306 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



189 (177.2); tail, 101-122 (111.4); culmen, 15-18.5 (16.9); tarsus, 

 23.5-26 (24.7); middle toe, 26.5-31 (28.3).° 



Young. — Coloration much duller than in adults; pileum deep gray, 

 or brownish gray (the forehead more brownish), without any metallic 

 gloss; back, scapulars, and smaller wing-coverts brownish, some of 

 the feathers (especially wing-coverts) with pale rusty brown terminal 

 margins; foreneck and chest vinaceous-grayish, sometimes tinged 

 with fawn color or intermixed with fawn-colored feathers ; otherwise 

 essentially as in adults. 



i Twenty-one specimens. 



Locality. 



Wing. 



Tail. 



Ex- 

 posed 

 culmen. 



Tarsus. 



Middle 

 toe. 



MALES. 



Two adult males from Chiapas 



One adult male from Guatemala 



Four adult males from British Honduras 



One adult male from Honduras 



One adult male from Nicaragua 



Ten adult males from Costa Eica 



One adult male from western Panama 



One adult male from middle Panama (Canal Zone) 



One adult male from Buenaventura I., Panama 



Four adult males from San Miguel I., Panama 



Seven adult males from Colombia 



Five adult males from Venezuela 



Four adult males from Tobago (=C.r. tobagensis) 



Four adult males from trans-Amazonian Brazil (=- C. r. tylvea- 



tris) 



One adult male from Paraguay (= C. r. sylvestris) 



FEMALES. 



One adult femaltffrom Tabasco 



Two adult females from Guatemala 



One adult female from British Honduras 



Six adult females from Costa Eica 



Two adult females from western Panama 



Six adult females from San Miguel I., Panama 



Three adult females from Santa Marta, Colombia 



One adult female from British Guiana (,— C.r. rufina) 



One adult female from Diamantina, Lower Amazon (= C. r. 



rufina).., 



Three adult females from Chapada, Mattojrrosso, Brazil (= C. r. 



sylveslris) 



One adult female from Bolivia (= C. r. sylveitris) 



One adult female from eastern Peru (= C. r. rufina/) 



178 



183.5 



179.2 



180 



180.5 



177.8 



176.5 



182 



190 



185.5 



183.5 



181.4 



187.9 



188.9 

 180.5 



173 



177 



169 



173 



176 



184.8 



175.5 



170 



170 



179.8 

 183 



176 



118.7 



120 



110.9 



HI 



115.5 



112.5 



110.5 



116 



119.5 



116.5 



118.6 



112.5 



117.5 



106.9 

 106 



113 

 114.2 

 113 

 107.7 

 106.2 

 113.7 

 113.5 

 97 



101 



106.2 

 113 



17.7 

 16.5 

 17 



18 



16.9 



16.5 



16 



20 



17.6 



17.1 



16.6 



17.1 



17.4 

 17 



18 



16.2 



16 



17 



15.7 



17.5 



16.3 



15.5 



16 



16.2 



17 



15 



25 



25 



24.7 



26.5 



25.5 



24.5 



24.5 



25 



24.5 



25.9 



24.6 



25 



26.2 



23.5 

 24.2 

 24.5 

 24.2 

 24.5 

 25.7 

 24.8 

 22.5 



24.5 



24.5 

 23.5 

 24 



29 



29 



29.1 



30 



29.5 



28.1 



29.5 



29.6 

 29.4 



33.4 

 31.5 



27.7 



27 



28 



27.2 



30.1 



27.2 



28 



27.5 



25.5 

 28.5 



Specimens from Venezuela, Colombia, and San Miguel Island, Panama, average 

 more deeply colored than those from Central America and southern Mexico (Costa 

 Rican specimens being, apparently, the palest), but on the whole they seem to agree 

 better with C. r. pallidicrissa than with C. r. rufina. Some specimens from the coun- 

 tries named are, however, quite as gray beneath as typical C. r. rufina. 



