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Show 1883.] ON THE ANATOMY OF SUS SALVANIUS. 413 4. Notes on the Anatomy of Sus salvanius (Porcula salvania, Hodgson).-Part I. External Characters and Visceral Anatomy. By J. G. GARSON, M.D., F.Z.S. [Received June 5, 1883.] One of the Pygmy Hogs recently acquired by the Society having died, it was put into m y hands for examination. In the present communication I intend only to treat of the external characters, and the digestive, circulatory, and respiratory organs and brain, reserving the muscular anatomy, as well as that of the vessels, nerves, aud other parts of the body, and the osteology, for a subsequent communication. The body is covered with brownish-black bristles, sparsely set on the abdomen, especially between the legs, on the sacral region, and hind limbs. The posterior surface of the ears is naked ; and there are only a few fine hairs on their anterior surface. The tail is hairless. A slight increase in the thickness and length of the hair and bristles is observable on the back of the neck. The hair is thickest on each side of the body behind the shoulders. There is no underhair present at any part of the body. The colour of the skin is dark. On the abdomen are three pairs of nipples; the anterior pair are smaller in size than the other two pairs. The body measures in length from the tip of the snout to the tip of the tail 58 cm. From the anterior angle of the eye to the tip of snout measures 7*3 cm. The length of the ear, which is ovoid in form, is 4 cm.; the breadth is 5*4 cm. The length of tail is 3*2 cm. The length of the manus, from the carpus to the tip of the central digit, is 6*5 cm., and from the carpus to the inner short toe 4*3 cm. The length of the pes is 4 cm., and from the tarsus to the inner toe 2*2 cm. The inner small second digit is slightly shorter than the outer fifth digit, both in manus and pes. This condition obtains in both the manus and pes of Sus scrofa, as I have had occasion to verify by examination of specimens in the College-of-Surgeons Museum. No trace of ducts opening on the skin at the inner side of the manus could be discovered. The permanent incisors and canines, the first and second premolars, and the first and second molars have been acquired. The third and fourth milk-molars are in place and are much worn. The ultimate lower molars have appeared, but are not full-grown : those of the upper jaw have not penetrated the gums ; but on cutting into the gums their presence could be detected. The adult dentition is I. | C. \, P. \, M . \, exactly the same, then, as that of the Common Pig. Being a female, the canines are small; but in the male now living in the Society's Gardens they seem to be well developed, and project slightly beyond the upper lip. The" tongue measures 9*5 cm. long by 2*4 cm. in breadth across the anterior part and 2 cm. across the posterior portion, is flat, and has the intermolar eminence less marked than in most Ungulates. The PROC. ZOOL. Soc-1883, No. XXVIII. 28 |