2i8 Lloyd's natural history. 



Tail composed of twelve feathers. 



First primary flight-feather 7niich the shortest^ about half the 

 length of the fifth, which is equal to the tenth ; seventh slightly 

 the longest. 



Leg (metatarsus) slightly longer than the middle toe and 

 claw. 



Sexes similar in plumage. 



Only one species is known. 



I. THE earl of derby's iMOUNTAIN-PHEASANT. OREOPHASIS 



DERBIANUS. 



Oreophasis derbia?ius, Gray, Gen. B. iii. p. 485, pi. cxxi. (1844) ■> 

 Sclater and Salvin, Ibis, 1859, p. 224; Ogilvie-Grant, Cat. 

 B. Brit. Mus. xxii. p. 489 (1893). 



Penelope frofiticornis, Van der Hoev. Handb. der Zool. ii. p. 

 435 (1852-56). 



Adult Male and Female. — General colour above black, glossed 

 with dark green ; base of upper mandible, forehead, and sides 

 of the head velvety black ; base of throat nearly naked ; chest 

 and breast white, with dark shaft stripes ; sides mostly buff, 

 with dark centres to the feathers ; a wide white band across 

 the middle of the tail. Helmet (thinly covered with hair-like 

 feathers), legs, and feet, deep vermilion ; bill, pale straw-colour ; 

 iris, white. 



Male: Total length, 36 inches; wing, i5"5; tail, i5'2; 

 tarsus, 3"6; middle toe and claw, 3'4. 



Female: Somewhat smaller; wing, i4'8 inches. 



Eange. — Central America ; woods of the Volcan de Fuego, 

 Guatemala. 



Habits. — This fine bird, one of the most interesting to be met 

 with in Central America, still remains one of the rarest prizes, 

 and, so far as I am aware, is only to be found on the Volcan 



