PROCEEDINGS OF UXITED STATES NATIONAL MUSEUM. 13 



4. SIALIA STALIS GUATEMAL.^.* 



Ch. — Similar to 8. sialis of the eastern Uuited States, but with de- 

 cidedly longer wing and tail, the cinnamon of breast, etc., paler; 9 

 with the back decidedly bluish. 



(? adult : Above uniform rich cobalt blue (exactly as in S. sialis), the 

 sbafts of the rectrices and remiges deep black, and the ends of the 

 primaries dusky black. Chin, throat, breast, sides, and flanks, pale 

 cinnamon ; abdomen white ; anal region and lower tail-coverts white, 

 the latter tinged with blue, and with dusky shafts. Bill and feet deep 

 black ; iris brown. Wing 4.15-4.40, tail 2.80-3.00, culmen .50, tarsus 

 .80-.S5, middle toe .G2-.65. 



9 adult : xlbove dull grayish blue, more brownish across the nape ; 

 feathers of i)ileum and back with blackish shaft-streaks (obsolete in 

 winter plumage) ; rump, upper tail-coverts, and tail, bright blue, lighter 

 and more greenish than in the <?; wings dull blue; throat, jugulum, 

 breast, sides, and flanks, pale dull cinnamon; abdomen, anal region, 

 and crissam, white. Bill, tarsi, and toes, black; iris, brown. Wing 

 4.00-4.10, tail 2.70-2.80. 



Hab. — Highlands of Guatemala and Honduras. 



A considerable series of specimens of Guatemalan Bluebirds are 

 quite uniform in their characters, as described above. It is somewhat 

 strange that this extreme southern form should resemble much more 

 closely in colors the true >S'. sialis of the eastern United States than the 

 »S'. azurea of eastern Mexico, but such is nevertheless the case. Speci- 

 mens in the National Museum collection are from central Guatemala 

 ("Cobaa to Clusec"), and Vera Paz (Tactic and Cobau). I have not 

 seen a specimen from Honduras, but the birds of that country are prob- 

 ably identical with those from Guatemala. 



5. CHAMPA FASCIATA HENSHAWI. 



Cn. — Dilfering from C. fasciata of the coast district of California in 

 very much paler and grayer colors. Above brownish gray, becoming 

 decidedly ashy on sides of head and neck, the tail showing very indis- 

 tinct narrow transverse bars of a darker shade (quite obsolete in some 

 specimens). Beneath pale vinaceous-buft", more or less tinged with 

 pale ashy, especially on the sides. Wing 2.20-2.50, tail 3.20-3.70, cul- 

 men .40-.45, tarsus .95-1.05. 



* Si ALIA SIALIS GUATEMALA, EidgW.,MS. 



" Sialia wUsoni" ScL. & Salv. Ibis, 1859, 8, (highlands of Guatemala; "El Azu- 

 lejo"); Nom. Neotr. 1873, 4 (part).— Salvin, Ibis, 1860, 29 (Coban and Due- 

 iias; resident). — Taylor, Ibis, 1860, 15, 110 (highlands of Honduras, pine 

 region, alt. 5,000 ft.). — Owen, Ibis, 1861, 60 (Guatemala; descr. nest and 

 eggs).— ScL. Cat, Am. B. 1862, 10 (part). 



" Sialia sialis" Salv. & Godji. Biol. Centr. Am. Aves, i, 1879, 45 (part). 



'^ SiaJia azurea" Baird, Review, 1864, 62 (part).- Seebohm, Cat. B. Brit. Mas, 

 V, 1881, 331 (Guatemala). 



