362 Annals of the Carnegie Museum. 



these slight variations may be seriously questioned, although their ex- 

 istence may be admitted. Mr. Bangs, in describing the Santa Marta 

 bird under the name pollens, compared it with the Central American 

 form, acedia, which is itself barely separable from placens of Mexico. 

 With an ample series of accola from Costa Rica (including several 

 specimens from Mr. Bangs' collection) available for comparison in 

 the present case, it appears that pollens differs from that form merely 

 in the more uniformly yellowish under parts, there being less grayish 

 shading on the throat and breast, and less of the streaked appearance. 

 The upper parts also are a trifle purer green, but the alleged dif- 

 ference in the color of the sides of the crown, upon which Dr. Chap- 

 man lays so much stress, we are entirely unable to appreciate. On the 

 other hand, pollens is even closer to true viridicata, as represented in 

 the Carnegie Museum collection by twelve specimens from Bolivia and 

 Argentina, differing therefrom only in the very slightly paler color 

 of the upper parts and the paler, more yellowish, less olivaceous gray 

 shading of the breast. These differences are not well marked, and are 

 bridged over by individual variation, but in deference to the views of 

 other authors they may be held to be of subspecific value, at least 

 provisionally. 



A Tropical Zone species, confined entirely to the lowlands, and not 

 recorded as yet from the west or south side of the Sierra Nevada, al- 

 though its general range is known to extend up the Magdalena River 

 at least as far as Honda. It is by no means a rare bird in its chosen 

 haunts, which seem to be confined to woodland along the streams. 



320. Elaenia gaimardii bogotensis von Berlepsch. 



Myiopagis macilvainii (not Elainea macilvainii Lawrence) Bangs, Proc. Biol. 



Soc. Washington, XII, 1898, 136 ("Santa Marta"). 

 Myiopagis gaimardi (not Muscicapara gaimardii D'Orbigny) Allen, Bull. 



Am. Mus. Nat. Hist., XIII, 1900, 148 (Bonda). 

 Elaenia gaimardi bogotensis von Berlepsch, Ornis, XIV, 1907, 4 2I > 447 

 •("Santa Marta" and Bonda). — Ridgway, Bull. U. S. Nat. Mus., No. 50, 



IV, 1907, 908 ("Santa Marta"; ref. orig. descr.). 

 Elainopsis gaimardii gaimardii Ridgway, Bull. U. S. Nat. Mus., No. 50, IV, 



1907, 800, in text ("Santa Marta"; meas. ; crit.). 



Twenty-six specimens : Bonda, La Tigrera, Don Diego, and Dibulla. 



This form was described from a " Bogota " skin in the collection of 



\on Berlepsch, Santa Marta specimens being considered the same. 



