FAMILY TYRANNIDAE 52/ 



of range for this species. The accession papers state that the specimen 

 was received from Thomas Rhodes (not Rhoades) with correspon- 

 dence dated February 20, 1866, and the information that skins 

 "marked S. & T. R. were collected by my brother and myself during 

 the month of Dec. last within six miles of Panama. The rest we 

 bought of a Mr. McClellan [i.e., McLeannan] of Lion Hill near 

 Aspinwall. It was our intention to have remained at least four months 

 on the Isthmus." The brother became ill, they left suddenly for the 

 north, and the brother's death came during the return journey. 

 Rhodes wrote that "our sudden departure made us neglect making 

 notes on the birds which we had intended even neglecting to mark the 

 sex and the color of the eyes of some." The specimen in question 

 must have been included from some other source as it is obvious 

 from its appearance that it was not prepared by McLeannan. The 

 locality therefore is not the Canal Zone. 



ONCOSTOMA OLIVACEUM (Lawrence): Southern Bentbill, 

 Piquitorcido Aceitunado 



TodirostruiH olivacciiin Lawrence, Ibis, vol. 4, January 1862, p. 12. (Lion Hill, 

 Panama Railroad, Canal Zone, Panama.) 



Small ; bill heavy, distinctly curved as in O. cinerelgiilare, but breast 

 olivaceous. 



Description. — Length 90-100 mm. Adult (sexes alike), upper sur- 

 face, olive-green, crown with faint dusky central lines ; wings dusky ; 

 lesser wing coverts olive-green, lined and spotted indistinctly with 

 dusky ; middle and greater coverts edged and tipped with olive- 

 yellow ; primaries and outer secondaries edged with olive-green, inner 

 secondaries with greenish yellow ; tail dusky, edged with olive-green ; 

 foreneck and breast olive-yellow, lined with dull olive-green ; sides 

 and flanks light olive-green, lined with pale yellow ; under wing 

 coverts and axillars pale yellowish white ; under wing feathers edged 

 with dull white. 



A male collected at Chiva Chiva, Canal Zone, January 13, 1952, 

 had the iris light yellow ; bill dusky neutral gray, with the central 

 area of the gonys whitish ; tarsus light neutral gray ; toes avellaneous ; 

 claws neutral gray. In another male, taken at the mouth of the Rio 

 Paya, February 1, 1959, the iris was very light orange-yellow; base 

 of culmen and of gonys grayish white; rest of bill dark neutral gray; 

 front of tarsus neutral gray ; back of tarsus and toes mouse brown. 

 In a third, at the Peluca Hydrographic Station, Panama, February 25, 

 1961, the iris was light honey yellow ; base of rami, and lower surface 



