76 MACGILLIVRAY'S WARBLER. 



tsh tsh tsh teet [shee. Another male, on the skirts of a thicket, called 

 out at short intervals visk mshtyu, changing to mt mt mt mtyu and vit 

 vit mtyu, sometimes, when approached, dropping his voice and abbre- 

 viating his song. Another had a call of visht visht, msht e msht fshew 

 and msht msht mshteshew or vititshee. On the 12th of June, a nest of 

 this species was brought to me, containing two young birds nearly 

 quite fledged, in the garb of the mother, pale yellow beneath, and 

 brightish yellow-olive above. The nest was chiefly made of stripes of 

 the inner scaly bark of probably the White Cedar, Thuya occidentalism 

 lined with slender wiry stalks of dry weeds, and concealed near the 

 ground in the dead mossy limbs of a fallen oak, and further partly 

 hidden by a long tuft of Usnea. It was less artificial than the nest of 

 the Yellow-throat, but of the same general appearance, and concealed 

 in a similar situation, probably in a thicket near the ground. On re- 

 turnino" the nest to the place it had been taken from, I had almost im- 

 mediately the satisfaction of seeing the anxious parents come to feed 

 their charge, and for some days they shewed great anxiety on being 

 approached." 



" This," says my friend Mr Harris, " is the warbler that so closely 

 resembles the S. Philadelphia. Mr Townsknd has brought in more 

 specimens, which agree with the others in the very distinctive mark of 

 the white eyelids, with dark spots from the base of the bill to the eyes, 

 and also dark on the front at the root of the upper mandible. I can- 

 not but think it entirely distinct." 



Sylvia MACGiLLivaAYi. 



Adult Male in Summer. Plate CCCXCIX. Fig. 4. 



Bill short, straight, conico-subulate, compressed toward the end, 

 acute ; upper mandible with the dorsal line declinate, straight, a little 

 convex at the end, the ridge narrow, the sides convex, the edges direct 

 and overlapping, with a slight notch, the tip narrow ; lower mandible 

 with the angle of moderate length and narrow, the dorsal line ascend- 

 ing and slightly convex, the sides rounded, the edges inflected, the tip 

 acute ; the gape-line straight. Nostrils basal, lateral, oblong, opercu- 

 late, exposed. 



Head of moderate size, ovato-oblong ; neck short ; body rather 

 slender. Feet rather long ; tarsus slender, longer than the middle toe, 



