iSSS.] Berlepsch, Descriptions of New Neofrofical Birds. 457 



8. Myiobius ridgwayi, sp. nov. 



DiAG. — M. capite supra cum dorso superiore brunneo-olivaceis, captit 

 viridescentiore. Uropjgio et corpora subtus unicolore sordide ochraceo- 

 flavis. Remigibus cum alarum tectricibus superioribus brunneo-nigris 

 brunneo-olivaceo marginatis et luvatis. Cauda unicolore nigra. Pilei 

 medii plumis in mare adulto aureo-flavis. 



Obs. M. xatifkopygo (Spix) ex Bahia affinis sed colore lu'opygii (in M. 

 xanthopjgo sulphureo) et colore corporis inferioris ochraceo unicolore (in 

 M. xanthopjgo — nisi jugulo lateribusque ochraceo brunneis — pallide 

 sulphureo) necnon colore capitis et dorsi olivaceo brunnescentiore primo 

 visu distinguendus. 



Habitat: Prov. Rio de Janeiro, S. Brazil : Petropolis ((J ad. in Mus. \l. 

 V. B. ex Rev) (?) " South America " (Rio bv make) U. S. Nat. Mus. No. 

 24005 (Cruise of the Delaware. Dr. G. R. Horner). 



Jad. Long. tot. 122, al. 6ii, caud. 62^, culm. 9^, tars. 17^ mm. 



I have long had a Myiobius from Petropolis, Prov. Rio 

 (received from Dr. E. Rey of Leipzig), in my collection which I 

 regarded as quite distinct from M. xanthopygus Spix, but 

 having seen only one specimen, and being at that time somewhat 

 uncertain about Spix's bird, I was unwilling to describe it as a 

 new species. Now Prof. Ridgway lately sent me for examination 

 another example of the same species which, although the exact 

 locality is not stated, I should think from the make up of the skin 

 is also a Rio skin. It agrees very well with my Petropolis speci- 

 men with the exception that it has no yellow on the vertex, from 

 which I believe it to be a female or immature bird. The wing 

 and tail-feathers are moulting, and consequently it presents some- 

 what smaller dimensions. At the same time 1 have been able to 

 examine in the Munich Museum the type of Platyrhynchus 

 xanthopygus Spix, said to be from Rio de Janeiro*, which I 

 found to be quite identical with Bahia skins in my collection. 



Now M. ridgwayi, which I have named in compliment to my 

 illustrious friend Prof. Robert Ridgway, differs very decidedly 

 from two specimens in my collection from Bahia, viz., true 

 xanthopygus Spix, in the following points of distinction. 



In Af. ridgwayi the rump and all the underparts of the body, 

 including under wing- and tail-coverts, are of a nearly uniform 

 ochraceous yellow, and there is no trace of darker coloring on 

 the jugulum (or upper breast), sides of body, and under tail 



H> This may be an erroneous locality ; there is no locality noted in Spix's work, Vol. 1 1 , 

 p, 9.— H. V. B. 



