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Show 454 PROF. A. H. GARROD ON GELADA RUEPPELLI. [May 20, In Macacus and Cynocephalus the anterior palatine foramina open into an osseous depression, which is continued for some distance fowards, almost to the alveolar margin. In Gelada they open directly upon the surface of the palate. In Macacus and in Cercopithecus a powerful transverse ridge of bone is seen to form the posterior boundary of the osseous palate. This is not seen in Gelada or in Cynocephalus. In Cynocephalus the mastoid process of the temporal bone is fairly developed. In Gelada, Cercopithecus, and Macacus it is obsolete. In Cynocephalus and Macacus tbe hamular process of the internal pterygoid plate of the sphenoid bone is much more superficial, and is placed more forward than in Gelada. The left lung is two-lobed, the lower being slightly the larger. The upper is nearly divided transversely into two moieties, of which the lower is a little the smaller. The right lung has four lobes, the (bifid) azygos being the smallest, the middle next in size, elongate and triangular. The obliquely cut upper lobe is smaller than the subquadrate largest lower lobe. There are three circumvallate papilla"; at the base of the tongue, arranged in the characteristic V. The following are intestinal measurements :- Male. Female. inches. inches. Small intestine 90 129 Large intestine 58 51 Caecum 3 3 The stomach much resembles that of man in shape, being a little more elongate. There is no appendix vermiformis to the sacculated caecum, which does not differ from that of the lower Old-World Monkeys. The colon is sacculated throughout. The spleen is three inches long, one and a half inch broad, being suboblong and slightly bifid at one extremity. The kidneys are ovate, not reniform, and with but a single pyramid in each. There is an os penis three quarters of an inch long. The vagina is very hirsute, with large broad transverse rugae. The uterus is pyriform. To understand the bearing of the details of the anatomy of the liver of the Gelada, it will be necessary to view the peculiarities of the organ in allied genera. This the inspection of a large number of species enables me to do. In the genus Macacus the liver is comparatively uncomplicated. The right and left lateral fissures are well marked, the umbilical fissure being less considerable and less constant in depth. The abdominal surfaces of the right and left central lobes are frequently |