274 



I have had examples of this Thrush some time in my possession, 

 and have indicated it without naming it in my first list of birds from 

 Bogota (P. Z. S. 1855, p. 145, sp. 168). Having lately obtained 

 other specimens, I have no hesitation in describing it as apparently 

 unnamed, unless indeed it chance to be Prince Bonaparte's Turdus 

 luridus (Notes Orn. p. 28), which however it is impossible to deter- 

 mine from so brief a notice. In its uniform style of colouring it 

 resembles Turdus fumigatus of Brazil and T. grayi of Mexico, but 

 may be immediately distinguished by the colour of the under wing- 

 coverts, which are cinereous like the breast, with a faint tinge only 

 of rufous. There are two examples of this same bird in the collec- 

 tion of the Academy of Natural Sciences of Philadelphia, also labelled 

 " Bogota." 



7. ClNCLUS LEUCONOTXJS, sp. nOV. 



" Cinclus leucocephalus, Tsoh." ; Lafr. Rev. Zool. 1847, p. 68. 



Niger : pileo cum nucha, dorso medio et corpore subtus ad imum 

 ventrem albis : crisso et hypochondriis nigris : pileo nigro 

 striolato : rostro nigro, pedibus corneis. 



Long, tota 5*5, alse 3 # 8, caudse 1*6, rostri a fronte '6. 



? (?) . Mari similis sed minor, rostro breviore. 



Long, tota 5 - 0, alse 3*1, caudse 1'5, rostri a fronte "4. 



Hab. In Nova Grenada et rep. Equatoriana. 



Mus. Paris., Gul. Jardine Baronetti, et P. L. S. 



This species is not the Cinclus leucocephalus of Tschudi, as I as- 

 certained this summer by taking my specimens to Neufchatel and 

 there comparing them with the type. Tschudi' s bird is much larger 

 and has the white below confined to the breast, and no white back. It 

 is in short quite a different bird. The most peculiar thing however 

 about my two specimens is, that one is larger than the other, and 

 has the bill strikingly longer. After some hesitation I have attri- 

 buted this to sex, though I am not aware of a similar difference 

 occurring in the bills of other Cincli. I may remark, however, that 

 though this bird is seemingly much like Cinclus in form, I cannot 

 help thinking that, when we know more about it, we may find occa- 

 sion to refer it to a different genus. My examples were picked out 

 of a large number of ordinary Bogota skins, of which they have the 

 usual unmistakeable appearance. The bird described by Lafresnaye 

 was brought from Pasto by Delattre, and a specimen in the Paris 

 Museum — marked Cinclus leucocephalus — is said to be from the 

 vicinity of Quito. Sir William Jardine possesses examples from the 

 same locality. 



8. Tyrannus atrifrons, sp. nov. 



T. supra pallide cineraceo-brunneus ; vitta frontali inter oculos 

 nigra, crista pilei medii celata aurea : alis nigricanti-brun- 

 neis, extus rufo late marginatis : tectricibus caudce superioribus 

 cum cauda tota rufis, rectricum (precipue mediarum) parte 

 media nigricante : subtus fiavus ; gula albicante, peciore rufo 

 paulum mixto, tectricibus alarum inferioribns pallide flavis, 



