1871.] 277 [Grayson. 



parts uniform reddish brown, with a faint olivaceous tinge; fore 

 part of the breast tinged with a brownish yellow, becoming paler to 

 the chin; the remaining parts are white; sides of the throat and 

 fore part of breast, with small, distinct, triangular spots of well de- 

 fined brown ; sides of the breast more obsoletely spotted, and sides 

 of body washed with olivaceous yelloW-brown. Under wing coverts 

 yellowish brown, the basal portion of the entire inner web of the 

 secondaries pale yellow or buff. When the wings are outstretched, 

 and particularly when the bird is in flight, this shows a broad and 

 rather faint (although distinct) whitish band across the wing. Bill, 

 brownish, under mandible yellow at base. Length, 7.50 ; wing, 

 3.75; tail, 3; tarsus, 1.12." 



23. Mimus polyglottus Linn. "Mocking Bird; Censontli." 

 " I saw a few individuals of this interesting and well known song- 

 ster, which were very shy and seemed to be lost or out of their 

 range ; perhaps wandered from the main land. This is not improb- 

 able, as during a voyage from Guaymas to Mazatlan, and midway 

 in the Gulf, a fine male bird of this species came on board of our 

 craft, so much fatigued as to be easily captured." 



AMPELID^E. 



24. Myiadestes obscurus Lafr. " Iilguero." x 



" In the Marias this bird is more frequently to be met with, and not 

 so wary as on the main land ; confining itself to the hilly portions of 

 the Islands, where at all seasons its strange medley of song may be 

 heard in the evening and morning. 



" They are great favorites with the Mexicans, and we often see 

 them in cages, in different parts of the country. They make good 

 cage birds, and sing well, their notes, however, are ve'ry singular, 

 reminding one of a discordant music-box. 



" The general colors of this Iilguero is reddish brown on the 

 upper parts ; breast and sides pale lead color, chin and throat white, 

 with a narrow black streak on each side of the throat, extending 

 backward from the base of the lower mandible, about half an inch ; 

 a white ring around the eye ; abdominal region and under tail cov- 

 erts, white ; bill, black, short, and rather depressed ; feet, black ; 

 eyes black. Total length of male, measured fresh, 7.90 in. ; alar ext., 

 12.50 in.; tail, 4.10 in. ; tarsus, 1 in.; 3d and 4th primary quills 

 longest." 



1 Pronounced Hilgaro. 



