7 UPTON, MAINE 1871 28. Sialia sialis. Occurs sparingly in the clearing where it breeds in the Martin boxes and hollow "stubs". 29. Regulus satrapa. Affects the cedar swamps and fir thickets where it is quite common, and breed. Took a female June 6th that had evidently been incubating some time but was unable to discover the nest. The males had a simple warbling song slightly resembling that of D.Blackburniae. 30. Parula Americana. Frequent: affects the tops of the beech and birch trees. 31. Geothlypis trichas. Found sparingly in the clearings. 32. Geothlypis Philadelphia. Rather common, its favorite resorts are the edges of the woods and small clearings grown up to bushes. On the stage road down we heard no less than seven males singing in the course of a ride of as many miles. The males, unlike G.trichas, which it otherwise greatly resembles in habits, always sings from the projecting branch of some dead "stub" at the height of about twenty or thirty feet: out of a dozen or more observed, there were no exceptions to this rule: the song is extremely beautiful; resembling somewhat that of S.noveboracensis, which however it much surpasses, it commences with two high notes and ends in a most exquisite warble with a falling inflection to the end, altogether excell- ing that of any bird in the region it inhabits. Its ordinary chirp is precisely like that of G.trichas but it has also a shrill petulant chirping note never heard from that bird. 33. Helminthophaga ruficapill. Quite rare: it is here almost