ORDER PASSERES. 251 
596. Habia melanocephala (Swains.). 
Black-headed Grosbeak. 
Guiraca melanocephala Swains. Philos. Mag. I. 1827, 438. 
Habia melanocephala STEN. Auk, I. Oct. 1884, 367. 
[B 381, C 194, R 245, C 290.] 
Geroc. Dist.— Western United States, from middle Kansas to the 
Pacific coast, north to British Columbia and Montana, and south in 
Mexico to Oaxaca and the Cape region of Lower California. 
Genus GUIRACA Swainson. 
Guiraca Swans. Zool. Jour. III. Nov. 1827, 350. Type, Zoxia 
cerulea LINN. 
597. Guiraca czerulea (LINN.). 
Blue Grosbeak. 
Loxia cerulea Linn. S. N. ed. 10, I. 1758, 175- 
Guiraca cerulea Swatns. Phil. Mag. I. 1827, 438. 
[B 382, C 195, R 246, C 291.] 
Geroc. Dist.— Eastern United States, from southern New Jersey, 
southern Illinois and central Nebraska, south to Cuba and Mexico. 
Casual northward to New England. 
597a. Guiraca czrulea eurhyncha CouvEs. 
Western Blue Grosbeak. 
Guiraca cerulea, var. eurhyncha Coves, Am. Nat. VIII. Sept. 
1874, 563. 
[B 382, part, C 195, part, R 246, part, C 291, part.] 
Geroc. Dist.— Southwestern United States, from South Dakota, 
Colorado, southern Utah, southern Nevada and California to Lower 
California and southern Mexico. 
Genus PASSERINA VIEILLoT. 
Passerina ViEttu. Analyse, 1816, 30. Type, by elimination, 
Tanagra cyanea LINN. 
