250 



REVIEW OF AMERICAN BIRDS. 



[part I. 



be delattrii, are 011% varieties of rufifrons ; and I am now un- 

 acquainted with any Mexican examples of the species, although 

 quoted by Dr. Sclater as from Orizaba. • 



Smlth- 



soniaa 



No. 



Collec- 

 tor's 

 No. 



Sex 

 and 

 Age. 



ijocality 



Coban, Vera Paz, 

 [Ouat. 



Whea 

 Collected. 



Nov. 15, '59. 



Received from 



Collected by 



Basileuterus mesoclirysus. 



Basileuterus mesochrysus, Sclatek, P. Z. S. 1860, 251 (Bogota). 

 Basileuterus delattrii, Sclater, P. Z. S. 1855, 144 (Bogota). — Cab. Jour. 



1860,325 (Costa Rica).— JLawkence, Ann. N. Y. Lye. 1861,322 



(Panama). 



Hah. Bogota, to Costa Eica ? 



(No. 30,491.) General characters of B. delattrii, but the wings much longer 

 and more pointed, nearly equal to the entire tail, which is shorter and less 

 rounded ; the 1st quill rather longer than the secondaries. There is no 

 appreciable white in the chin ; that on the side of the lower jaw is scarcely 

 apparent, and does not extend below the chestnut cheeks. The brown of the 

 crown does not extend so far back on the head, and hence not behind the 

 ears. The upper parts are of a purer olive ; beneath of a clearer yellow, the 

 crissum being unicolor with the belly. The quills and tail feathers are darker. 



Total length, 4.85; wing, 2.28; tail, 2.50; graduation, .24; diflference be- 

 tween 1st and 4th quills, .24 ; length of bill from nostril, .30 ; along gape, .55 ; 

 tarsus, .85. 



It is possible that a larger series of typical B. delattrii may show 

 that the differences mentioned above are not characteristic, and that 

 the Costa Ricau specimens actually belong to delattrii, I think, how- 

 ever, they are really different. 



(29,853.) Labelled "B. delMrii." 



Basileuterus lielli. 



Muscicapa belli, Gikaud, Birds Texas, 1841, pi. iv, fig. l.—]3as,}euterus. 

 belli, Sclatek, P. Z. S. 1855, 65; 1859, 374 (Oaxaca).— Ib. Catal. 

 Am. Birds, 1861, 35, no. 213 (Orizaba).— Sclater & Salvih, Ibis, 

 II, 1860, 31 (Guatemala). 



