ART. 7 EEVISION OF THE GENUS BASILEUTERUS TODD 89 



Redondo, 1; Monte Aguacate, 1; San Sebastian, 1; Juan Vifias, 

 6; Esparta, 1; Aquinares, 5; Agua Caliente, 1; unspecified, 1. 

 Total, 108. 



Genus IDIOTES Baird 



Idiotes Baird, Rev. Anier. Birds, 1865, p. 247 (diag. ; type, by original 

 designation, Setophaga ruffrans Swainson). 



Gen^eHc cJiaracters. — Similar to Basileuterus Cabanis, but bill rela- 

 tively shorter, and tail relatively longer, exceeding the wing in length, 

 and composed of narrowed rectrices. 



Remarks. — Baird included several other Middle American species 

 in this group be3ides the type, but if restricted to the latter it be- 

 comes possible to recognize it to some advantage, while its elimina- 

 tion from Basileutenis enables a tighter definition for that group. 

 It is, however, closely related to Basileuter-u^ delattHi^ so closely 

 indeed that Mr. Kidgway made its type conspecific with the latter. 

 A^ shown beyond, however, there appears to be no real connection 

 between the two. The single species comprising this group is 

 peculiar to Mexico and Guatemala, where it has become split up 

 into a number of geographical races. 



IDIOTES RUFIFRONS SALVINI (Cherrie) 



Basileuterus delattrii (not of Bonaparte) Sclater, Cat. Amer. Birds, 1861, 



p. 35, excl. syn. (Mexico). — Baird, Rev. Amer. Birds, 1865, p. 249, excl. 



syn. part (Coban, Guatemala; descr. ; crit.). — Salvin and Godman, Biol. 



Gentr.-Amer., Aves, vol. 1, 1881, p. 176, part (Coban and Cahabon, 



Guatemala).— Sharpe, Cat. Birds Brit. Mus., vol. 10, 1885, p. 396, part 



(Coban, Guatemala). 

 Basileuterus rufifrons (not Setophaga rufifrons Swainson) Sharpe, Cat. 



Birds Brit. Mus., vol. 10, 1885, p. 397, part (Coban and Cahabon, 



Guatemala). 

 Basileuterus salviui Cherrie, Proc. U. S. Nat. Mus., vol. 14, 1891, p. 342 



(Coban, Vera Paz, Guatemala; orig. descr.; type in coll. U. S. Nat. 



Mus.). — Salvin and Godman, Ibis, 1892, p. 326, in text (range; crit.). 

 Basileuterus flamgaster Nelson, Auk, vol. 14, 1897, p. 67 (Yajalon, Chiapas, 



Mexico; orig. descr.; type in coll. U. S. Nat. Mus.). 

 Basileuterus rufifrons salvitii Ridgwat, Bull. U. S. Nat. Mus., No. 50, 



vol. 2, 1902, p. 749 (descr.; range; refs.). — Dearborn, Field Mus. Orn. 



Ser., vol. 1, 1907, p. 131, in text (crit.). 

 Basileuterus rufifrons..flavigaster Ridgway, Bull. U. S. Nat. Mus., No. 50, 



vol. 2, 1902, p. 748 (descr.; range; refs. [part]). 



Suhspecifc characters. — Similar to Idiotes rufifrons rufifrons., but 

 with the yellow of the breast more extended posteriorly, often cover- 

 ing the entire under parts, with a buffy wash on the flanks and 

 crissum. 



Measurements. — Male (nine specimens) : Wing, 51-57 (average, 

 54); tail, 53-57 (55); bill, 9-11 (10); tarsus, 20-22 (21). Female 



