304 Mr. P. L. Sclater on the Genus Hylophilus. 



ribus et crisso flavidis ; rostro corylino, pedibus fuscis : 

 long, tota 4*5, alse 2'\, hujus rem. primi 1*3, caudse 1"8. 



Hab. Guiana int., Venezuela litt. et isthmus Panamensis. 



Mus. P. L. S. et S.-G. 



This species I have hitherto usually called H. hypoxanthus, 

 identifying it with the bird described by Herr v. Pelzeln"^ 

 [1. s. c.) under that name. Mr. Lawrence having kindly 

 forwarded to me for examination the typical example of his 

 H. aivrantiifrons from Panama, described in 1861, I have 

 come to the conclusion that these two supposed species must be 

 united imder this latter name. Mr. Lawrence^s skin so closely 

 resembles some of the Venezuelan and Guianan birds, that in 

 my opinion it would be impossible to separate them. I may, 

 however, notice that in the Panama skin there is no tinge of 

 fulvous colour on the breast, such as is seen in most adult 

 specimens of the Venezuelan and Guianan bird. 



The young and imperfect specimen of Hylophilus from 

 Babahoyo, Ecuador {Fraser), in my collection, mentioned 

 P. Z. S. 1860, p. 273, is perhaps nearer this species than to 

 any other, but will probably turn out to be distinct when the 

 adult is obtained. 



List of Specimens examined. 



1, 3. Guiana ?, Mus. P. L. S. 



3. Trinidad?, Mus. S.-G. 



4. Trinidad ?, Mus. P. L. S. 



5. S. Esteban, Venezuela [Goering], Mus.P L. S. 



6. 7. S. Esteban, Venezuela [Goering], Mus. S.-G. 



8. Valencia, Venezuela [McLeannan] , Mus. P. L. S. 



9. Panama [McLeannan] , Mus. G. N. L. Type of H. au- 

 rantiifrons. 



10a. Hylophilus acuticaudus. 



Hylophilus acuticauda, Lawr. Pr. A. N. Sc. Phil. 1865, 

 p. 37 ; Baird, Bev. Am. B. i. p. 378. 



* Hen- V. Pelzeln has kindly compared one of my Venezuelan skins 

 of this bird (which I sent to him for the purpose) with the typical ex- 

 amples of H. hypoxanthus in the Vienna Museum, and is " convinced that 

 they belong to the same species." 



