88 Zoological Society : — 



subtus pallide cinnamomescenti-albido, lateribus olivaceo tinctis : 

 rostro (libido, cnhnine nigrescenti-plumbeo : pedibus pallidis. 

 Long, tota 6*2, alae 3*6, caudae 3"1. 



The only Anabates I know of likely to resemble the present species 

 is A. guianensis (PL Enl. ^'^Qy fig. 2). I have never seen that bird, 

 but if it has been correctly described, there is no doubt that this 

 species is distinct. 



7. Xenops RUTiLANS, Temm. PL Col. 72, fig. 2. 



A Bogota skin received from MM. Verreaux seems referable to 

 this bird, though there is rather more black in the tail than in my 

 Brazilian specimens. 



8. Margarornis brunnescens, sp. nov. 



M. umbrino-brunnea, capitis dorsique superi pennis obsolete et an- 

 gustissime nigro marginulatis : infra pallide ochracescenti-albo 

 guttulata, his guttulis nigro cinctis et deinde umbrino-brunneo 

 terminatis: loris et gutture medio ochracescentibus, nigrescente 

 paululum variegatis : rostro superiore nigro, inferiore Jlavido, 

 pedibus dare brunrieis. 

 Long, tota 5*5, alse 2*5, caudse 2 '.5. 



MM. Verreaux have transmitted to me a single specimen of this 

 bird, which forms a second species of the ^emisMa?'garoimis, instituted 

 by Reichenbach for the Jnabates squamiger, Lafr. & d'Orb. M. 

 de Lafresnaye has also coined the name Anabasitta for the same 

 form, but I believe the first-mentioned term has a slight priority. 

 The type of the genus is very common in collections from Bogota. 

 The present bird may be distinguished from it at once by the want 

 of the bright chestnut colouring on the back and tail. In form, 

 however, there is not much difference. In M. brunnescens the beak 

 is rather longer, and the first two primaries proportionately rather 

 shorter. The elongation of the naked stems of the rectrices is carried 

 to a greater extent in the present species than in the other. There 

 are twelve tail-feathers, and they all terminate in a similar hair-like 

 point. The plumage of the two species below shows much similarity, 

 but in the ''brunnescens^' the tear-like spots are yellowish. 



I may remark that Reichenbach has kept the Bogota and Bolivian 

 Margarornithes apart, but M. de Lafresnaye, who knows both species, 

 considers them identical. It is with Bogota specimens that I have 

 been comparing the present bird. 



Alectrurin^ ? 



9. OcTHoiicA FUMicoLOR, sp. nov. 



0. svpra fumoso-brunnea^ dorso imo rnfescentiore : alis caudaque 

 nigris : tectricibus alarum rufo bivittatis, et secondariis ultimis 

 extus rufescente marginatis : superciliis latis et fronte ad nucham 

 ochracescenti-albis : subtus brunnescenti-murina, ventre medio 

 albescentiore, gula quasi dorso concolore, sed pallidiore : rostro et 

 pedibus nigris. 



Long, tota 6 0, alse 3*5, caudse 30. 



