f 190 Mr, Vigors's Sketches in Ornithology, 



p. 257.. t. 12. CaL Car. \. t. 4S.. TVifs. Am. Orn. Vol. I. 



p. 23. pi. 1. f. 3. pi. 53. f. 4. 

 Oriolus minor. Gmel. Si/s(. Vol. I, p. 394. sp. 46. LeS8er 



Black Oriole. Lath, Gen. St/n. Vol. II. p. 446. sp. 38. 

 Oriolus varius. Gmel. Si/st, Vol. I. p. 390. sp. 38. Le Carouge 



de Cayenne. PI. Enl, 607. f. I. Bastard Baltimore, fem. 



Cat, Car. Vol. I. t. 49. f. inf. Chesnut and black oriole. 



Lath. Gen, Syn, Vol. II. p. 437. sp. 24.— Vol. III. p. 119. 



sp. Ed. 2*^*. Oriolus mutatus, or Orchard Oriole. Wils. Am. 

 ' Orn, Yo\, I. p. 64. pi. 4. f. 1, 2, 3, 4. 



The latter species seems to stand at the extremity of this group 

 where it joins Icterus ; the bill being slightly curved, and the tail 

 somewhat more graduated than in the adjoining species. 



The following bird, which I do not find any where described^ 

 may be added to the typical species of this genus. *: 



Chkysopterus. X, niger^ capite suhcristato^ ptilis uropygioque 



Jlavis, 



Tab. Sup. 9. 



Capitis frontls verticisque plumae paululum elongate, cristam 

 parvam formautes. Remiges rectricesque subtus subfuscaj. RoS' 

 trum pallidum. Pedes nigri. Longitudo corporis^ 6J ; alee a 

 carpo ad remigem S"""™, 4 ; caudoe, 3^ ; tarsiy 1^ ; rostri ad fron- 

 tem, ^. 



Habitat in. Brasilia. 

 . From the foregoing genus Xanthornus^ as it was defined by 

 M. Cuvier, another type of form may still be separated. . All his 

 Xanthorni possess a straight and conical bill, the margin of the 

 lower mandible of which forms an angle, as has been observed, 

 near the gape. But in some species of the group thus distin- 

 guished, the bill is much stronger than in the others, and possesses 

 considerably more breadth and depth at the base. In this res- 

 pect the species to which I allude stand intermediate between 

 Xanthornus and Cassicusy the fust group which I particularized 

 in the subfamily. They are equally distinguished from Xanthor- 

 nus hj the structure of their wings, of which the first four tail 



