270 NORTH AMERICAN BIRDS. 



of quills yellowish green or greenish yellow ; rest of quills dark bluish ; 

 lower parts clear light yellowish green ; edge of wing and thighs tinged 

 with orange. Immature : Similar to adult, but head and neck entirely 

 green, except forehead and lores, which are dull orange-red. Young 

 (first plumage') : Similar to preceding, but with little if any orange on 

 forehead or lores. Length 11.35-14.00, wing 7.00-7.60, tail 6.40-7.10. 

 Nest in hole of large tree (usually cypress or sycamore). Eggs 1.39 X 

 1.07, ovate, short ovate, or rounded ovate, pure white. Hab. Formerly, 

 entire Mississippi Yalley, G-ulf States, and southern Atlantic States, north 

 (casually ?) to Michigan, Maryland, or even to Albany, New York, regu- 

 larly to Ohio, Indiana, Illinois, Nebraska, etc., west to eastern Colorado 

 and Texas; now nearly exterminated, and existing only in compara- 

 tively restricted and isolated localities in lower Mississippi Yalley and 



Gulf States 382. C. carolinensis (!/INN.). Carolina Paroquet. 



a 2 . Cere partly naked, the nostrils exposed ; culmen flattened. 



b\ Wing 6.50, or more ; quills and secondaries green. (Color uniform grass- 

 green, including quills, paler on lower parts ; under surface of quills and 

 tail-feathers yellowish olive.) 



c 1 . Eather smaller, with weaker bill, relatively larger feet, and more yel- 

 lowish green lower parts ; wing 6.70-7.00 (6.87), tail 5.40-6.30 (5.96), 

 culmen 1.00-1.10 (1.03), depth of upper mandible at base .50-.60 

 (.55), width .S5-.65 (.60), tarsus .66-.7S (.71), middle toe .85-1.00 (.91). 

 Sab. Southern Mexico to Nicaragua. 



C. holochlorus SCL. Green Parakeet. 1 



c 2 . Eather larger, with stouter bill, relatively weaker feet, and more deeply 

 green lower parts ; wing 6.50-6.70 (6.59), tail 6.10-6.50 (6.29), culmen 

 1,00-1.12 (1.07), depth of upper mandible at base .57-.61 (.59), width 

 .61-.65 (.63), tarsus .70-.72 (.70), middle toe .85-89 (.86). Hab. 

 Socorro Island, western Mexico. 



C. holochlorus brevipes BAIRD. Socorro Parakeet. 2 

 b*. Wing 5.50, or less ; quills and secondaries partly blue. 



c 1 . Bill horn-colored, the ends of both mandibles whitish; throat and chest 

 dull olive or olive-brownish ; belly dull yellowish olive or olive-yel- 

 lowish, in contrast with bright green of sides and flanks ; top of 

 head entirely green ; wing 5.00-5.40, tail 4.60-5.10. Hab. Southern 

 Mexico, and south to Nicaragua. C. aztec SOTJANCE. Aztec Parakeet. 3 

 c 2 . Bill buffy whitish (sides of lower mandible horn-colored in young) ; 

 throat and chest yellowish olive ; belly clear yellowish green, like 

 sides and flanks ; top of head dull verditer-blue, the forehead huffy 

 orange in adult; wing 5.10-5.50, tail 4.20-4.80. Hab. Southern 

 Mexico, from Orizaba and Mazatlan south to Costa Eica. 



C. petzii (WAGL.). Petz's Parakeet.* 



1 Conurua holochlorus SCL., Ann. Mag. N. H. 1859, 224. 



2 Conurus holochlorus var. brevipes BAIRD, Ann. Lye. N. Y. 1871, 14. 

 8 Conurus aztec SouANcfi, Rev. et Mag. Zool. 1857, 97. 



4 Sittace petzii WAGL., Mon. Psitt. 1832, 650. Conurus pelzii GRAT, Gen. B. ii. 1845, 413, sp. 13. 



