Inches. 

 Length from the tip of the bill to the end of 



the tail 4 



„ of the tail .... 1 



,, of the folded wing . . .2 



„ of the bill from the angle of the 

 mouth ..... 



SYLVIAD.E. 





Dimensions 

 Of the male. 





Lines. 



Length of the bill on its ridge 

 9 „ of the tarsus 

 9 „ of the middle toe 

 6 „ of the middle claw 



,, of the hind toe 

 6 „ of the hind claw 



213 



Inches. 



Lines 



. 









9 







^i 1 



a 2 







2 







3* 







8* 



[47.] 2. Sylvicola maculosa. (Swainson.) Yellow-rump Warbler. 



Sub-family, Parianse. Genus, Sylvicola. Swainson. 



Yellow-rumped Fly-catcher (Muscicapa uropygio luteo). Edwards, pi. 255. 



Ficedula Pennsylvanica, naevia. Brisson. Orn., iii., p. 502. 



Yellow-rump Warbler. Penn. Arct. Zool., ii., p. 400, No. 288. 



Sylvia maculosa. Lath. Ind., ii., p. 536, sp. 108. Bonap. Syn., p. 78, No. 106.* 



Sylvia magnolia. Wilson, iii., pi. 23, f. 2. 



Plate xl. 



Although rare in the United States, this is a common bird on the banks of the 

 Saskatchewan: it is as familiar as the S. (estiva, which it resembles closely 

 in manners, but is gifted with more varied and agreeable notes. It was often 

 seen by us in the thickets of young spruce-trees and willows, flitting near the 

 ground from one branch to another. It feeds on winged insects. The spe- 

 cimens seen by Wilson were constantly among the higher branches, and were 

 very active and restless. It is one of the most beautiful of all the American 

 Warblers. 



* On consulting the above synonymes, it evidently appears that Brisson, Pennant, and Latham have copied their 

 account of this species from that first given by our countryman Edwards. Besides the internal evidence which these 

 descriptions aiford of such being the case, the fact is corroborated by a singular circumstance : all these writers describe 

 the back as of an olive-colour. Such was the specimen described by Edwards, and which was doubtless a female or 

 young male. This account of an immature specimen seems to have deceived Wilson. The great similarity between 

 the young bird of his Sylvia coronata and the Yellow-rumped Fly-catcher of Edwards — both having the back olive- 

 green, — led him to think they were the same. The passage in Edwards runs thus : " The tail feathers, except the 

 two middlemost, which are black, have the middle parts of their inner webs white, their tips and bottoms being black." 

 Now this is a strong and peculiar character in Wilson's bird ; for although nearly all the Sylvicolce have the two or 

 three outer feathers on each side marked with white, the S. magnolia of Wilson is the only one we are acquainted with 

 where this colour extends through the middle of all the lateral feathers. — Sw. 



