Ring tailed Bassaris (_Bassariscus astutus_). Adult died after two weeks’ stay in the Garden with a history of general failure of condition. The diagnosis at autopsy was primary anemia, fatty degeneration of the liver, hemorrhages in intestines and spleen, hyperplastic bone marrow. The external appearance is of general good condition, fair skin, mucous membranes pale. Lungs collapsed, and gray-red. There are several small hemorrhages scattered irregularly throughout respiratory tissue. Lymph Nodes—small, soft mottled gray- red. Pericardium had slight excess clear fluid, and no adhesions. Heart normal in size, and of pale brown color. The liver of normal size, smooth surface and sharp edges, of a pale brown color, soft and friable. Has indistinct markings like yellow brown mottlings on section surface. gall-bladder contains some viscid brown bile. Spleen, normal or slightly less in size, consistency firm, capsule pale pearl gray, apparently not thickened. There are numerous small hemorrhagic spots on section surface. Interlying pulp is homogeneous deep red. Follicles not visible. Kidney, normal in size and shape. Trabeculæ faint. Capsule smooth, strips easily, smooth surface, and brown. Consistency soft. Medulla prominently striated, cortex homogeneous salmon pink. Stomach contains a little glistening mucus. Mucosa pale, flat yellowish, slightly opaque. There is a recent clot lying in some mucus just above pyloric valve. There is, however, no open vessel nearby. From pylorus to anus lumen contains some rather fresh smeared out or slightly clotted blood and mixed in with mucus. Mucosa is flat translucent, submucosa slightly injected in a mosaic fashion, otherwise gut wall is negative. No recognizable food present. Follicles not visible. Mesentery glands small, soft, pale yellow. Bones seem entirely normal. Marrow of long bones is firm, bloody. Marrow of ribs also deep red. Blood in intestinal tract is probably a recent slow oozing from intestinal walls, and was probably the last straw. Cause of this anemia could not be determined. Blood preparation not made because it was too long after death. Liver shows moderate fatty infiltration of marginal areas. Pigment is scarce, only a few granules being present in the Kupffer cells, not more than is often seen without marked anemia. There is a slight increase in interstitial nuclei but not in fibres. No obstruction or increase of bile ducts.