570 MESSRS. SCLATER AND SALVIN ON [May 23, 



Long. tota4*3, alee 2*1, alse rem. prim. 1"3, caudae 1*5, tarsi 0*6, 

 rostri ab aug. oris 0*7 poll. Angl. 



Hab. River Amazons (1850). 



Obs. Species fronte rubra et cauda rufa insignis. 



(Jf this apparently new Hylophilus, Mr. Wallace's collection con- 

 tains unfortunately but one specimen. It is easily distinguishable 

 by its red front and rufous tail from every other species of the genus 

 known to us. H. ochraceiceps has also a rufous tail, but of a much 

 more ochraceous tinge, and in other respects does not much resemble 

 the present bird. 



The fourth, fifth, and sixth primaries of H. rubrifrons are nearly 

 equal and longest ; the third slightly exceeds the seventh ; the second 

 just equals in length the longest secondary. The exposed portion 

 of the first primary measures 07 inch. 



—^17. Hylophilus semicinereus, sp. nov. (PI. XXX. fig. 2.) 



Supra viridi-olivaceus, nucha vix cinerascente : subtus pallide 

 cinereus, ventre medio albicante, crisso fiavo tincto : subalari- 

 busjlavis : rostro Icete corneo, pedibus pallidis. 



Long, tota 4*5, alae 2'1, alse rem. prim. 1*2, caudse \'7, tarsi 0*7, 

 rostri ab ang. oris 0*6. 



Hab. Para (Wallace). 



One example only of this Hylophilus also is in Mr. Wallace's col- 

 lection, obtained at Para in May 1849. It is likewise a distinct 

 species of the genus, readily recognizable by its uniform pale cinereous 

 colour below. The first primary measures 0' 75 inch from the insertion. 

 The second is 0*25 inch shorter than the third, fourth, fifth, and 

 sixth, which are nearly equal and longest. 



Fam. Ccerebid^. 



18. Dacnis cayana (Linn.). 

 Para. 



19. CcEREBA c^RTJLEA (Linn.). 

 Upper Rio Negro. 



20. CcEREBA cyanea (Linn.). 



Para, Feb. 1849, and Upper Rio Negro, Feb. 1850. 



21. Certhiola chloropyga. Cab. 



Three Mexiana specimens of this variable bird do not seem to 

 differ from the Brazilian C. chloropyga. A fourth skin from Cobati, 

 Rio Negro, shows a small white wing-spot, but does not otherwise 

 differ. The last may be correctly referable to C. guianensis ; but 

 we are at present unable to appreciate the differences between the 

 local races of this variable bird. 



Fam. Tanagrid^. 



22. Euphonia cayana (Linn.). 

 Para. 



