116 MASS. (Middlesex Co.) 1875 May 10. D. aestiva, Vireo gilvus et flarifrors, Dc. Batthnus, G. trichas S. aureocapillus, Turdus fuscescens Percrorens Canadensis, May 10 in the O.M. Seval Octers Balthmus can been to day. I noted Syranmus Bar, and Dnd. aestiva both in numbers May 11 Clear and warm. Spent all the day in the house and mounted 4 birds. Henry (Glenshaw) arrived from Washington last night and dropped in on me this afternoon. Purdie also came out and we went up to the swamps together at dusket to hear the rails, with which the swamps were fairly alive. Purdie compared the backling of P. Carolina to the stock of a woolman's (atth turned short, Arrivals now Dicro gilvus et flarifrors and G. trichas all in numbers. Fictus Balthnus was also quite numerous about the city this morning. May 12 Clear & warm. Saw a g. D. aestiva winding the very first piece of stone into a fork of a Vibec bush. She apparently selected the site for the nest without a moments hesitation. Serinus aureocapillus noted at Norton on the 8th, v. Turdus fuscescens on the 9th inst. Gariophila ludoviciana & Dol. origivorus on the 10th, Antrostomus vociferus, D. Pennsylvanian and D. Blackburnias on the 11th; Perula (and?) Hel. inficajilla on the 12th. Mr. B. J. Nagman saw distinctly Percrorens Canadensis in a garden in West Norton on May 10. Mr. Percy Aldrich was with M. at the time and the identification beyond suspicion of error.