, and have undivided extremities. The transverse processes of the fifth and sixth cervical vertebrae are almost of the same shape as cervical ribs. There are thirteen dorsal vertebrae, somewhat laterally compressed:. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hartmann, Robert, 1832-1893. New York, D. Appleton and Co.
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