. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. MARSUPIALIA. 305 Fig. Liver of the Koala. the convex surface of the liver. The coats of the ductus choledochus are thickened towards its termination, and become the seat of nu- merous mucous cysts which open into the in- terior of the duct. In thp Phalangers the terminal half-inch of the ductus choledochus is similarly enlarged and glandular. The biliary and pancreatic ducts generally unite together before perforating the duodenum. In the Virginian Opossum, the long-nosed Bandicoot, and the long-tailed Dasyure they
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. MARSUPIALIA. 305 Fig. Liver of the Koala. the convex surface of the liver. The coats of the ductus choledochus are thickened towards its termination, and become the seat of nu- merous mucous cysts which open into the in- terior of the duct. In thp Phalangers the terminal half-inch of the ductus choledochus is similarly enlarged and glandular. The biliary and pancreatic ducts generally unite together before perforating the duodenum. In the Virginian Opossum, the long-nosed Bandicoot, and the long-tailed Dasyure they pour their secretions into the gut an inch from the pylorus. In the great Kan- garoo the glandular ductus choledochus is joined by the pancreatic duct, and terminates in the duodenum five inches from the pylorus. The pancreas.—The pancreas extends as usual from the duodenum to the spleen, be- hind the stomach; it is characterized by a pro- cess sent off at right angles, or nearly so, to the main lobe at or near its left extremity. I have observed other small and thin processes branching out into the duodenal mesentery in a Phalanger; and similar but still more nu- merous processes, so as to give the organ a dendritic appearance in the Kangaroo; but the first-named process is constant. The spleen.—It is interesting to observe that the spleen corresponds in this triangular or T- VO{.. III. shaped figure with the pancreas. In the great Kangaroo (Macropus major') I found the main body of the spleen ten inches long, and the rectangular process six inches ; both parts were narrow and thin. Absorbents.—The lacteal absorbents form, in the Dasyurus viverrinus, two thin, subelongate, dark-coloured mesenteric glands: one of these is situated near the pylorus, at the end of the pancreas. The plexiform cysterna chyli is si- tuated in the Kangaroo ( Macropus Parryi was the species from which the following descrip- tion is taken) upon the crura of the diaphragm, and extends upon the r
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