1883.] ON THE ANATOMY OF SUS SALVANIUS. 413 



4. Notes on the Anatomy of Sus salvcmiiis {Porcula salvania, 

 Hodgson). — Part 1. External Characters and Visceral 

 Anatomy. By J. G. Garson, M.D., F.Z.S. 



[Eeceived June 5, 1883.] 



One of the Pygmy Hogs recently acquired by the Society having 

 died, it was put into my 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, and other parts of the body, and the osteology, for a sub- 

 sequent 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 pairare 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 ; 

 hut on cutting into the gums their presence could be detected. 



The adult dentition is I. g, C. j, P. j, M. 3, 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 



