l^xxii INTRODUCTION. 



yet another character common, I beheve, to the whole-that of the tail of the females bemg much larger and more 

 lengthened than that of the males ; the young males, too, have this organ much more prolonged than the adult 

 males ; they have all peculiarly sharp wedge-shaped bills, lengthened wings, and small feet. Judging from these 

 points' in their structure, I beheve these birds to be endowed with the power of more rapid flight than any other 

 members of the family. 



238. Heliothrtx aurita ^^^- ^^' ^^' ^13. 



Trochilus leucocrotaphus, VieilL Nouv. Diet. d'Hist. Nat. tom. vii. p. 374 ; Id. Ency. Mgth. Orn. part. 2nde, p. 571, 

 Heliothrix aurita, Reichenb. Aufz. der Col. p. 13 ; Id. Troch. Enum. p. 11 ; Cab. et Hein. Mus. Hein. Theil iii. p. 28. 

 HaUtat. Northern Brazil, the banks of the Amazon, the Guianas, and Venezuela. 



Vol TV PI ^14 



239. Heliothrtx auriculata ^ . x t . . -i.^. 



i7.&^Ari^awnm/a^«,Reichenb.Aufz.derCol.p.l3;Id.Troch.Enum.p.ll^ 



aurita, jun., Burm. Th. Bras. tom. ii. p. 336. 



HaUtat. South-eastern Brazil. 



240. Heliothrtx PHAiNOL^MA, GowW Vol. IV. PL 215. 



Heliothrix phaendeuca, Hartl. Wieg. Arch. xxii. 2. p. 23. 



■ phaenolaema, Cab. et Hein. Mus. Hein. Theil iii. p. 28, note. 



Habitat. The banks of the Upper Rio Negro. 



241. Heltothrix Barroti. 



Heliothrix purpureiceps, GomW Vol. IV. PL 216. 



Heltothrix purpureiceps, Gould in Proc. Zool. Soc, part xxiii. p. 87. 



Barroti, Salvin in Ibis, vol. iii. p. 410. 



■ Barroti, Reichenb. Aufz. der Col. p. 13 ; Id. Troch. Enum. p. 11 ; Cab. et Hein. Mus. Hein. Theil iii. 



p. 28, note. 

 Ornismya Gabriel, Delatt. Echo du Monde Savant, No. 45, Juin 15, 1843, col. 1070. 

 Habitat, Guatemala, Costa Rica, and the forests of New Granada bordering the Pacific coast, as far south as 



Ecuador; Esmeraldas (i^ra^^r). 



242. Heliothrtx violifrons, Gould. 



Heliothrix Barroti . . Vol. IV. PI. 2l7. 



Habitat. Carthagena, or Veragua. 



On receiving this bird from M. Warszewicz, I considered it to be referable to the Heliothrix Barroti, and 

 accordingly figured and described it under that name. Subsequently I received another bird with a differently 

 coloured crown, which, beheving it to be new, I described and figured as H purpureiceps, but I now find that the 

 latter is the true H. Barroti, and that the former is a new bird ; I therefore propose for it the distinctive appellation 

 of H. violifrons. 



Between the genevB. Heliothrix Bjid Petasophora appears to be the proper situation for my genus Schistes ; for to 

 the former it is nearly allied in its wedge-shaped bill, and to the latter in the colouring of the tail. The three 

 species known are all inhabitants of the Andes of New Granada and Ecuador. I have often thought that the white 

 gular mark in Schistes albigularis is characteristic of immaturity ; but this is by no means certain. 



Genus Schistes, Gould, 



(Sx^T^^. findo.) 

 Generic characters. 



Male. — Bill longer than the head, straight, Avedge-shaped at the tip ; wings moderately long and sHghtly 



rounded ; tail rounded, the feathers broad ; tarsi partially clothed ; feet small ; hind toe and nail shorter than the 



middle toe and nail. 



243. ScHTSTES Geoffroyi Vol IV. PI. 218. 



Schistes Geoffroyi, Reichenb. Aufz. der Col. p. 13. 



Petasophora Geoffroyi, Reichenb. Troch. Enum. p. 11. 

 Schistes Geoffroyi, Cab. et Hein. Mus. Hein. Theil p. 27 

 Habitat. The Andes of New Granada. 



