IIG Dr. Such's Descriptions of new Brazilian Birds. 



apice fuscae. Tectrices inferiores albido-rufae fusco-fasciatae. 

 Abdominis latera parce albido-lineata. Rostrum nigrum, pedes 

 graciliores subpallidi. Longitudo corporis^ 8 ^ ; alee a carpo ad 

 remigem 4''''"5 4i^; caiidcB^ ^toJ rostri ad frontem, 1 |, ad 

 rictum, 1 -J^; tarsi, 1 -jV 5 digiti medii, i^; interni, 4^; hal- 

 lucisy -i. 



I find no description of either of the foregoing species ia M. 

 Lichtenstein's Monograph * on the genus Dendrocolaptes, The 

 first of my species seems to come nearest the description of X). 

 longirostris, 111., but the white mandibles of that bird (rostro 

 compresso alho; p. 200,) seem at once to distinguish it from my 

 bird in which the bill is black ; the colour of the bill, as well as 

 its form, being considered as affording a strong specific character 

 in this genus. My D. crassirostris bears some resemblance also 

 to D. scandens, or the Gracula scandensy Lath., the Picucule de 

 Cayenne of the " Planches Enlumines"+ But the transverse 

 dusky stripes on the back at once distinguish the latter bird from 

 mine. The birds of this genus exhibit a great similarity of colour- 

 ing among themselves, so much so as to render it difficult to dis- 

 tinguish the species, unless by the structure of the bill. This is 

 so far the case in the two species above described, as to have in- 

 duced me to suppose when I first met with them, that they were 

 varieties of one species. But the shorter bill and more slender 

 legs and feet of D.fortirosiris point out a sufficient ground of 

 distinction, as well as some minute characters in the colouring of 

 the two species, which are particularized in the foregoing descrip- 

 tion of them. These differences I found to be constant between 

 the two species, having had an opportunity of examining a number 

 of specimens of each, among the birds collected by me in the 

 sequestered part of Brazil, which I have already mentioned as the 

 scene of my zoological researches, and where they were by no 

 means uncommon, 



* Berlin Transactions for 1818—1819. p. 197. + PI. 621. 



