BIRDS — PENELOPIDAK — ORTALIDA M'CALLl. 



611 



Ccmparatwe measurements of species. 



ORTALIDA McCALLI, Baird. 



Chiacalacca. 



Ortalida vetula, Lawrence, Ann. N. Y. Lye. V, 1851, 116. (Not Penelope vetula, Wagler, Isis, 1830, 1112, and 



1831, 517.) 

 Ortalida poliocephala , C as sin, Illust. I, ix, 1855,267 ; pi. xliv. (Not Penelo])e poliocephala, Wagleu, Isis, 1830, 1112.) 



Sp. Ch. — Body above dark greenish olive ; beneath brownish yellow, tinged with olive. Head and upper part of neek 

 plumbeous. Tail feathers lustrous green, all tipped with white, except the middle one. Feathers along the middle of the 

 throat black ; outer edge of primaries tinged with gray. Eyes brown. Bill and feet lead colored. Length, 23.50 ; wing, 8.50 ; 

 tail, 11. 



The till of tlii.s species is ratlier long and considerably decurved anterior to the nasal groove ; 

 the commissure curved almost as much as the culmen. The tarsus is about equal to the middle 

 toe ; the anterior half covered by a series of large transverse scutellae, with another series on 

 each side meeting behind in a sharp ridge, except superiorly. These lateral series are separated 

 from the anterior by a narrow strip of skin. The outer toe is rather longer than the inner ; the 

 claw falling considerably short of the middle claw. Hind toe without its claw about one-third 

 the middle toe and claw ; it is situated on the same level with the others. 



The feathers of the head are lengthened and pointed, producing a decided full crest. The 

 side of the head is naked to behind the eyes ; the chin is naked, with rather more than the 

 central third longitudinally covered by black feathers, with stiffened shafts and» abbreviated 

 vanes. The tail is longer than the wings, broad and graduated ; the lateral feather about 

 three-fourths the middle. The secondary quills are long and broad, fully as long as the 

 primaries. The wing is concave and much graduated ; the first and second quills much shorter 

 than the secondaries. 



I feel considerable uncertainty as to the specific name of the subject of the present article. 

 The 0. vetula^ is said to be olivaceous ; the head and ears slaty gray ; the flanks, crissum, and 

 tibia, brownish ; the epigastrium and belly somewhat rufous ; the tail feathers above bronze 

 green, with white tips. The length, 18 inches ; longest tail feathers, 9.17 ; the shortest, 6.50. 

 The adult 0. poliocephala- is olive gray ; the head and upper part of neck slate color ; the 

 epigastrium, middle of belly, and tibia, white ; the flanks and crissum fulvous ; the tail 

 feathers bronzed black, tipped with fulvous. The young has the head and occiput slate gray ; 

 epigastrium, belly, and tibia brownish rufous ; the tail like the adult, (tipped with fulvous.) 

 Length, 23 inches ; tail, 11 inches. 



The specimen before me agrees with neither species as described by Wagler. It is most liko 

 the young of 0. poliocephala as to size and general color, but the tail is tipped with white in all 



' Pmtlope vetula, Wagler, Isis, 1830, 1112, No. 14. Me.xico. 



' Penelope poliocephala, Wagler, Isis. 1830, 1112, No. 15, Mexico. 



