206 THE GENUS PAEULA 



that of the true Creepers. The remaining genera are " Wood 

 Warblers", chiefly represented hj I)endrceca,from which Perisso- 

 glossa and Peucedramus have been successively detached, on the 

 ground of certain peculiarities of the tongue and bill, and some 

 other features. In their special habits, song, food, and mode 

 of nesting, the Sylvicolinw differ among themselves to such a 

 degree that it is scarcely possible here to go into further details. 

 I must refer to the several histories of the species, upon which 

 we are now prepared to enter. The descriptions and biographies 

 will be confined to the species inhabiting the Colorado Basin ; 

 but I shall take note of all the North American species, giving 

 synonymy and habitat. 



Oenns FAEULA Bonaparte 



CblorlS, Boie, Isis, 1826, 927. (Not of M'ohr. Gen. At. 1753, 51. Type Paras americanui L.) 

 SflTlCOla, Sw. Zool. Joam. iii. 1827, 169. (Not olBumph. Mas. Calon. 1797, CO. Type Sylvia 



puHlla "WiU.) 

 Farula, Bp. C. & G. L. 1838, 20. (Type Farms americanwi L.) 

 Compsotblf pis, Oab. Mns. Hein. i. 1850, 20 (same type). 

 Ficednla, Des Murs, " — , 1853, — " (fide Gray ; neo anot). 



This generic name, based upon Parus americanus of Linnaeus, 

 and latterly restricted to include only species having the same 

 pattern of coloration as the bird just named, is now employed to 

 designate a group of Warblers considered by Baird to be most 

 nearly related to Mniotilta, all of which have the upper parts 

 bluish, with a yellowish patch on the back, and the under parts 

 more or less yellow. The tail-feathers have white spots, as in 

 Dendreeca. The bill is very short, quite stout, acutely conical, 

 and notched near the tip. The rictus is evidently furnished 

 with bristles, though these are few and short. The hind toe is 

 decidedly longer than its claw, and the anterior toes are rather 

 more than usually connate at the base. The tarsus is longer 

 than the middle toe and claw. The lateral claws are of un- 

 equal lengths. But the structural peculiarities are very slight, 

 and the species are easiest recognized by the pattern of colora- 

 tion and the very small size — five inches in length, or less. 



If the group is considered worth retaining, its proper name 

 is uncertain. Chloris was used by Mohring in 1752 for a dif- 

 ferent group; but if his genera are to be rejected as pre-Liunsean, 

 the employ of Chloris by Boie in 1826 may require to be endorsed. 

 Sylvieola of Swainson, 1827, whether applying exclusively here 

 or not, is clearly antedated in zoology by Sylvieola of Humph- 

 reys, 1797. Parula of Bonaparte, 1838, if acceptable without 

 diagnosis, is antedated by Parulus of Spix, "Av. Bras. i. 1824, 



