( 356 ) 



though still smaller than the types, and the ear-coverts are dull brownish. Should 

 additional specimens from Borba prove these slight differences to be constant, the 

 name /•.'. zosterops must be restricted to the Rio Negro form, for in Pelzeln's 



original diagnosis the lores and car-coverts arc described as greyish. 



Mus. Vindob., No. 17738, <J ad., Marabi tanas, 



March 13th, 1831 



Mus. Vindob., No. 17730. 6 ad., S. Carlos, 



February 14th, 1831 

 Mus. Brit., A ad., Borba, February 12th, 1830 

 Mus. Vindob., No. 1774n, ? irum., Borba, 



June 23rd, 1830 



Mns. Tring, No. 1459, i ad., Borba, December 



11th, 1906 



Mus. Tring, No. 1334, adult, Borba, November 



14th, 1906 



33. Mionectes oleagiiieus oleagineus (Lcht.). 



ifuscieapa oleaginea Liehtenstein, Verz. Dull. p. 55 (1823. — Bahia). 

 Minn., i. oleagineus Pelzeln, Zur Ornith. Bras. ii. 1868. p. 104 (Borba). 



No. 1154. ? (?) ad., Humaytha, 24. viii. 06. "Iris browu, feet grey, bill 

 blackish grey." 



34. Ramphotrigon ruficauda (Spix). 



Cf. supra, p. 48. 



Rhgnchocyclus ruficauda Pelzeln, Zur Ornith. Bras. ii. 1868, p. 110 (Borba). 



Nos. 1188, 1228. A ? ad., Humaytha, 30. viii., 13. ix. 06. " Iris brown, feel 

 black or bluish black, bill black." 



35. Pitangus lictor (Lcht.). 



Lauius lictor Lichtenstein, Verz. Dull p. 49 (1823.— Pari). 



No. 990. (? imm., Humaytha, 26. vii. 06. " Iris browu, feet and bill black." 

 Agreeing perfectly with our series from British Guiana, Suriuam, Venezuela, &c. 



36. Onychorhynchus coronatus (P. L. S. Mull.). 



Cf. supra, p. 12. 



No. 926. S ad., Humaytha, 15. vii. 06. " Iris brown, feet yellow, bill black, 

 below yellow."— Wing 78, tail 63, bill 24 mm. 



This bird, a very adult male, agrees in coloration with another <S ad. from 

 ( Ihamicnros, N. Pern (Bartlett coll. — Mus. Brit.). Both differ from a series of true 

 O. c. coronatus of Cayenne, Santarem, and the ('aura valley by their decided!) 

 brighter ochraceous under-parts and by having the npper tail-coverts uniform, 

 not, barred with dusky. The types of O. castelnaui Dev.* show the same bright 

 tint of the lower surface. The female has the upper (ail-coverts uniform, while 

 in the male they are narrowly barred with dusky on their apical portion. An 



* Rev. Mui/ /mil. 1849. p. 66 (" mission de Sarayaou, I'ainpa del Sacramento," Eastern Peru). 



