1917.] Chapman, Distribution of Bird-life in Colombia. 569 



(3892) Arremonops conirostris conirostris (Bonap.). 



Arremon conirostris Bonap., Consp. Av., I, 1850, p. 488 (Brazil "Bogotd"). 



Embemagra conirostris Stone, Proc. Acad. N. S. Phila., 1899, p. 307 (Ambalema). 



Arremonops venezuelensis Ridgw., Auk, XV, 1898, p. 228 (Puerto Cabello, Ven.); 

 Allen, Bull. A. M. N. H., XIII, 1900, p. 163 (Santa Marta). 



Arremonops conirostris canens Bangs, Proc. Biol. Soc. Wash., XII, 1898, p. 140 

 (Santa Marta). 



Arremonops caneus Allen, Bull. A. M. N. H., XIII, 1900, p. 164 (Santa Marta). 



Of general distribution in the Tropical Zone but apparently wanting in 

 the Cauca Valley. On the Pacific coast A. c. chrysoma reaches southwest 

 Colombia but no representative of the group has been recorded from between 

 Barbacoas and Panama. 



Specimens from the western base of the Eastern Andes (vicinity of Honda) 

 appear to be inseparable from those from near the eastern base of the range 

 (Buena Vista), though on both sides the birds are restricted to the Tropical 

 Zone. Accepting Hellmayr's designation of the type-locality for this species 

 as "Bogota" ^ these birds are typical of conirostris, and I place with them 

 Santa Marta specimens {A. canens Bangs) though they average slightly 

 browner above. Six specimens from Bermudez, Venezuela, average some- 

 what smaller but show no difference in color from the Honda and Buena 

 Vista birds. If they properly represent venezuelensis (described from Puerto 

 Cabello) I am unable to appreciate its characters. Todd (Ann. Carnegie 

 Mus. 1912, p. 199) and Hellmayr (1. c.) consider canens to be synonymous 

 with venezuelensis, an opinion with which I agree though my material shows 

 canens to differ somewhat from conirostris, while venezuelensis appears to be 

 identical with it. Specimens from Chicoral, on the west side of the Mag- 

 dalena Valley, and 1200 feet above Honda, are slightly larger than Honda 

 specimens. I think that we are warranted, however, in accepting either 

 Honda or Buena Vista birds as topotypical. The affinities of richniondi, the 

 Panama and Central American bird, appear to be with chrysoma rather than 

 with conirostris, which differs from both the preceding in having gray in the 

 back and less yellow in the wing-coverts. 



Puerto Berrio, 2; Malena, 5; Nare, 1; Honda, 6; Chicoral, 4; Buena 

 Vista, 7; Villavicencio, 3. 



Measurements. 



i Archiv. fiir Naturg., 1912, p. 69. 2 3 more specimens not sexed. 



