1871.] 279 ' [Grayson. 



generally known as M. cooperi Baird, of which it has precedence, 

 thus sustaining the specific value of my M. cinerascens, which has by 

 many been referred to M. mexicanus. 



29. Myiarchus lawrencii (Giraud). "Lawrence's fly 

 catcher ; Alguacil de moscas." 



"This little fly catcher is very abundant in the Marias, where I met 

 with them every day, in all parts of the woods. These Islands must 

 be their most natural and favorite abode. I do not remember to 

 have met with it on the main land.' Length, 7 in. ; alar ext. 9.75 ; 

 bill and feet, black ; iris, brown." 



30. Empidonax difficilis Baird. " The lonely fly catcher ; 

 Tristecillo." 



"Is common in the Marias, as well as on the main coast ; and also 

 in California. The accustomed places of resort of this solitary little 

 bird are the most retired and secluded dells of the forest, where, be- 

 neath the canopy of the natural and shady grottos, formed by the 

 overlapping branches intermingled with innumerable lianes, convolvu- 

 lus and other creeping plants, it sits upon some low twig, watching 

 for a passing fly ; or it may be seen frequenting some secluded and 

 shady little brook, near the surface of which it often darts upon the 

 skimming water flies, ever and anon uttering its low and plaintive 

 one syllabled note. 



"General colors brown olivaceous above, with the entire under 

 parts bright yellow, intense on the throat and chin ; a conspicuous, 

 pale yellow ring around the eye ; also two bands across the wings of 

 a light yellowish tinge. Bill dark brown above, yellow beneath, 

 rather broad and depressed ; feet dark brown. Total length, 5.20 ; 

 tail, 2.25." 



31. Elainea placens Scl. "Little golden crowned fly catcher ; 

 Coronillo." 



"This species is rather rare on the Tres Marias." 



COTINGIDiE. 



32. Hadrostomus aglaise var. affinis (Elliot). " Rose- 

 throated fly catcher ; Rosieler." 



"In the Tres Marias, this bird is only found in the thick woods, 

 where it is seen searching for insects, sometimes darting after them 

 when on the wing, at other times looking for them among the leaves 

 and branches not unlike the warblers. Its notes are feeble and but 

 seldom uttered, and its habits solitary. 



