MYI0BIU8. 57 



more abundant in the State of Panama, whence specimens have been sent us from 

 various places. 



Wherever it occurs in Central America the allied M. sulphureipygius occurs with it, 

 the two species living independently in the same words. M. harbatus, however, has a 

 much wider southern range, whilst M. sulphur evpygius is found further northwards 

 nearly to the extreme limits of the hot tropical forests of Eastern Mexico. 



2. Myiobius sulphureipygius. 



Tyrannula mlphureipygia, Scl. P. Z. S. 1856, p. 296 '. 



Myiobius sulphureipygius, Scl. P. Z. S. 1859, p. 384^; Ibis, 1873, p. 373'; Cat. Birds Brit. Mus. 



xiv. p. 200*; Scl. & Salv. Ibis, 1860, p. 399 = ; Cassin, Proc. Ac. Phil. 1860, p. 144^ Lawr. 



Ann. Lye. N. Y. viii. p. 8', ix. p. 114^ Salv. P.Z.S. 1867, p. 148', 1870, p. 198"; 



Sumichrast, Mem. Bost. Soc. N. H. i. p. 557"; v. Prantz. J. f. Orn. 1869, p. 308"; 



Nutting & Ridgw. Pr. U. S. Nat. Mus. vi. p. 402 ". 

 Myiobius citrinopygius, Cab. & Heine, Mus. Hein. ii. p. 67 ". 

 Myiobius mexicanus, Licht. Mus. Berol. (fide Cabanis ") . 



Prtecedenti similis, sed pectore et hypochondriis ferrugineo lavatis. (Desor. maris ex Eio de la Pasion. Mus. 

 nostr.) 



Hah. Mexico is, state of Vera Cfuz {Sumichrast "), Cordova {SalU i), Playa Vicente 

 {Soucard^), Valle Real {Beppe), Cozumel I. {G. F. Gaumer); British Hondu- 

 EAS, Cayo {BlancaneaiLx) ; Guatemala, Eio de la Pasion, Choctum ^ [0. S. & 

 F. B. G.) ; Nicaragua, Chontales {Belt ^), Los Sabalos {Nutting i3) ; Costa Eica, 

 Angostura {Carmiol ^), Tucurriqui {Arce), La Palma {Nutting) ; Panama, Chiriqui i", 

 Bugaba lo, Calovevora, Calobre 1°, Santa Fe ^ {Arce), Panama Eailway {M' Lean- 

 nan''), Truando {Wood^). 



The first specimens of this species sent to Europe were probably those obtained by 

 Deppe at Valle Eeal in Mexico, which remained undescribed under Lichtenstein's MS. 

 name, M. meocicanus, in the Berlin Museum. In 1856 Mr. Sclater received examples 

 from M. Salle which he named M. sulphureipygixis, comparing the species with the allied 

 M. barhatus. The range of this bird in Mexico appears to be extremely limited, 

 and probably strictly confined to the hot low-lying forests of the State of Vera Cruz. 

 It also occurs on the island of Cozumel, whence Mr. Gaumer sent us a single specimen. 

 It is found too in British Honduras and in some abundance in Northern Vera Paz in 

 the heavily forested country, lying at an elevation of about 1600 feet above the sea. 

 We are not aware that it inhabits the forests bordering the Pacific Ocean on the 

 western side of the cordillera, or indeed in any part of the west coast until we come to 

 Costa Eica and the State of Panama. In these last-named countries it occurs together 

 with M. harbatus, but not beyond the Isthmus of Darien, which appears to be the 

 extreme limit of its range in this direction. 



M. sulphureipygius inhabits the dense forest, living amongst the lower branches of 

 the forest trees. Its nest and eggs are unknown. 



BIOL. CENTK.-AMEE., Aves, Vol. II., February 1889. 8 



