1917.] Chapman, Distribution of Bird-life in Colombia. 201 



) 

 ramboe above cited show much variation in color, particularly of the upper- 

 parts. The female from Barbacoas has the markings of the back and head 

 more rufous than in the male from Esmeraldas, but it is by no means 

 so extensively marked with this color as it is in the male from Bagado. 

 On the other hand, the male from the Baudo ' Mountains is the darkest 

 bird of the four, the rufous vermiculations being greatly reduced. This 

 Baudo specimen is nearer the type of baliolus, so far as the color of the 

 back is concerned, than it is to the male taken from Bagado, distant 

 seventy-five miles, and in the same faunal zone. So far as the color of the 

 upperparts is concerned, it is, I think, safe to attribute the dark color of 

 baliolus to individual variation in which the rufous markings are reduced 

 to a minimum. 



Below, all five specimens are much alike, but the most richly colored of 

 the series are the type of baliolus and the male from Esmeraldas. In short, 

 the differences between parambw, as it is represented by our four specimens, 

 and the type of baliolus, resolve themselves into the single character of a 

 narrow, white malar Stripe which in the type of baliolus extends from the 

 gape to the white breast-patch. 



Three of our specimens show no trace of such a stripe, but in the highly 

 colored male from Bagado there is a faint trace of one in the basal white 

 markings of a few feathers, on each side of the throat. Whether this very 

 slight indication of a white malar stripe possesses any significance or not 

 I am unable to say, but, in any event, the material at hand, considered in 

 relation not only to the range of color it shows, but to the localities it repre- 

 sents, throws strong suspicion on the specific validity of baliolus. 



If this form could be allotted a different faunal area its slight differences 

 might be considered of geographic value, but with specimens of paramboe 

 taken both south and north of its type-locality and in the same zone, it can- 

 not be considered a representative form, and the alternative of specific dis- 

 tinctness does not appear to be warranted by the facts in the case. 



Bagado, 2; Baudo Mts., 2; Barbacoas, 1. 



(142) Odontophorus strophium (Gould). 



Ortyx (Odontophorus) strophium Gottld, P. Z. S., 1843, p. 134 ("The Southern 

 Countries of Mexico" = Colombia; cf. Cat. Bds. B. M., XXII, p. 442). 



A male from Subia, near Bogota, resembles Gould's plate of this species 

 (Monog. Odont. pi. 31) but has the white spots on the underparts reduced 

 to a few shaft-streaks on the front and sides of the breast. 



Subia, 1. 



