514 BIRDS OF THE REPUBLIC OF PANAMA PART 2 



glossus torquatus with reference to a specimen from Hicks. The 

 bird in question, in the collections of the U.S. National Museum is the 

 related species P. frantzii. 



The present race has a broad range from southern Mexico through 

 Panama and the whole of northern Colombia, with exception of the 

 Yucatan Peninsula and northern Peten, where a smaller, paler form 

 A. t. erythrozonus is found, and a limited area in Chiriqui and south- 

 western Costa Rica inhabited by the species P. frantzii. 



The closely allied Pteroglossus sanguineus is found in northern 

 Choco, where it has been recorded by Haffer (Amer. Mus. Nov., 

 no. 2294, 1967, pp. 27-36) near Jurado, on the upper Rio Jurado, on 

 the Rio Salaqui, and at Sautata near the Panamanian boundary. It 

 is possible that it may be found on the upper Rio Jampavado which 

 heads on the Darien side of the boundary, and flows southeast to 

 join the Rio Jurado about 10 kilometers above its mouth. This bird 

 is similar in general to nominate torquatus, but differs in lack of the 

 chestnut collar on the hindneck, and in bill color, in which the maxilla 

 has a distinct black band along the side and the tip yellow. In 

 torquatus the distal end of the maxilla is black and the side yellow, 

 except for black shading on the notches along the cutting edge. Haffer 

 has found torquatus and sanguineus hybridizing in a limited area 

 where they meet north of Turbo, on the eastern shore of the Golfo de 

 Uraba, and at Sautata on the lower Rio Atrato. In his diagram 

 (fig. 7) he has plotted a similar zone of mixing where the two may 

 meet in the Jurado area on the west coast. 



PTEROGLOSSUS FRANTZII Cabanis: Frantz's Aragari, Cusingo 



Figure 66 



Pteroglossus Frantzii Cabanis, Sitzungsb. Ges. Naturforsch. Freunde Berlin, 

 November 19, 1861 (page not numbered). (Monte de Aguacate, Costa Rica.) 



Like the collared aracari, but with maxilla red to orange except at 

 base, and a broad band of red across lower breast and abdomen. 



Description. — Length 390-440 mm. Serrations on cutting edge of 

 maxilla small, with the notches less prominent than in P. t. torquatus. 

 Adult (sexes alike), head and neck glossy black; narrow collar across 

 base of hindneck dark chestnut ; back, scapulars and wing coverts olive 

 greenish ; lower back, rump, and upper tail coverts bright red ; tail 

 olivaceous-black, with the shafts of the feathers plain black, the two 

 central pairs, and to a lesser extent the next pair adjacent, tipped 

 with cinnamon-rufous (a mark that is lost when the feather becomes 

 worn and abraded) ; under surface yellow, washed with red on breast ; 



