FAMILY CAPITONIDAE 497 



cheeks and a narrow line above and back of eye grayish blue ; a small 

 black post-auricular spot, and a posterior bar of saffron-yellow; 

 throat grayish yellow, bordered posteriorly by a band of saffron- 

 yellow or orange ; lower breast olive-yellow ; rest of under surface, 

 including the under wing area, as in male. 



Immature male, with the posterior area of the crown and the hind- 

 neck dark green, washed lightly with saffron-yellow. 



Whether these smaller, green-backed barbets are to be recognized 

 as comprising a genus Eubucco distinct from the others is not clear 

 from available data. The several species that comprise the group, 

 all with green upper surface and bright red heads in the males, differ 

 in general appearance from the larger forms of the genus Capito, 

 but in detail of external structure all are closely similar. The only 

 difference is in the form of the culmen, particularly at its base. The 

 upper surface of this area in Capito becomes flat posterior to the 

 center, and remains broad, with little or no constriction, until the 

 horny ramphotheca terminates on the forehead. In the Eubucco 

 group the culmen remains rounded throughout its length, and becomes 

 decidedly narrowed at the distal end. Until skeletons are available for 

 comparison it seems desirable to continue the use of Eubucco as found 

 in Peters (Check-list Birds World, vol. 6, 1948, p. 27) rather than 

 to list the species concerned in the genus Capito. 



In the original description Lafresnaye had both male and female 

 specimens. As the sexes differ so greatly he thought that two species 

 were represented, so that he named the male Micropogon bourcierii 

 and the female M. hartlaubi. The error finally was recognized by 

 Salvin (Ibis, 1870, p. Ill) who found on examination of the speci- 

 mens available on which the sex was indicated that all males were 

 called bourcierii and all females hartlaubi. In recognition of this 

 Shelley later named the subspecies of Costa Rica and Panama salvini 

 in his honor. 



The red-headed barbet, the more common of the three kinds of 

 barbets found in Panama, has two subspecies represented in the 

 Republic, one around the volcano in the west, and the other in the 

 mountains near the Colombian boundary. 



EUBUCCO BOURCIERII SALVINI (Shelley) 



Capito salvini Shelley, Cat. Birds Brit. Mus., vol. 19, 1891, p. 108 (in key), 

 p. 119, pi. 5, fig. 4. (Costa Rica to Chiriqui.) 



Characters. — Male with breast distinctly orange ; female with fore- 

 neck yellower green. 



