36 Mr. C. E. Hellmayr on the 



more yellowish than in the male*. Bill and feet as in 

 the latter; iris "brown-red/' according to the collector. 

 Wing 56 ; tail 27 mm. 



In the original description I compared the species with 

 P. opalizans; but a close examination proves beyond doubt 

 that, notwithstanding its green plumage, it clearly belongs 

 to the section of P. coronata. The bill is of the same form, 

 with the upper mandible blackish • the feet are dark horn- 

 brown and the iris red. On the other hand, P. opalizans, 

 P. nattereri, and P. gracilis form a natural group, charac- 

 terized by the flesh-coloured feet, white iris, and pale yellow 

 margins to the inner webs of the remiges. 



The female of P. exquisila stands somewhat between the 

 two groups, having the dark brown feet and the bill of 

 P. coronata, and the bright yellow abdomen of P. opalizans 

 and its allies. From the type of P. gracilis it differs at a 

 glance by the broad dark green jugular band, the dark brown 

 feet, and the lack of the yellow inner margins to the remiges. 



Dr. Goeldi has lately shown me some skins of this bird 

 obtained on the Upper Rio Puriis, in West Brazil, near the 

 Bolivian frontier. They appear to be perfectly similar to 

 the types from Peru. 



In the British Museum there are two specimens obtained 

 by Bartlett near Chyavetas and on the Rio Kuallaga, Eastern 

 Peru. They have the crown a shade darker sky-blue than 

 the typical examples from Chuchurras, and encircled by a 

 narrow azure-blue border as in P. coronata. The yellow on 

 the lower parts is not quite so extensive, and the throat is 

 rather darker green. An evidently young male from the 

 Rio Jurua (Mus. H. v. Berlepsch) agrees with them in the 

 colour of the under-parts, but the crown is of a uniform dull 

 ultramarine-blue. 



It must remain an open question whether the birds 

 from the Huallaga, Ucayali, and Jurua, constitute a race 

 different from P. exquisita or not. Anyhow, a skin in 



* There is a misprint in the original description (op. cit. p. 57) as 

 regards the differences between P. exquisita $ and J', gracilis. It 

 should read : " in having . . . no pale yellow edges to the inner webs 

 of the remiges." 



