Nests of Pipilo erythrophthalmus and By. eritata Hill. Peregrina May 29 — 1875 Middlesex Co., Mass. 131 May 29 Cool with E. wind, the sun shining, all day being threaded in a sort of sea fog such as frequently prevails on the coast but is rarely observed so far inland. Took the train for Concord last night with Henry Wardin & B. Dean and put up at the hotel when we were visited by Jim M. and W. Brittrick, got off at it this morning and taking Jim's boat pulled up the Assabet river. A little above Egg rock he heard a Hill. Peregrina singing with that persistent energy peculiar to the species and landed. I shot him with the Stevens pistol, wanting about him for several hours I found a nest of Pipilo erythrop. with 4 fresh eggs, and shot a pair of My. canadensis, and a Lon. albicollis; of the latter species I have not seen a specimen for over three weeks, stepping on up river we found several nest of Tyrannus Carolinensis placed on horizontal branches low over the water, and I shot a 'S' My. fasciillus that was singing in a small firm, its song is rather feeble and devoid of character and expression and resembles somewhat that of Bend. County, with a little descending flourish at the termination lower which renders them sufficiently distinct. Went up river as high as the 'One arch' bridge and got back to town in time to take supper at the hotel and catch the 6,38 train home. Saw quite a number of My. Can.