ii4 FIELD MUSEUM OF NATURAL HISTORY ZOOLOGY, VOL. XIII. 



*Momotus mexicanus Swainson. MEXICAN MOTMOT. 



Momotus mexicanus SWAINSON, Philos. Mag., 1827, p. 442 (Temiscalteptic, 

 Mexico); SHARPE, Cat. Bds. Brit. Mus., XVII, 1892, p. 328, part. 



Momotus mexicanus mexicanus RIDGWAY, Bull. U. S. Nat. Mus., No. 50, VI, 

 1914, p. 463. 



Range: Middle Mexico. 



8: Mexico (Jalisco, San Geronomo). 



*Momotus mexicanus saturates Nelson. COAST MOTMOT. 



Momotus mexicanus saturatus NELSON, Auk, 1897, p. 49 (Tehauntepic, Oaxaca, 

 Mexico); RIDGWAY, Bull. U. S. Nat. Mus., No. 50, VI, 1914, p. 465. 



Range: Southwestern Mexico. 

 fio: Mexico (Guerrero). 



*Momotus castaneiceps Gould. CHESTNUT-HEADED MOTMOT. 



Momotus castaneiceps GOULD, Proc. Zool. Soc. Lond., 1854, P- I 54 (Guatemala); 

 RIDGWAY, Bull. U. S. Nat; Mus., No. 50, VI, 1914, p. 466; SHARPE, Cat. Bds. 

 Brit. Mus., XVII, 1892, p. 329. 



Range: Guatemala. 

 4: Guatemala. 



Genus BARYPTHENGUS Cabanis & Heine. 



Barypthengus Cabanis and Heine, Mus. Hein., II, 1859, p. 114 (Type Baryphonus 

 ruficapillus Vieill.). 



*Baryphthengus ruficapillus ( Vieill.) . RUFOUS-HEADED MOTMOT. 



Baryphonus ruficapillus VIEILLOT, N. Diet. d'Hist. Nat., XXI, 1818, p. 315; 



Id., Gal. des Ois., II, 1825, p. 319, pi. 190 (" Peru " = Brazil). 

 Barypthengus ruficapillus SHARPE, Cat. Bds. Brit. Mus., XVII, 1892, p. 330; 



CHUBB, Ibis, 1910, p. 265 (Paraguay). 



Range: Brazil and Paraguay, and N. E. Argentine. 

 i: "Brazil." 



Genus ASPATHA Sharpe. 



Aspatha Sharpe, Cat. Bds. Brit. Mus., XVII, 1892, p. 331 (Type Prionites gularis 

 Lafresnaye). 



Aspatha gularis (Lafresnaye). BLUE-THROATED MOTMOT. 



Prionites gularis LAFRESNAYE, Rev. Zool., Ill, 1840, p. 130 (Guatemala). 

 Aspatha gularis SHARPE, Cat. Bds. Brit. Mus., XVII, 1892, p. 331; RIDGWAY, 

 Bull. U. S. Nat. Mus., No. 50, VI, 1914, p. 483. 



Range: Guatemala to southern Mexico (Chiapas). 



