no 



his various collections many excellent skins of the present Bucco, which he met with in several 

 localities during his excursions into the district surrounding Medellin — the capital city of the 

 State of Antioquia. 



It should be observed that the Antioquian skins of Bucco radiatus, one of which is faithfully 

 represented in the larger figure of the accompanying Plate, difier from the typical specimens from 

 Bogota (as represented in the hinder figure) in having the whole lower surface, except the chin, 

 overspread with pale rufous or cinnamomeous, and the under wing-coverts also of a darker hue. 

 It is possible, therefore, that the Antioquian bird may belong to a distinct local form, which 

 some systematists would almost regard as entitled to a specific name ; but I am by no means sure 

 that this is the case. One of the four Bogota skins now before me belongs decidedly to the 

 rufous-breasted form ; and so does an imperfect skin from Eastern Ecuador, procured by 

 Mr. Buckley near Sarayacu. It is evident, therefore, that the southern birds are not always 

 of the pale-breasted variety. My conjecture is that the skins of the latter form may have been 

 rendered paler by being damped in the process of manufacture, as I think I have observed 

 in other " Bogota " skins. But I am not sure that this is the correct interpretation of the 

 variation. That it is not of sexual origin seems evident from Mr. Salmon's marked specimens. 



From Antioquia Bucco radiatus extends northwards into the Panamanic isthmus ; Mr. Salvin's 

 collector Arce obtained specimens in Veragua. 



From B. chacuru the present species may be at once distinguished by its lead-coloured bill 

 and the transverse radiations of the undersurface, as well as by the entii-e absence of the large 

 black blotches on the sides of the neck, which form one of the characteristic features of the 

 latter species. From B. striolatus, to which it is, perhaps, even more closely allied, it may be 

 recognized by the markings on the lower plumage being transverse instead of longitudinal. 



There are fourteen examples of Bucco radiatus in my collection and that of Messrs. Salvin 

 and Godman, namely : — 



No. 



Sex.. 



Mus. 



Patrra . 



1. 



— 



P.L. S. 



Sarayacu, Ecuador {Buckley). 



3-. 



— 



S.-G. 



Sarayacu, Ecuador {Buckley) . 



3. 



. — 



S.-G. 



Balzar Mountains, Ecuador. 



4. 



— 



S.-G. 



Balzar Mountains, Ecuador. 



5. 



— 



S.-G. 



Bogota. 



6. 



— 



S.-G. 



Bogota. 



7.. 



— 



P. L. S. 



Bogota (1817). 



8. 



— 



P. L. S. 



Bogota. 



9. 



— 



P.L. S. 



Eemedios, Antioquia {Salmon). 



10. 



s 



P. L. S. 



Nichi, Antioquia {Salmon). 



11. 



6 



S.-G. 



Nichi, Antioquia {Salmon). 



12. 



— 



S.-G. 



Remedies, Antioquia {Salmon). 



13. 



— 



P.L. S. 



Panama. 



14. 



— 



S.-G. 



Veragua {Arce). 



Long, tota, 



7-0 

 7-0 

 7-0 

 7-0 

 7-8 

 7-4 

 8-0 

 9-0 

 8-5 

 8-0 

 7-4 

 7-8 



alae, 

 3-7 

 3-7 

 3-5 

 3-5 

 3-4 

 3-5 

 3-5 

 3-7 

 3-4 

 3-5 

 3-3 

 33 

 3-6 

 3-7 



caudse, rostri. 



2-9 

 3-0 

 2-8 

 30 

 2-9 

 30 

 2-9 

 30 

 2-9 

 3-3 

 3-2 

 3-2 



The figures and descriptions are taken from No. 7, the type of the original description, 

 and No. 10. 



