2l8 ALLEN S NATURALLSTS LIBRARY. 



Tail composed of twelve feathers. 



First primary flight-feather much 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 MOUNTATN-PHEASANT. OREOPHASLS 

 DERBIANUS. 



Oreophasis derhimius. 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 front iconn's, A'an 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, 15-5; tail, 15-2; 

 tarsus, 3-6; middle toe and claw, 3*4. 



Female: Somewhat smaller ; wing, 14-8 inches. 



Range. — Central America ; woods of the ^^olcan 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, 

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



