Colaptes holboellii L. Umbagog, Maine. Podiceps grisegena holbolsi, Nov. 1 1884. holtoli - Oct. 17 saw that 1886. Oct. 19 (2 shot was ad.) - 24 (4) that 1889 94 Pod. holbolsi Oct. 13 Lake Umbagog, Maine. 1890. Lake Umbagog, Me. Sept. & Oct. 1893. Podiceps holboelli Oct. 8 2 heard calling at night (two notes) 9 clear calling at 8 and 11 a.m. Lake Umbagog, Me. Sept. & Oct. 1893. Podiceps holboelli Oct. 8. 9 On the night of the 8th two of these Grebes called at intervals for more than an hour - from 8 to 9 P.M. During most of this time they appeared to be in the water off the Butler but once came from a bird which was evidently flying past our camp. They made two sounds a peaking they made two sounds a pealing pulsating whistle hollow in tone & much like the moan of a Golden eye mews (yet vocal, or thought) and a harsh stident ear - as r.r. The latter cry was usually repeated two or thrice times in quick succession. It was invariably preceded by and sometimes alternated with the whistle. Both sounds were very loud & penetrating. - easily heard at a distance of a mile On the morning of the 9th one of these Grebes was floating off St. Point making these sounds. Unfortunately I did not see him while in the act. The whistle, may possibly be produced by the wings.