1917.] Chapman, Distribution of Bird-life in Colombia. 317 



(1462) Trogon strigilatus chionurus Scl. & Sah. 



Trogon chionurus Scl. & Salv., P. Z. S., 1870, p. 843 (Lion HiU, Panama); Wyatt, 

 Ibis, 1871, p. 374 (Paturia; Scl. & Salv., P. Z. S., 1879, p. 535 (Remedios; Nech6). 

 Trogon melanopterus Cass., Proo. Acad. N. S. Phila., 1860, p. 136 (R. Truando). 



Occupies the humid Tropical Zone west of the Eastern Andes. Our 

 species agrees with others from Panama including the type of T. eximius 

 LawT. 



Salaqui, 1; Dabeiba, 1; Alto Bonito,3; Bagado, 1; Juntas de Tamana, 

 3; San Jos6, 1; Barbacoas, 6; Puerto Valdivia, 4; west of Honda 

 (1500 ft.), 2. 



(1463a) Chrysotrogon caligatus columbianus Chapm. 



Chrysotrogon caligatus columbianus Chapm., Bull. A. M. N. H., XXXIII, 1914, 

 p. 607 (Opon, Col.). 



Trogon caligatus Wyatt, Ibis, 1871, p. 374 (Naranjo) ; Allen, Bull. A. M. N. H., 

 XIII, 1900, p. 135 (Cacagualito; Minca). 



Char, suhsp. — Resembling C. c. caligatus (Gould) of Central America in the 

 vermiculation of the wings and feathering of the tarsus, but with the head blue or 

 purplish as in C. violaceus (= meridionalis) and C. ramonianus; size, particularly 

 of bill, smaller than in allies. Wing, 106; tail, 116; bill from nostril, 10 mm. 



A Tropical Zone species known only from the humid Cauca-Magdalena 

 region and northward to Santa Marta. 



It will be observed that this form to some extent bridges the gap between 

 caligatus and violaceus and, in spite of the differences in the feathering of their 

 tarsi, it seems not improbable that these two forms will be found to inter- 

 grade. There is less difference in size between specimens from Nicaragua 

 and Ecuador, than there is between those from the Caribbean Coast of 

 Colombia at Santa Marta and the Magdalena Valley. The Santa Marta 

 birds, however, are geographically interposed between Panama and Trini- 

 dad, while the Magdalena River form (true columbianus) is an isolated off- 

 shoot removed from the direct line of geographical intergradation. 



Puerto Valdivia, 1; Honda, 1; Opon, 2; Puerto Berrio, 1. 



(1465) Chrysotrogon ramonianus (Dev. & Des Murs). 



Trogon ramoniana Dev. & Des Murs, Rev. Zool., 1849, p. 331 (Sarayacu, 

 Ecuador). 



On geographical grounds I refer to this species (of which we have a male 

 from Napo) a female from Florencia in the Caqueta region. 

 Florencia, 1. 



