THE GENUS MYIODIOCTES 323 



birds winter much if any over our Mexican border. The full 

 extent of their dispersion in Western Mexico remains to be 

 ascertained, our advices from that country, excepting Lower 

 California, being altogether insufficient. 1 saw nothing during 

 my acquaintance with the bird to indicate any peculiarity of 

 character or habits in comparison with its Eastern congener, 

 and the experience of others is to the same effect. 



Genus MYIODIOCTES Audubon 



Wilsonla, Bp. CGL. 1838, 23. (Preoccupied in botany ; used also in entomology.) 

 MylodiOCt'es, Aud. Syn. 1839, 48. (Type Motacilla mitrata Gm.)—Bd. BNA. 1858, 291.— Bd. 



Rev. AB. 1865, 2.38.— B. B. <& B. NAB. i. 1874, 313. 

 Hyloctonus, Cab. MH. i. 1850, 18. (Same type.) 



Chars. — Bill Muscicapine, though with the lateral outlines 

 a little concave, broad and depressed at the base, with many 

 obvious rictal bristles reaching decidedly beyond the nostrils; 

 culmen and commissure nearly straight. Wings pointed, as in 

 most Si/lvicolidw, longer than the tail, the 1st quill longer than 

 the 5th, the 3d equalling or exceeding the 4t.h. Tail narrow, 

 even or little rounded. Middle toe without claw about three- 

 fifths as long as the tarsus. Coloration indeterminate. Tail 

 unmarked, or with white blotches as in Dendrceca. No red or 

 flame-color ; always yellow below. 



This genus comprehends three or four species, well distin- 

 guished by the development of the rictal bristles and the 

 depressed shape of the bill, though the Muscicapine characters 

 are not pushed to the extreme seen in Selopliaga. The tail is 

 narrow, lacking the fan-shaped contour of that of Setojyhaga, 

 and the feet are stouter, with longer toes. In CardelUna, a near 

 ally, the bill is narrow and conoidal, somewhat Parine in appear- 

 ance, with curved culmen. In Basileiiterus, and in fact in all 

 the extralimital forms of the Flycatching Warblers, the wing 

 is rounded, with the 1st quill shorter than the 5th. 



All the recognized species of 3Iyiodi>ctcs are natives of the 

 United States; only one, however, is known to occur in the 

 Colorado Valley. The others are as follows : — 



Slyiodioctes canadensis.— Canadian Flycatching: Warbler. 



MuSClcapa canadensis, L. SN. i. 1766, 327, n. 13 (Briss. ii. 400, pi. 39, f. 4).— Gm. SX. i. 1788, 

 937, n. U.—Turt. SN. i. 1806, 515.— Lath. 10. ii. 1790, 484, n. 65.— Wils. AO. iii. 1811, 100, 

 pl.26, f.2.— S<<pft. Gen. Zool. x. 1817, 350.— F. Ency. M6th. ii. 1823, 810.— Bp. Joum. 

 Phila, Acad. iv. 1824, 1~8.— Aud. OB. ii. 1834, 17, pi. 103.— Breic. Jonrn. Boat. Soc. i. 

 1837, 436.— Pca6. Eep. Orn. Mass. 1839, ^Ol.-Thomps. Vermont, 1853, 77. 



Setophaga canadensis, " Sw."—Jard. "ed. Wils. 1832 ".— fitcft. Rep. Brit. Assoc, for 1836, 

 1837, -.—(Jra?/, "G. of B."— Cabot, Naum. ii. Hcftii'. 1852, CO.— IToy, Pr. Phila. Acad, 

 vi. 1853. 309. 



