Bot. Henderson? Nests of S. auracea 149 Hos. infus, Yurdus fus. Piers subsens. Middlesex Co., Mass. 1875. June 11 made an aperture on a bank with the egg and poked her quite forcibly with my finger. Nest saw a pair of Hirundo sublata on the shore of Sandy Ford and watched the S into the nest. I was but partially completed and was in a very exposed situation being hung from the topmost twig of a White Olive sapling not over 5 ft high. Continuing on I saw numbers of Pyranza ruba and first 3 males but found only one nest S that empty. Saw also three S Hel. chrysifus. One of them sang invariably either see de de de de or see de de de de de — near less than 4 final syllables. Heard a S My Canadensis singing vigorously in the swamp when they annually bred but could not find the nest. Took then nests of S. auracea. two with 4 the third with 5 eggs all pretty well advanced. Also found a nest of Yfor. infus built in the ground under the roots of a sound oak both 2 eggs and a nest of Y? fuscens very prettily placed in an old fallen oak top among the dead leaves and on the top of a hill. Left in P.M. I struck into John Moore's meadow and soon heard the shrill of my old friend Bot. Henderson. Found two males and both evidently had nests as they chirped at me continuously as long as I remained near the place; did not shoot at