(42) 

 63. Euscarthmus margaritaceiventer margaritaceiventer (I.afr. & D'Orli.). 



Todirostrum margaritaceiveiiler Lafresnaye & D'Orbi^ny, i^i/n. A v. i. in : Muf/. Ziml. 1837, cl. ii. p. 4G 

 (Chiquitos, Bolivia). 



EtisaarOimus mnrgaritaceiveiiler Pelzeln, /.<■, p. 101 (Porto ilo Rio Aragnaj). 



Nos. 2120, 2134, 215(). Si ad., Rio Thesoiiras, May iniiO.— Wing 50J, 50, 

 48 ; tail 4.51, 43i, 43 ; bill, 14, 13| mm. 



Practically identical with specimens from Paraguay and Mattogrosso. The 

 flanks are distinctly washed with pale yellow, and the middle of the throat is 

 white with very few if any hrownish streaks. Tiie range of E. m. wuclicreri 

 Sol. & Salv. a])pears to be confined to Bahia. Cf. Berlepsch k Hellraayr, Journ. 

 f. Ormth. 190.5. pp. 0-11. 



04. Euscarthmus striaticollis (Lafr.). 



Todiroslrum strialietilh Lafresnaye, 7?ci\ .1/(17. •^""', 1853, p. 68 (Bahia). 

 EuHcarlhiims Ktriiilioollia Pelzeln, l.r. p. 101 (Aragu.iy). 



No. 2353. c? ad., Rio Araguaya, August 1900.— Wing 55 ; tail 44 ; bill 1 5 mm. 



Difters from several Bahia skins by its much duller and darker olive-green 

 (less yellowish) back, greenish (not mouse-brown) cap and decidedly brighter yellow 

 under-parts, with the cliest and sides more strongly tinged with olive-greenish. 

 Natterer's female from the Araguay, however, is not appreciably diflerent from 

 Bahia specimens. 



65. Phyllomyias brevirostris virescens (Allen). 



[Plalijrhynclius brevirostris Spix, Av. Brut. ii. p. 13. tab. xv. fig. 2 (1825.— Rio de Janeiro).] 

 Sulhgatus virescens Allen, Bull. Amer. Mas. ii. p. 149 (1889. — Chapada, Mattogrosso) ; Ridgway, 

 bird' North and Middle America, iv. 1907. p. 420, note b. 



:No. 2021. S ad., Gnyaz, April 1000.— Wing 37 ; tail 53 ; tars. 15 ; bill 8i mm. 



[Amer. Mns., New York, No. 33,316. c? ad., Chapada, Mattogrosso, May 8, 

 1885. Type of S. virescens Allen.- Wing 58| ; tail 52 ; tars. 10 ; bill 8i mm.] 



Tlie Goyaz specimen is practically identical with the type of S. rirescens 

 kindly lent by Dr. J. A. Allen for comparison. 



This species is by no means a member of the genus Stihlcyatiis, but a typical 

 r//i/!lo/i/i/ias, to some e.Ktent intermediate between P. b. bixvirostris (Spix), of 

 Sonth-Eastern Brazil, and P. b. incanescens* (Wied), of Bahia. 



It differs from a series of the latter form by the following details : Breast and 

 abdomen are brighter and more uniform yellow; the cap is decidedly paler, light 

 ashy (not blackish) ; the back more greenish (less greyish) ; the bill rather stouter ; 

 wings and tail rather longer. 



From P. b. brei-irostris, on the other hand, it may be distinguished by the 

 much paler yellow underparts, with the throat purer and more extensively white, 

 and the flanks much less tinged with greenish or greyish ; the back much paler 

 and duller, greyish green (instead of oil- or bright olive-green) ; the cap light ashy, 

 more or less contrasting with the colour of the back (instead of being green like 

 the latter) ; the wing-bauds much paler, dirty whitish or greyisii wliite, the edges 

 to the quills whitish or yellowish white (instead of bright olive-yellow). 



* Mmcipeta incanescens Wied, Jicitr. Xalurg. Bras. 3. ii. p. S9.S (1S31.— BaUia). — Phyllomyias livUlus 

 (Temm. IIS.) Pelzeln, Zur Orn. Bras. ii. p. 17« (ISiiS.— Bahia).— P. hcrleptchi Sclater, P.Z.S. Limit. 1887, 

 p. 49 (Bahia).— Cf. Berl. k IleUm. Jimrn.f. Orn. 11)03. pp. 24-5. 



