87 
been previously characterized, namely H. auritus, H. auriculatus, 
and H. Barroti. One of these new species, for which I propose the 
specific name of purpureiceps, is nearly allied to H. Barroti, but 
differs from that bird in having a much shorter bill, in the blue of 
the head being of a paler purple, and in that hue not being confined 
to the crown, but extending some distance down the nape of the 
neck. This species was obtained from the districts near Popayan. 
The second species, for which I propose the name of phainolema, 
has several characters in common with A. auritus and H. auricu- 
latus ; it differs, however, from both those species in the beautiful 
metallic-green colouring extending over the throat and front, as well 
as the sides of the throat. The two species may be described as 
follows:— . 
HELIOTHRIX PURPUREICEPS. 
Male: Forehead, crown and nape beautiful purplish-blue ; upper 
surface, upper tail-coverts, and upper and under wing-coverts beauti- 
ful golden-green ; mark below the eye and ear-coverts black, termi- 
nating in a small blue tuft; below the black a streak of rich luminous 
green; wings purplish-black ; central tail-feathers bluish-black ; 
lateral tail-feathers, chin, throat, and under surface, pure white ; bill 
black ; feet flesh-colour. 
Total length, 41 inches; bill, 2; wing, 23; tail, 14. 
Hab. Popayan. 
HELIOTHRIX PHAINOLEMA. 
Male: Head, upper surface, upper tail-coverts, upper and under 
wing-coverts rich golden-green, very brilliant on the head; wings 
purplish-black ; four central tail-feathers bluish-black ; lateral tail- 
feathers snowy-white ; below and behind the eye a lengthened mark 
of black, terminating in a violet-blue tuft ; chin, throat and sides of 
the neck rich luminous green ; breast and under surface pure white ; 
bill black; feet flesh-colour. 
Total length, 43 inches ; bill, 1; wing, 23; tail, 17. 
Hab. River Napo. 
2. On a New SpEcIEs or THE GENUS Prion. 
By Joun Gou tp, F.R.S. 
(Aves, Pl. XCIII.) 
Through the kindness of Mr. Yarrell, I have the pleasure of 
bringing to the Meeting a bird which I conceive to be a new species 
of Prion, captured on the island of Madeira, or on the neighbouring 
rocky islets called the Desertas. I also exhibit five other species 
(forming part of my own collection), which I consider to belong to 
the same beautiful group, and which were captured by myself during 
my voyages to or from Australia. 
The entire series present a great similarity in the colour of their 
‘plumage, but a great diversity in the breadth or lateral development of 
