Ceophloecus pileatus. Lake Umbagog, Maine. 1897. sure. It is sufficiently large to admit Watrous's arm which, May 28. thrust down to the elbow, did not reach the bottom. (No. 2). When we first reached the stub we pounded it hard with- out starting anything. A minute or two later while we were still sitting in the boats at the base of the tree the ♂ Log- cock came flying directly towards it and alighted on a small fir stub about 6 ft. from it and perhaps 10 ft. above the wa- ter. After looking down at us with an expression of calm in- quiry for a moment he swung across to the nest and alighting just below the entrance hole with his legs wide-spread and his tail firmly braced against the trunk clung there motionless for an instant looking in. Next he made as if to enter thrust- ing in his head but instantly withdrawing it with a jerk and turning it on one side to look down at us suspiciously. He kept this up for fully a minute making a dozen or more false starts but each time going further and further in until final- ly he quite disappeared but a few seconds later he thrust out his head having evidently turned within the nest almost as soon as he reached it. After looking down at us a moment with evident uneasiness he came out and flew first to the small fir and soon afterwards to a tall stub 100 yards away where he cackled several times. Then he started for the distant green woods crossing the intervening region of flooded stubs on a