250 



REVIEW OF AMERICAN BIRDS. 



[part I. 



1)0 delattrii, are only varieties of rujifrons ; and I am now un- 

 acquainted with any Mexican examples of the species, although 

 quoted by Dr. Sclater as from Orizaba. 



Basileiiteriis mesoclirysiis. 



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

 Basileutcrus delattrii, Sclatek, P. Z. S. 1855, 144 (Bogota). — Cab. Jour. 

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

 (Panama). 

 Hab. Bogota, to Costa Rica ? 



(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; difference 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 difterenccs mentioned above are not characteristic, and that 

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

 ever, they are really different. 



When 



Collected. 



Received from 



Collected by 



Sau Jose, Costa Kica. 



Jan. 12, '62. 



Dr. V. Fi-autzius. 

 J. Curmiol. 



I3erlin Museum. 

 Cab. of Lawrence. 



(29,553.) Labelled "i>". delattrii." 



Basileuterus belli. 



Muscicapa belli, Giraud, Birds Texas, 1841, pi. iv, fig. 1. — Basileuterris 

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

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

 II, 1860, 31 (Guatemala). 



