NORTHWESTERN MEXICO. 287 



116. Myiodynastes luteiventris Bp. 



Mazatlan, Grayson, Xantus ; Mts. of Colima, Xantus. 



" Not a common species ; inhabits the tall trees of the -woods. I have only met with it in the months of 

 May and June, at which time they were nesting. I have also found it near Tepic, in the State of Jalisco, in 

 the month of May. As I have not met with a single bird of this species during the winter months, I am led 

 to the conclusion that they migrate southward after the breeding season is over," 



117. Pyrocephalus ruhineus var. mexicanus Scl. 



" mexicanus Finsch, Abh. nat. Ver. zu Bremen, 1870, p. 330. 



Mazatlan, Grayson ; Plains of Colima, Xantus. 



"Abounds in Western Mexico, throughout a greater portion of which it is a constant resident. I found it 

 along the entire route from Tepic to the City of Mexico. Its favorite resort is along the borders of small 

 streams or stagnant pools, where it perches upon some low dry branch, from whence it darts upon the skim- 

 ming water flies and Hymenopterous insects that resort to such localities. It seldom perches upon a high 

 tree, and is never met with in the thick forests. They are very abundant in the vicinity of Tepic, where I 

 found several of their nests in May and June. The nests were always over the water of a lagoon, or the 

 river of Tepic, generally in the fork of a small thorny bush without leaves, and densely covered with gray 

 lichens or moss ; so nearly does it resemble the lichens among which it is placed^ as to render its detection 

 difficult, were it not for the birds themselves, who exhibit great uneasiness when their nest is approached. 

 The eggs are five in number, very delicate, of a cream color, with purplish-brown spots." 



118. Mitrephofus phoeocercus Scl. 

 Mazatlan, Grayson, Bischoflf. 



119. Empidonax flmwentris var. difficilis Baird. 



" difficilis Proc. Bost. Soc. of N. H., xiv., p. 279. 



Mazatlan, Tres Marias, Grayson ; Plains of Colima, Xantus. 



" Found in the vicinity of Mazatlan, quite common ; also at Tepic and the Tres Marias Islands. All the 

 specimens procured by me were in the winter and spring months. I am not certain that it remains through- 

 out the summer." 



120. Empidonax traillii var. pusillus (Sw. and Rich.). 

 Mazatlan, Grayson. 



121. Contopus virens var. richardsoni (Sw.). 

 Mazatlan, Grayson. 



122. Contopus pertinax Cab. et Hein. 



Tepic, Mazatlan River, Grayson ; Plains of Colima, Xantus. 



«' This flycatcher is found here at all seasons, and at Tepic." 



123. Myiarchus mexicanus (Kaup.), {cooperi Baird). 



" " Proc. Bost. Soc. of N. H., xiv., p. 278. 



Mazatlan, Tres Marias, Grayson. 



« This large fljcatcher I found in the vicinity of Guadalajara, Tepic, and quite common in the tierra cali- 

 ente; also a few specimens procured in the Tres Marias Islands. 



" I discovered the nest in a hollow stump about five feet from the ground ; the hole was vertical, and at 



