LOPHORNIS. — DISCOSFRA. 427 



tail-feathers dnslvy with pale Ijiiff tips ; fliglit-rjaills the same as 

 in the male; a black spot immediately in front of the e3"e; lores, 

 cheeks, and chin pale rufous ; throat dusky broAvn with buffy- 

 Avhite tips to the feathers ; sides of the body green ; middle of 

 abdomen more or less grey; under tail-coverts green narrowly 

 margined with rufous. Wing 37 mm. 



The female described was collected by Whitely at Mount 

 Roraima, 3000 feet, on July 3rd, 1883 — Salvin-Godman collection. 



The young male is very similar to the adult female, but differs 

 in having the chin and throat almost entirely rufous. 



Immature male. Differs from the adult male in having the head 

 dusky, a dark green patch on the middle of the throat, and the 

 chin and cheeks streaked with white. 



The two immature birds were also collected by Whitely at Mount 

 Roraima, 3000 feet, in July 1883 — Salvin-Godman collection. 



Breeding-season. Unknown . 



Nest. Unrecorded. 



E[igs. Undescribed. 



Range. Confined to British Guiana : Bartica {McConnell coL 

 lection) ; Merume Mountains, Mount Roraima ( WJtiteli/). 



Genus DISCOSURA Bonap. 



Discosura Bonaparte, Compt. Rend. Paris, xxx. p. 3S2, April 1850. 

 Type D. Jongicauda (Gmel.). 



In this genus the tail is deeply forked, the outer feather on 

 each side much extended with a spatule at the tip of each. 



290. Discosura longicauda. 



Racket-tail. 



TrocJn'his lo7igicauda Gmel. Sy.'^t. Nat. i. p. 498, 1788 (Cayenne). 

 Trochilus ])Iafi(riis Cab. in Scliomb. Keis. Guian. iii. p. 700, 1818. 

 Discurn sp. inc., Salvin, Ibis, 1885, \). 431 (K. Atapurau). 

 Uiscura longicauda Salvin, Cat. B. Brit. Mus xvi. p. 431, 1892 



(Cariniang River). 

 Discosura lonr/icauda Brabourne & Chubb, B. S. Amer. i. p. 148, 



no. 1449, 1912. 



Adult male. General colour al)Ove dark green, with a line of 

 wliite across the lower back, tail-feathers l)rown with white shafts, 

 the two outer feathers extended beyond the others, and having a 

 .ijHitnle at tbe tips; crown of head, throat, and breast bright grass- 

 green, the feathers on the lower breast white at the base with 

 a green disc at the tip ; abdomen dusky Inown with gold spots ; 



