286 TWO CENTENARIES AND A QUARTER 



17. PsARis Guianensis. 



Cinereous white: head^ ears, chin spot, wings, and tail, 

 black : orbits naked : bill red, tipt with black. Female 

 with black stripes. Length of the wing, 4^ inches. 



Inhabits the interior of Guiana. Mr. Schombergh. 



Differs from P. Cayenensis, in having the orl)itsred and naked. 

 Total length 8 inches; bill, gape If^; from the front 1 ; wings 

 A^ ; tail, base 3. The female is coloured like the male, with the 

 addition of a large blackish brown spot in the middle of the 

 back feathers, and a narrow stripe on those of the chin, throat, 

 breast, and part of the body : the black hardly occupies the 

 outer half of the bill. 



18. PsARis Braziliensis. 

 Cinereous white : head, ears, chin spot, wings, and 



tail, black : orbits, naked : bill black, the marginal 

 base red. Female with the head, ears, and back, dark 

 cinereous, striped with blackish : length of the wing, 

 above five inches. 



Inhabits Northern Brazil. 



Differs from Cayenensis in having the orbits red and naked ; 

 and from Guinensis in being larger, in the bill being entirely 

 black beyond the nostrils, and in the female being without a 

 black hood on the head and ears, as in that species. It is the 

 largest and commonest of Brazil. 



19. PsARis Natterii. 



Cinereous white : head, ears, wrings, and tail, black : 

 chin without a black spot : bill black : orbits feathered. 

 Wings 4 1 inches long: spurious quill falcate : first quill 

 much longer than the fifth. 



Inhabits Southern Q) Brazil. 



Size of P. Jardlnii, but the spurious quill, situated between 

 the first and second, is very conspicuous, while in the latter it is 

 totally wanting. I dedicate this new species to my friend, 

 Dr. Natterer, whose ornithological researches in Brazil, and 

 whose scientific knowledge, justly entitle him to this mark of 

 public distinction and of private regard. 



20. PsARis Selbii. 

 Cinereous white : head, ears, wings, and tail, black : 

 chin without a black spot : bill black : orbits feathered. 



