NORTHWESTERN MEXICO. 267 



5. Harporliynclius curmrostris (Sw.). 

 Tepic, Grayson ; Mazatlan, Xantiis, Bischoff. 



"A common resident in this locality and the high central plains to the city of Mexico." 



6. Ilarporhynchus graysoni Baird. 



" Proc. Bost. Soc. of N. H., xiv., p. 298. 



Island of Socorro, Grayson. 



" Like all birds of the genus, this is a charming songster ; I found it to be quite tame, seeming to be fond 

 of our company, and while in the lonely solitudes of its home we were cheered both by night and by day 

 with its sweet melody." 



7. Mimus polyglottus (Linn.). 



" " Proc. Bost. Soc. of N. H., xiv., p. 277. 



Mazatlan, Grayson, Bischoff; Tres Marias, Grayson. 



" Not common in the Tres Marias, but resident there. It is identical with specimens from the main-land, 

 whence it doubtless found its way to the islands." 



Fam. Saxicolid^. 



8. Sialia mexicana Sw. 



" " Finsch, Abh. nat. Ver. zu Bremen, 1870, p. 329. 



Mazatlan, Grayson ; Plains of Colima, Xantus. 



Fam. Stlviid^. 



9. Polioptila ccerulea (Linn.). 

 Mazatlan, Bischoff ; Tonila, Xantus. 



10. Polio2)tiIa nigriceps Baird. 

 Mazatlan, Tepic, Grayson. 



"Found in the low brushy woods .at all seasons." 



Fam. Teoglodytid^. 



11. Rhodinocichla rosea (Less.). 



« « Finsch, Abh. nat. Ver. zu Bremen, 1870, p. 329. 



Mazatlan, Grayson ; Sierra Madre, Xantus. 



" I have not been .able to discover this bird in any other locality than the thickly wooded district bordering 

 the Eio Mazatlan ; here it seems to remain throughout the year, concealing itself in the densest brush, where 

 its voluptuous and melodious notes are often heard when the bird would be invisible." 



The proper family affinity of this remarkable species is not yet definitely settled. Dr. 

 Finsch, 1. c, has it under DendrocolaptidjB, and Mr. Gray in his " Hand List of Birds " places 

 it among the Turdidte. Col. Grayson states that its habits are very similar to those of the 

 Thrushes. Possibly it should occupy an independent position between the Thrushes and 

 Wrens ; its great vocal powers would seem to exclude it from Dendrocolaptidte. 



12. Campylorliynchus humilis Scl. 

 Mazatlan, Bell ; Cohma, Xantus. 



