SYLVICOLID.E — THE WAUHLKIiS. 



211 



Tlie c^'if^, four or fivo in immlH'r, have a clear wliito |u'r<»ini(l, aiul an* spar- 

 iii;,'ly .s|M)tte(l witli inarkin^^s of H'ddisli-lnowii, slat«s purpk*, ami lilar. In 

 H«»nic the tirst predouiinate, in otlKi-s the last three shades are nmre ahundant, 

 anil usually form a conHuent ring around the hirj^er end. They measure from 

 .02 to .G.'> of uu inch in length, and from .4'J to .50 in brea<lth. 



Section SYLVICOLE^. 



This section has been alreailv characterized as havinir a distinctly iu>tched 

 lull, well pn)vided with bristles. Of the two j^enera one, Pt'}'iss(njlo.s.sii, has 

 the bill slender, acute, somethinj^ like Iff/miuthojtkttua, and with the t(m<;ue 

 lengthened and much lacerated at end ; the other, Vcmlroica, with less acute 

 bill and tongue shorter, merely notched at tip, and a little fringed only. 



Genus PERISSOGLOSSA, BAmn. 



Perissoghtssa, BAniu, Rev. Am. Birds, 1864, 181. (Type, Motacilla tigriua, Gm.) 



Gen. Cn.vR. Form of Detidmim, but bill sleinler, .icntc, with very obsolcto notch ; the 

 conuiiifwuro gently archod or carved from the base ; 

 the gonj's also straight, or even sligiitly concave. 

 Tongue lengthened, narrow, deeply bilid (for one 

 third), and deeply lacerated or fringed externally 

 at the end ; the edge along the median portion folded 

 over on the uj)per surface, but not adherent. 



The curvature of the bill in PcrU^ofilosisa 

 tigrina is quite peculiar among the Siflvi- y 

 coHd(r with notched bills. Some Hclmin- 

 thophagas (without notch) approximate this PerUso8io.Mi nirrina, Baini. 



character, though in none, excepting H. hachmani, is it in eipial amount, — 

 all the others having the gonys very slightly convex, instead of straight, oi 

 even slightly concave. 



It is most probable that the Helinaia carhonata of Auduhon belongs here, 

 as it appears very closely allied to the type of this genus. The two species 

 may be distinguished as follows : — 



Common Characters, Afale. Top of head black. Above olive, becoming yel- 

 lowish on rump. Head, neck, and lower parts bright yellow, becoming whitish 

 posteriorly. Dorsal feathers with black centres ; breast and sides streaked with 

 black. A black streak through the eye. 



P. tigrina. Large white patches on inner webs of tail-feathers. 



Sides of head and mid<lle of throat tinged with chestnut. One large 

 white patch on wing, covering both rows of cover*:. Outer web of 

 lateral tail-feather blackish. 



