88 Zoological Society : — 



subtus pullide cinnamomescenti-albido, lateribus olivaceo tinctis : 

 rostro (libido, cuhnine nigrescenti-plumbeo : pedibits pallidis. 

 Long, tota 6-2, alae 3*6, caudee 3-1. 



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

 is A. gidanensis (PL Enl. 686, 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 

 quttulata, his guttuUs nigra cinctis et dcinde umbrino-brunneo 

 terminatis: loris et gutture medio ochracescentibus, nigrcscente 

 paululum variegutis : rostro superiore nigra, inferiore Jiavido, 

 pedibus dure brunneis. 



Long, tota 5-.0, alee 2*5, caudse 2-.5. 



MINL Verreaux have transmitted to me a single specimen of this 

 bird, which forms a second species of the genns Marffarornis, instituted 

 by Reichenbach for the Anabates squuiniger, Lafr. & d'Orb. M. 

 de Lafresnaye has also coined the name Anabasitta for the same 

 form, but 1 believe the first-mentioned terra has a slight priority. 

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

 The yu'esent 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. \\\ M. brunnescetis 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 

 Maryarornithes apart, but ]\L de Lafresnaye, who knows both species, 

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

 been comparing the present bird. 



Alectrurin.^ ? 



9. octhoeca fumicolor, sp. uov. 



O. supra fmnaso-brunnea, dorso into rufescentiore : alis caudaque 

 nigris : tectricibus alarum rufo bivittatis, et secandariis ultimis 

 extus rufescente marginatis : superciliis latis et frante ad uucham 

 ochracescenti-albis : subtus brunnescenti-murina, ventre medio 

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

 pedibus nigris. 



Long, tota 6 0, alee 3'5, caudse 30. 



