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Show 1900.] MR. F. E. BEDDARD ON BASSARICYON ALLENI. 665 tongue ; there is a group of them high up in the A formed by the circumvallate papillae, and at this region there are no filiform papillae, which commence somewhat lower though still between the limbs of the A. The fungiform papillae extend to the very apex of the tongue. Mesenteries.-Concerning the mesenteries, I have the followiug observations to offer, but I am unable at present to compare their arrangement with that obtaining in other Arctoids. The free edge of the omentum was absolutely free, it having acquired no secondary connections with the rectum or other viscera. The bottom of tbe duodenal loop is attached for about half an inch on the ascending limb by a special mesentery to the common dorsal mesentery of the alimentary canal in the region of the commencement of the large intestine. This is as nearly as possible exactly opposite to the insertion of the mesentery which passes from tbe gastro-splenic omentum and supports one limb of the pancreas. Stomach.-The stomach is in no way remarkable in form. It is perhaps rather elongated. The oesophageal and pyloric orifices are about an inch apart, and the greater curvature is some 4| inches. The extreme length of the stomach is 2= inches. The pyloric portion, as in AUlurus1, Cercoleptes, and other forms, is tubular .and very thick-walled ; it is hard to the touch, and can be thus easily distinguished from the rest of the stomach and from the duodenum. The length of this portion of the stomach is nearly an inch. Its orifice into the rest of the stomach is marked by numerous longitudinal converging folds, and it is traversed by similar folds. Externally it can be seen to commence abruptly. It is to be distinguished from the duodenum by a constriction. The spleen is straight, wider at one end, and measures about 2 inches. The intestines measure about 62 inches. Although there is of course no caecum, the increase in calibre marks the commencement of the large intestine. Beckoned in this way, the small intestine occupies 55 inches of the length of tbe entire tract, while the remaining 7 may be called large intestine a. The liver is displayed in tbe accompanying drawing (fig. 3, p. 666) from the abdominal surface. The features chiefly worthy of note are in the first place the very large size of the caudate, which consists of two very distinct lobes. The Spigelian lobe is also fairly developed. The gall-bladder is deeply imbedded in the liver, but is not visible upon the diaphragmatic aspect. The right lateral lobe is larger than the left lateral, but the left central lobe is larger than the right central. From the left lateral lobe is detached a small separate lobe. i Flower, "On the Anatomy of Murue fulgens," P.Z. S. 1870, p. 752. i Or perhaps this should be considered as rectum only. |
