194 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult male. — Above dull (somewhat grayish) parrot green or grass 

 green, becoming more yellowish green (apple green) on forehead; 

 whole rump (including lower back), greater wing-coverts, under 

 wing-coverts, and axillars bright cerulean blue; secondaries (except 

 proximal ones or tertials) and proximal primxaries darker and duller 

 blue, edged with cerulean blue; loral, suborbital, and malar regions 

 bright yellowish green (clear apple green); under parts dull light 

 bluish green (malachite green), passing into bright paris green on 

 under tail-coverts, which are pale yellow or yellowish white basally; 

 under primary-coverts and under surface of remiges dull glaucous- 

 green, the primaries with a broad stripe of dusky next to shaft; biU 

 dull whitish terminally, dusky basally; legs and feet dusky brownish 

 (in dried skins); length (skins), 134-138(137); wing, 88.5-93(91.1); 

 tail, 42-44.5(43.4); culmen, 13-14(13.7); tarsus, 12.5-13.5(13); outer 

 anterior toe, 13.5-14.5(13.8).'^ 



Adult female. — Above light parrot green, becoming much brighter 

 green on rump and upper tail-coverts ; sides of head and under parts 

 (including under wing-coverts and axillars) much lighter green (less 

 yellowish than apple green) passing into bright paris green posteriorly; 

 otherwise as in adult male; length (skins), 136-145 (141); wing, 

 88.5-91.5 (90.2); tail, 43.5-46 (44.8); culmen, 13.5-14 (13.8); 

 tarsus, 13-13.5 (13.2); outer anterior toe, 13.5-14.5 (13.8).'' 



Tres Marias Islands, northwestern Mexico. 



Psittacula ajanopygia (not of Soiianc^) Finsch, Abh. nat. Ver. Bremen, ii, Heftiii, 

 1871, 353 (Tres Marias Islands).— Grayson, Proc. Bost. Soc. N. H., xiv, 1871, 

 270, 271 (Tres Marias).— Salvin, Ibis, 1873, 353, in text (Tres Marias).— 

 Salvadori, Cat. Birds Brit. Mus., xx, 1891, 249, part (Tres Marias). — Salvin 

 and GoDMAN, Biol. Centr.-Am., Aves, ii, 1897, 581, part (Tres Marias). 



Psittacula cyanopyga Salvin, Ibis, 1871, 100 (Tres Marias). — Lawrence, Mem. 

 Bost. Soc. N. H., ii, 1874, 297, part (Tres Marias). 



Psittacula insularis Ridgway, Proc. U. S. Nat. Mus., x, eig. 34, Aug. 6, 1888, 534, 

 641 (Tres Marias Islands, off n. w. Mexico; coll. U. S. Nat. Mus.). — Nelson, 

 N. Am. Fauna, no. 14, 1899, 41 (Tres Marias; habits; crit.).' — Salvadori, 

 Ibis, 1906, 464 (Synonymy; crit.). 



Plsittacula] insularis Sclater, Ibis, 1889, 128, in text (crit.). 



Ps{ittacula\ insularis Hartlaxjb, Journ. fiir Om., 1889, 113, in text (Tres Marias). 



[Psittacula] insularis Sharpe, Hand-list, ii, 1900, 19. 



PSITTACULA SPENGELI Hartlaub. 



SPENGEL'S PARROTLET. 



Adult male. — Above light yellowish green (apple green), paler and 

 tinged with grayish on hindneck, brightening into vivid yellowish 

 green oia forehead and sides of head; entire rump, including lower 

 back, and greater wing-coverts, exquisite nile blue or pale turquoise 

 blue; innermost primary coverts dark blue, the outer ones deep 

 green; distal secondaries bluish green passing into greenish blue 



o Six specimens & Three specimens. 



