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 (Notės 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 f umigatus of Brazil and T. yrmji of Mexico, but 

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

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

 of rufous. There are two examples of this šame bird in the coUec- 

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

 " Bogota." 



7. CiNCLUS LETJCONOTUS, Sp. nOV. 



" Cinclus leucoceplialus, Tsch." ; Lafr. Rev. Zool. 1847, p. 68. 



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

 ventrem albis : crisso et hypoehondriis nigris ; pileo nigro 

 striolato : rostro nigro, pedibus corneis. 



Long. totą 5n, alse 3'8, caudse 1*6, rostri a fronte "6. 



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



Long. totą 5*0, alse 3'1, caudse \b, rostri a fronte "4. 



Hab. In Nova Grenada et rep. Eąuatoriana. 



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



This species is not the Cinclus leucocej)halus 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 vshite 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 likę 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 vvere 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 Pašto 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 

 šame 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 caudcB superioribus 

 cum cauda totą rujis, rectricum (precipue mediarum) parte 

 media nigricante : subtus Jlavus ; gula albicante, pectore rufo 

 paulum mixfo, tectricibus alarum inferioribvs pallide flavis. 



