BANGS AND PENARD: NOTES ON AMERICAN BIRDS. 381 



constant and may 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. Ttrannus melancholicus occidentalis Hartert and Goodson. 



Tyrannus melanc}ioUcii.s occidentalis Hartert and Goodson, Xov. zool., 1917, 

 24, p. 412 (San Bias, Tepic, W. Mexico). Type. — Tring Museum (?). 



SuBSPECiFic CHARACTERS. — Similar, to Tyrannus melancholicwi chloronotus 

 Berlepsch, 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 dbtinguish it at once from its nearest allies, 

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



5. Tyrannus mel.^cholicus coucmi Baird. 



Tyrannm coiichii Baird, Rept. Pacific R. R. surv^ey, 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 

 cMi)ronotus Berlepsch, 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. 



Specimens examined. — Mexico: Tamaulipas, 6; Sierra Madre, 1 ; 

 Jalapa (trade skin), 1 ; Orizaba, 1. Texas: LomitaRanch, 3; Bro'wns- 

 ville, 1. Total, 13. 



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



