( 433 ) 

 WARBLING VIREO. 



ViREO GILVUS, BONAP. 



PLATE CXVIII. Vol. II. p. 114. 



It is very surprising that this species, which is found on the Co- 

 lumbia River, and in our Middle and Eastern Districts, enters, tra- 

 verses, and leaves the United States, in a manner xmknown to any one. 

 When on my way to the Texas, I met with most of our small birds, 

 but with none of this species. 



YELLOW-BREASTED CHAT. 



ICTERIA FIRIDIS, BoNAP. 

 PLATE CXXXVII. Vol. II. p. 223. 



In an adult male preserved in spirits, the roof of the mouth is nearly 

 flat behind, anteriorly arched and decurved, with a prominent median 

 ridge. The posterior aperture of the nares is linear, 5 twelfths long, 

 with the margins papillate. The tongue is 7 twelfths long, deeply emar- 

 ginate and papillate at the base, channelled above, tapering to a horny 

 point, which is rather blunt, but terminates in a number of slender 

 bristles, of which there are also some on its edges. The oesophagus is 2^ 

 inches long, funnel-shaped at the commencement, then 3 twelfths in 

 width, and so continuing. The stomach is rather small, considerably 

 compressed, rotmdish, 7 twelfths long, 6 twelfths broad ; its muscles 

 moderate and distinct, its tendons rather large ; its cuticular lining 

 thin, tough, brownish-red, with six rugae on one side, and four on the 

 other. Its contents are remains of insects. The intestine is 6^ inches 

 long, 1^ twelfth in width ; the coeca are extremely minute, being only ^ 

 twelfth in length. 



The trachea is 1 inch 9 twelfths long, considerably flattened, its 

 breadth 1 twelfth. The rings are 70 in nimiber, and 2 dimidiate rings. 

 The bronchi are short, of 10 half rings. There are foiu- pairs of infe- 

 rior laryngeal muscles, similar to those of the Shrikes. 



VOL. V. EC 



