1848.] Anatomy of Ailiirus, Porcula, and Stylocerus. 481 



from snout to vent 26 inches. Colour a clear amber brown. Pelage 

 ample, ordinary. No mane. A strongly marked mystaceal tuft. 

 Testes and penis as in Sus, but only 6 mammae, which are clearly deve- 

 loped in the male, and are much more remote from each other than in 

 Sus, the type of which has 12 teats. Liver 2 lobes, each sub-divided 

 into 2, and no lobulus ? 4 divisions in all. Gall-bladder half embedded 

 in the great cleft, If inch long by -J wide. Biliary duct 3 inches, dis- 

 charging the secretion into the nutritive canal close to the pyloric oriface 

 of the stomach, so that the bile seems rather to pass into the stomach 

 itself than into the intestine. Lungs 7 divisions in all, and more nearly 

 equal in size (as are the lobes of the liver) than in Sus, but otherwise 

 similar. Heart 2f inches by 2 of maximum width. Spleen very long and 

 narrow like aManis' tongue, 6| inches by finch. Position and general 

 character as in Sus, but the organ is very decidedly longer and narrower 

 in Porcula than in Sus. Pancreas too much decayed for examination. 

 Stomach 10^ inches along the greater arch, 3 inches along the lesser, in 

 shape like the segment of a circle or crescent, longer and narrower than 

 in Sus, and having a fundus in every respect of length and width much 

 less considerable than in Sus. The orifices are more remote than in 

 Sus ; and the fundus, which contracts teat wise and is curved like a ram's 

 horn towards the sesophageal canal, almost touches the cardiac orifice, 

 partly by reason of this incurvation and partly because of the nearly 

 terminal position of the upper orifice. Otherwise the stomach has the 

 usual characters of Sus ; but it is perhaps thicker in the coats. Great 

 intestine 9 feet long and If inch wide, singly and slightly banded and 

 sacced, whereas the same intestine in Sus is doubly and strongly band- 

 ed and sacced. Cceum 4f inches by 2 inches, conoid, not sacculated 

 at all. In Sus the coecum is banded and sacculated like the colon, and 

 is also much more capacious than the plain coecum of Porcula. Lesser 

 intestines 14^ feet long and f inch wide. 



To summarize the differences in the chylopoietic viscera of Sus and of 

 Porcula, we may note that in Porcula the stomach is narrower, has the 

 orifices more terminal, and altogether is of a much less retardatory cha- 

 racter in regard to the passage of the food ; that the great intestines 

 and coecum of Porcula uphold the same character of diminished retard- 

 ation, the coecum being less in size and void of sacculse, whilst the colon 

 is only singly and slightly sacculated, not doubly and strongly as in 



