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. Hah. Formerly, 

 entire Mississippi Valley, Gulf 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 "Valley and 



Gulf States 382. C. carolinensis (Linn.). Carolina Paroquet. 



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



b 1 . "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\ 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 .55-.65 (.60), tarsus .66-.75 (.71), middle toe .85-1.00 (.91). 

 Hdb. Southern Mexico to Nicaragua. 



C. holochlorus Scl. Green Parakeet. 1 

 c*. 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). Sab. 

 Socorro Island, western Mexico. 



C. holochlorus brevipes Baird. Socorro Parakeet. 2 

 V. 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. Sab. Southern 

 Mexico, and south to Nicaragua. c. aztec Sottaitck. Aztec Parakeet. 8 

 c a . Bill bufly 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 bufly 

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

 Mexico, from Orizaba and Mazatlan south to Costa Eica. 



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



1 Gonurus holochlorus Scl., Ann. Mag. N. H. 1859, 224. 



' Conurue holochlorus Tar. brevipes Baird, Ann. Lye. N. Y. 1871, 14. 



3 Gonurus aztec SouANCis, Iter, et Mag. Zool. 1857, 97. 



4 Sittace petzii Waol., Mon. Paitt. 1832, 650. Gonurus petzii Gray, Gen. B. ii. 1845, 413, sp. 13. 



