BANGS wi> PENARD: NOTES OK tMBRIOAN BIRDS. 381 



constanl and mav be found in some specimens from Panama and else- 

 where. 



There is a perceptible increase in size of the specimens of this form, 

 northward as it approaches the range of T, m. couchii. 



4. Tykanms MELANCHOLICUS occidi.m a lis Hartert and Goodson. 



Tyrannus meUmchoUcua occtdentalis Hartert and Goodson, Nov. zool., 1 'H 7, 



24, p. 112 San Bias, Tepic, W. Mexico). Type. — Tring Museum (?). 



SiMtsiMX'iFie en aracters.— • Similar to Tyrannus melancholicus chloronotus 

 Beriepsch, but smaller; belly paler yellow than in any other form; throat 

 even clearer white than in T. m. chloronotus; tail less deeply forked. 



Measurements. — Adult (seven specimens) — wing, 109.5-116.0 

 (112.4); tail, 85.0-92.5 (89.5). 



Range. — Western Mexico. 



Specimens examined. — Mexico: Ocotlan, 1; Manzanello, 1; 

 San Bias, 3; Tres Marias Islands, 2; Rosario, 1. Total, 8. 



Remarks. — This is a very well-marked form. Its pale under parts 

 and clear white throat distinguish it at once from its nearest allies, 

 T. m. chloronotus and T. m. couchii. 



5. Tyrannus melancholicus couchii Baird. 



Tyrannus couchii Baird, Rept. Pacific R. R. survey, 1858, 9, p. 175 (Nuevo 



Leon, Mexico). Type. — U. S. N. M. 

 Laphyctes satrapa Cabanis and Heine, Mus. Hein., 1859, 2, p. 77 (Mexico). 



Type. — Berlin Museum. 



Subspecific characters. — Similar in coloration to Tyrannus melancholicus 

 chloronotus Beriepsch, but much larger; larger also than Tyrannus melan- 

 cholicus melancholicus Vieillot; chest-band not so dark, throat whiter, and 

 head paler gray. 



Measurements. — Adult (twelve specimens) — wing, 116.0-125.5 

 (122.1); tail, 93.5-104.5 (98.8). 



Range. — Northeastern Mexico, southern Texas. 



Spec i mkns examined. — Mexico: Tamaulipas, 6; Sierra Madre, 1; 

 Jalapa (trade skin), 1; Orizaba, 1. Texas: Lomita Ranch, 3; Browns- 

 ville, 1. Total, 13. 



Remarks. — This is the largest of the forms of T. melancholicus. 



