



C. venustus by the narrower ruby-violet margin to the metallic throat, by the red pectoral band, 

 and of course more decidedly by the dark brown instead of yellow breast. Its affinities to this 

 latter species are shown in the coppery shade of the green plumage, and in the colouring of the 

 forehead, chin, and throat. 



The females of C. bifasciatus and of C. venustus are very similar in plumage ; but the latter 

 may be distinguished by its shorter bill. The female of the present species we may therefore 

 presume to be also very similar ; but it would be recognized from C. venustus by the greater length 

 of the bill, which is, if any thing, longer than in C. bifasciatus. It is, however, more difficult to 

 distinguish the females of this species from those of C. bifasciatus. 



With seven good specimens of females before me I can separate two forms — the first similar 

 to that which I describe as the female of this species, the other, a more olive-backed bird, with 

 a yellow abdomen and with the throat more distinctly striped, similar to the specimen described 

 and figured as a female of C. bifasciatus. 



I doubt, however, if these are the specific characters of the females of the two species. 



Of the first form there are two specimens labelled " female ;" one, which I have above 

 described, was procured at Landana on the 31st January, the other at Chinchoxo on the 1st 

 April. This I believe to be the winter plumage ; and in four specimens of this form none of 

 the measurements differs by more than - 05 inch. 



The second form is certainly the plumage of immature females, and possibly also of the 

 adult female in summer dress. Of these I have three from Landana, in which the measurements 

 vary as follows— culm en 0"65 to 070, wing 1-72 to 2-0, tail 1-10 to 1-15, tarsus 0-60. The 

 smaller measurements are apparently due to immaturity. 



I figure in the accompanying Plate the adult typical specimen of C. bouvieri, as well as the 

 bird which I believe to be its true female. I cannot, however, be certain that it is not a hen of 

 C. bifasciatus. 



