KUNGL. SV. VET. AKADEMIBNS HANDLINOAR. BAND 49. N:0 7. 25 



others and corresponds to the »oval protuberance* in Sus (Owen) and the »oval pad* 

 in Porcula (Gaeson), but it is about three times as long as broad. Together with the 

 strong sphincter pylori it has, of course, the function of occluding the pylorus from 

 the small intestine which in its beginning portion is very wide. 



The spleen is not so narrow as in Sus. Is is about three times as long as 

 broad. The left or lateral end is narrowed to a blunt point; the mesial, or right, 

 end which generally is a little broader, is somewhat curved forward, and it tapers 

 less. The parietal surface of the spleen is flat, but the visceral surface is broadly 

 keeled so that the organ has a triangular section. This keel fits in between the 

 ventricle and the coils of the colon; and the pointed left end of the spleen fits in 

 between the ventricle and the anterior end of the left kidney. 



The hver is divided in four main lobes ; the two central lobes are subequal, or 

 the right perhaps a little larger. The left lateral lobe is broader, but thinner than 

 the right lateral. The caudate lobe caps the right kidney which makes such an im- 

 pression upon it that it might nearly be termed forked, and the ventral prong of 

 this fork is quite thin and pointed. This lobe is thus more complex thaii in Sus. 



The gall-bladder is well developed, and its fundus end nearly reaches the margin. 



Vena cava passes through the substance of the liver (unlike the cdndition found 

 in Porcula according to Garson). 



The small intestine runs from the pyloric tract backwards on the right side and 

 is partly attached to the ventral surface of the right kidney which it passes. The 

 posterior end of the loop is firmly attached to the rectum in the sacral region. It 

 returns then forward on the left side of the root of the mesentery on the median 

 side of the left kidney and reaches the pyloric tract again where it is connected as 

 well with the commencement of the duodenum as with the colon. The continuation 

 of the small intestine from this point is laid into numerous coils on the right side 

 of the abdominal cavity which are seemingly irregular, but, if they are more closely 

 examined, these coils are found to run chiefly transversely to the axis of the body 

 in the anterior portion and then more longitudinally. In consequence of the short- 

 ness of the mesentery the intestine is, however, forced to form many curves and 

 bend in different directions. The small intestine has everywhere a rather wide lumen. 



The caecum is situated just in front of the pelvis, with the blind end directed 

 towards the right side in the groin. The small intestine enters from the right on 

 the anterior surface of the caecum with which its terminal portion is connected with 

 a mesentery. The caecum is sacculated three or four times on its ventral surface 

 (PI. 2, Fig. 1). It is rather short but wide, somewhat tapering towards the blind 

 end so that the general shape is bluntly conical. A band of muscular fibres is seen 

 on the, when in situ, dorsal side, and others partly radiating on the anterior side 

 which is directed towards the colic spiral and the coils of the ileum. The small 

 intestine protrudes with a tubular mouthpiece deeply into the lumen of the caecum 

 (PI, 2, Fig. 2), and transverse folds extend from this tube in both directions across 

 about a third of the lumen of the caecum. On the colic side of these folds and the 

 protruding end of the ileum a large and wide pocket opens into the lumen of the 



E. Sv. Vet, Akad. Handl. Band 49. N:o 7. * 



