190 



Bangs — Descriptions of New American Birds. 



Remarks. — This new form of the vermilion tyrant-bird occupies Yuca- 

 tan, British Honduras and parts of Guatemala. The specimens which I 

 have examined are conspicuously different from the more northern race. 

 Its characters were fully pointed out by Ridgway in Birds of North and 

 Middle America, but it was not given a name by that distinguished orni- 

 thologist. 



Leistes superciliaris petilus subsp. nov. 



Type from Concepcion del Uruguay, adult d\ no. 31,023, Mus. Comp. 

 Zool. Collected November 27, 1880, by W. B. Barrows. 



Characters. — Similar to true L. superciliaris Bp. of Brazil in color, but 

 decidedly smaller, with a shorter bill, wing in adult c? about 98 (in adult 

 c? of L. superciliaris superciliaris about 105) ; culmen in adult cf about 

 19.5 (in adult (J 1 of L. superciliaris superciliaris about 22.5). 



Measurements. — 



Remarks. — I would also suggest the necessity of subdividing Leistes 

 militaris (Linn.) and recognizing Leistes militaris militaris (Linn.), 

 Guiana and eastern Peru north to Panama, smaller, with a shorter bill, 

 wing in adult c? about 93, culmen about 20, and L,eistes militaris enjtli- 

 rothorax Pelzeln, Lower Amazon Valley, larger, with a longer bill, wing 

 in adult c? about 100, culmen about 22.5. 



