MAMMALS. Glacier Bay, Alaska. June 27 to July 20 1907. Frank Stephens. Sciurus hudsonius. Hudson Bay Chickaree. Common. Notes are a grasshopper's like chirr, similar to these of the chickaree living in the Sierra Nevada of California. I saw but few nests in the spruces, but the piles of scales from the spruce cones were plentiful. These were usually around the base of one of the larger trees and may have been produced by the destruction of the cones from that tree only. These piles of scales had many holes in them which were probably entrances to the burrow, and trails led away from them through the moss. Meat was an attractive bait. I caught one half grown individual and kept it alive a week when its hurts proved fatal. It preferred milk to anything else we could offer it. Marmota caligata. Hoary Marmot. Saw a very few tracks at our camps on the east side of the day. Probably the Indian dogs have killed most of them. Dixon found them common at Coppermine Cove, from sea level up. They vary greatly in color. No Peromyscus were found. Evetomys dawsoni. Dawson Red-backed Mouse. Found only at the camp near Bartlett Cove, and mostly close to camp there. They were trapped only in the edge of the alders, usually in traps set within the brush. Some Micro- tus were caught in the same traps and also shrews. Microtus sp.? Meadow-mice were abundant in the grass along the beaches, on the islands as well as on the mainland. Erethizon epixanthus myops. Alaska Porcupine. None taken. Seen by Hasselborg. I saw tracks on the sand-hill near Bartlett Cove. Ursus Dalli. Dall Brown Bear. Littlejohn killed a female and an Indian kill- ed her cub across the creek near Bartlett Cove. Bears do not appear to be common here. Hasselborg found some sign further inland.