248 Notes upon Yucatan Birds. 



A comparison of the female with specimens of the same sex 

 of C. tricolor, shows the differences to be equally as great as those 

 of the males. 



Female. — The upper plumage, tertiaries and wing-coverts are black, 

 narrowly barred with white ; rump and upper tail-coverts white ; tail- 

 feathers black, the ends of the outer ones narrowly margined with white, 

 and the outer edges of the lateral feathers indented with white ; head 

 light brownish-ash, on the crown hoary, front, chin, and sides of the head 

 to a line with the middle of the eye, orange-yellow ; on the hind neck 

 there is a narrow band of vermilion ; under parts brownish ash, with the 

 middle of the abdomen vermilion; flanks barred with black and white; 

 rather dull in color ; under tail coverts gray, marked centrally with black, 

 bill black and narrow ; tarsi and toes black ; '' iris black." 



Length (skin), 6J inches ; wing, 4^ ; tail, 3| ; bill, 11-16. 



Besides differences of marking in the plnmage, as shown in 

 the Yncatan list, the bill and feet are much smaller than those 

 of 0. tricolor. Of this last species, I have several specimens of 

 both sexes. 



In Proc. U. S. Xat. Museum, 1881, p. 93, Mr. Eidgway gives 

 "A Review of the Genus Centurus." Unfortunately the male 

 specimen, noted in my Yucatan list, could not be found in the 

 Nat. Museum collection ; therefore an expression of his opinion 

 from an autoptical examination was not possible. 



