10 Upton, Maine. 1871 at the height of about thirty feet; on timber jam contained two, another place got three fresh eggs. 42. D. Pennsylvanica. Occurs quite plentifully all the way up the valley at is not still scare at Upton in the clearings, along the edge of the woods. 43. D. striata. Took a female, the first morning May 8th, probably had straggler from th-om-gra- tin, as we did not put out afterward, though Veril gives it as "very common at the Ums. lakes breeding." Found them quite abundant at Bethel May 30th in the apple orchards. 44. D. antecularia. Common everywhere especially along the wood path, and edges of clearings? Nest always low down in the branches when in the woods. One nest found June 8th and two others June 9th were all built about breast high in a small fir and contained each four fresh eggs. 45. D. litrina. Very common everywhere but especially in the thickets of tall firs. Song precisely like D. castanea, and habits very similar, but rather more active, keeping always near the tops of the highest trees, and occasionally dashing out after a passing insect. They also had a habit of sitting perfectly motionless on the topmost spindle of some enormous branch or for for ten or fifteen minutes at a time and singing at regular intervals; at such time they are extremely hard to see, and when Nest were almost certain to lodge on the sprin- ging branches. The female like the sp-rit fly, always kept high up in the tree, we took until that were about to lay and on.