BIRDS OF NORTH AND MIDDLE AMERICA. 



393 



hlack or dusky, the middle coverts very broadly tipped, the greater 

 coverts and inner secondaries very broadly edged " with pale sulphur 

 or deep primrose yellow, the remiges (except inner secondaries) nar- 

 rowly edged with olive-yellow; a narrow supraloral streak of grayish 

 white; a white orbital ring, interrupted at anterior angle of eye by a 

 dusky triangular spot; auricular, suborbital, and malar regions gray- 

 ish, the first narrowly streaked with white; chin, throat, and chest 

 pale grav, very faintly tinged with pale yellow; rest of under parts, 

 including axillars and under wing-coverts, light sulphur yellow, the 

 sides (especially sides of breast) tinged with olive; a dusky spot occu- 

 pying under primary-covert area; inner webs of remiges edged wdth 

 yellowish white; maxilla black, mandible pale brownish (in dried 

 skins) ; legs and feet dusky horn color (in dried skins) . 



Adult male. — Length (skin), 121; wing, 62.5; tail, 50; exposed 

 culmen, 11.5; tarsus, 15.5; middle toe, 9.5.'' 



Adult female. — Length (skin), 118; wing, 61.5; tail, 47.5; exposed 

 culmen, 11.5.*^ 



Panama (Lion Hill Station; Panama Cit}^); eastern Costarica 

 (Carrillo).^' 



Cyclorhynchus cinereiceps (not of Sclater) Lawrence, Ann. Lye. N. Y., vii, 18G2, 

 329 (Lion Hill Station, Panama R. R.). 



Rhynchocychts marginaUts IjAvfR-ENCE, Proc. Ac. Nat. Sci. Phila., Dec, 1868 (pub. 

 Apr. or May, 1869), 429 (Lion Hill Station, Panama R. R.; coll. G. N. Law- 

 rence). 



R[kynchocydus] marginatus Allen, Bull. Am. Mus. N. II., iv, 1892, 317, in text 

 (crit.). 



[Rhynchocyclus] marginatus Sharpe, Hand-list, iii, 1901, 102. 



a These yellow markings are very conspicuous, and occupy nearly the entire outer 

 web of both middle and greater coverts. 



ft One specimen (the type). 



cOne specimen (co-type); legs broken. 



rfThis very distinct species, although synonymized by Doctor Sclater with R. sul- 

 pluirescens is much more nearly related to R. cinereiceps, from which it differs in smaller 

 size, much darker coloration of upper parts, and conspicuous clear yellow wing- 

 markings. ^ 



The specimen from Costa Rica (Carrillo, Nov. 24, 1898, C. F. Underwood), in Mr. 

 Bangs' collection, is precisely like the type in coloration except that the pileum 

 and hindneck are slightly darker and decidedly clearer slate color, contrasting quite 

 abruptly with the olive-green of the back, and the yellow of the wing-markings and 

 alxlomen slightly deeper, differences doubtless due, in part at least, to the ])lumage 

 being fresher. The measurements, however, are decidedly different, comparing with 

 those of the type from Panama as follows : 



Locality. 



Adult male (type) from Panama City. 

 Adult male from Carrillo, Costa Rica. . 



Wing. 



Tail. 



Ex- 

 posed 

 culmen. 



11.5 

 12.5 



Tarsus. 



15.5 

 16.5 



Middle 

 toe. 



