388 Mr. Such on some Brazilian Laniadce. 



T. (faem.) Capite cristato, dor so alls rectricibusque atris^ alhido' 

 fasciatis : torque nuchali corporeque subtus cineraceis. 

 Tab. Sup. f. 8. 

 Nucha obscure nigro-fasciata ; ceteris mari similis. 



These birds are the largest Thamnophili yet known, and they 

 exhibit a developeraent of the general characters of the genus to 

 the greatest extent. In the length and abrupt curvature of the 

 apex of their bills, they approach very near to Vanga^ Cuv. It is 

 with great pleasure that I seize the first opportunity of publicly ex- 

 pressing my gratitude to my friend Mr. Vigors for the liberal and 

 friendly instruction which I have received from him in my studies 

 in Natural History, by distinguishing this species by his name. 



Leachii. T. ater.) capite^ dorsoque albo-maculatis^ remigibus 

 fulvo-subfasciatis ; gula, pectore^ abdominis medioy rectri- 

 cibusque nigris ; abdominis lateribus uropygioque albo-fas- 

 ciatis. 



Rostrum pedesque nigri, Longitudo corporis 10|-, rostri ad 

 frontem 1, ad rictum 1 J^, tarsi 1^. 



/3. Abdomine toto crissoque albo-fasciatis^ rectricibus albo 

 sub -fasciatis. 



y. Multo minor. 



I have described the above three birds as varieties, although 

 from the circumstance of the species of the Thamnophili bearing a 

 considerable approximation to each other in appearance, I con- 

 ceive that they may at some future time be found distinct. I had 

 not an opportunity of examining the sex of these birds ; but I 

 have reason to suppose them to be females, having been informed 

 by the Brazilians that the male has a crest. Dr. Leach has de- 

 scribed a bird under the name of L. lineatus^ which bears some 

 resemblance to the present species ; but which may at once be 

 distinguished from it by the white markings forming slender/<w«fle 

 instead of spots. I have named this species after the above cele- 

 brated Naturalist, whose attention to this family entitles him to 



