*4^J- 



V1RU08YLVIA. 



887 



beyond the c-osed wings and encroaching on the front part of the 

 breast, is never seen in olicacea, where any olive is concealed. The 

 crissum and axillars are much brighter yellow ; the inner edges of 

 the quills yellowish, not white. The tail feathers are decidedly 

 olivaceous in their concealed portion, not clear brown ; and the 

 olivaceous of the back is much brighter and more yellow. 



4'. 







(3,976.) Eyeii yellow. (38,829.) Eye red. (38,928.) Eye chocolate. 



1st 



bill 

 toe 



L'va- 

 or a 



less 

 e of 

 s ill 

 ver, 

 eye 

 ive 

 3ing 



VireosylTla cliivi. 



Sylvia chivi, Vieill. Nonv. Diet. XI, 1817, 174 (based on Azara, Con- 

 tramsestre Qaviero, Apuntam. II, 34, no. 162). — Ib. Encyolop. 

 M6lh. 1823, 437. 



Hab. La Plata region ; north to Bahia. 



(No. 16,340, 9 .) General distribution of color the same as In V. oHvacea. 

 The concealed portion of tail feathers more olivaceous than brown. The 

 inner edges of the quills pale olivaceous- 

 yellow, of the reotrices brighter yellow. 

 Sides of the body greenish-yellow. Axil- 

 lars and crissum sulphur yellow. Super- 

 ciliary dusky stripe deep and distinct. 

 Bill plumbeous, dusky above, pale at the 

 base below. 



Third quill longest ; 2d and 4th very 

 little shorter; Ist shorter than the 5th, 

 nearly intermediate between it and the 

 6th. 



(No. 16,340.) Total length, 4.95 ; wing, 2.45 ; tail, 2.10 ; width of lateral 

 feather, .25 ; difference of Ist and 2d quills, .14, of 1st and 3d, .21, of 2d and 

 ■^th, .09, of 3d (longest) and 9th, .54 ; length of bill from forehead, .59, from 

 nostril, .35, along gape, .67 ; tarsus, .65 ; middle toe and claw, .50, claw alone, 

 •14; hind toe and claw, .43, claw alone, .15, 



A male bird, No. 30,973, from the Vermejo, ia of precisely the mame size. 

 22 May. 1866. 



Vireoiylvici chivi. (Vormeijo Riv.) 



