190: Mr. VigoYB'& Sketches in Ornithology. 



p.257. t. \1. Cat. Car. 1. t. 48. Wils. Am.Orn. Vol. \. 

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

 Oriolus minor. Gmel. Syst. Vol.1, p. 394. sp. 46. Lesser 



Black Oriole. Lath. Gen. Syn. Vol. II. p. 446. sp. 38. 

 Oriolus varius. Gmel. Syst. Vol. I. p. 390. sp. 38. Le Carouge' 

 de Cayenne. PI. Enl. 607. f. 1. Bastard Baltimore, fern. 

 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. S***. OrloKis mutatus, or Orchard Oriole. Wils. Am. 

 Orn. Vol. 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 

 flomewhat 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. 



Chuysopterus. X. niger^ capite subcristatoy ptilis uropygioque 



Jlavis. 



Tab. Sup. 9. 



Capitis frontis verticisque plumae paululuin elongatse, cristam 

 parvam formantes. Remiges rectr-icesque subtus subfusc». Ros- 

 trum pallidum. Pedes nigri. Longitiido corporis, 6y; alee a 

 carpo ad remigem 3"^"*, 4; cauda;, 3|; tarsi, l^;rostriad 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 

 Xmdhornus and Cassicus, the first group which I particularized 

 in the subfamily. They are equally distinguished from Xanthor- 

 nus by the struct me of their wings, of which the first four tail 



