ORTALIS. 209 



tail-coverts; length 19.75-24.00, wing 7.50-8.50, tail 

 9.00-10.50. Nest in trees or bushes, usually 4-10 feet 

 from ground, carelessly constructed of sticks, grasses, 

 leaves, etc. Eggs usually 3, 2.34 X 1-60, creamy white, 

 with very hard, distinctly granulated shells. Hab. 

 Northeastern Mexico, from Vera Cruz north to lower 

 Bio Grande Yalley (both sides). 



311. O. vetula maccalli (BAIED). Chachalaca. 1 



e 2 . Tip of tail dull buffy brown, or isabella-color ; colors generally 



darker than in maccalli, and -size decidedly less (length 



about 21.00, wing 7.70, tail 9.00). Hab. Guatemala and 



southern Mexico (Isthmus of Tehuantepec). 



O. vetula plumbeiceps GRAY. Guatemalan Chachalaca. 2 

 d\ Belly dull whitish. 



Tip of tail brownish white; otherwise like maccalli, but 

 smaller (size of plumbeiceps). Hab. Yucatan. 



O. vetula pallidiventris RIDGW. (subsp. nov.). 

 Yucatan Chachalaca. 



c 1 . Wing 9.00, or more ; feathers of neck distinctly lanceolate ; under tail- 

 coverts deep ochraceous, tip of tail pale ochraceous. 



A O. poliocephala WAGL. Gray-necked Chachalaca. 3 



6 2 . Quills chestnut. 



Otherwise very similar to 0. plumbeiceps, but much browner above. 



O. cinereiceps GRAY. Costa Rican Chachalaca.* 



1 It is possible that this may be the true 0. vetula of WAGLER (Penelope vetula WAGL., Isis, 1830, 1112), 

 which seems to agree exactly in color with 0. maccalli ; but the size is much, smaller, the length being given 

 as 18 inches, the tail 9.70. The locality is given as simply " Mexico," and it may be that a fourth local race, to 

 which Wagler's name is strictly applicable, may exist in some portion of Mexico specimens from which have 

 not come under my observation. 



2 Ortalida plumbeiceps GRAY, List Gallin. Brit. Mus. 1867, 11. 



8 Penelope poliocephala WAGL., Isis, 1830, 1112. Ortalida poliocephala WAGL., Isis, 1832, 1227. 

 4 Ortalida cinereiceps GRAY, List Gallin. Brit. Mus. 1867, 12. 



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