BIRDS OF SOUTHERN VERACRUZ — WETMORE 289 



The specimens from Tres Zapotes and Tlacotalpam are variously 

 intermediate but seem nearer the guatimalensis type in slightly 

 darker color above and below. There is much individual variation 

 in depth of hue, and it must be recognized that as these are birds that 

 live much in the open under an intense sun they are subject to 

 definite fading, a fact that makes comparisons difficult where the 

 differences that may exist are slight at best. The races guatimale?is?£ 

 and palliatus are smaller when compared to texanus and derbianus. 

 The alleged differences in size and form of bill in the various races 

 to me are insignificant or not apparent. 



MYIARCHUS CRINITUS BOREUS Bangs: Northern Crested Flycatcher 



Myiarchus crinitus boreus Bangs, Auk, Apr. 189S, p. 179 (Scituate, Mass.). 



Carriker shot the only one obtained on the lower slopes of Cerro de 

 Tuxtla on May 7, a late date for the species. 



I heard one calling at the camp at Tres Zapotes on March 19, 1939, 

 and recorded others on March 20, 21, and 22. Whether these were the 

 northern or the southern form is, of course, unknown. 



MYIARCHUS CINERASCENS CINERASCENS (Lawrence) : Ash-throated Flycatcher 



Tyrannula cinerascens Lawrence, Ann. Lye. Nat. Hist. New York, vol. 5, Sept. 

 1851, p. 121 (western Texas). 



The only one secured is a female, shot by Carriker on February 10, 

 1940, in the sandhills near the coast at El Conejo. Apparently this 

 species is subject to some fading, since this specimen, in fresh plumage, 

 has clearer yellow and gray tones below than skins obtained later in 

 the year in the United States. 



MYIARCHUS TYRANNULUS NELSONI Ridgway: Mexican Crested Flycatcher 



Myiarchus tyrannulus nelsoni Ridgway, U. S. Nat. Mus. Bull. 50, pt. 4, 1907, p. 

 903 (Altamira, Tamaulipas). 



A common species that is represented by the following specimens : 

 Tres Zapotes, March 15, 18, 25, and 27 and April 5, 1939, and March 

 18, 25, and 27 and May 2, 1940; El Conejo, May 15, 1940. Carriker 

 did not obtain it during winter, while after the middle of March it 

 was common. It appears that it may be migratory, at least in part. 



I found these flycatchers in fairly open areas in the forest or along 

 lines of trees left standing at the borders of cultivated fields. The 

 common notes are louder than those of its smaller relative in this area 

 and were more like those of Myiarchus crinitus. I heard it give an- 

 other call that suggested in tone the whistle of the Bartramian sand- 

 piper. The specimen taken on May 2 is decidedly paler below than 

 the others but offers no other peculiarities. It is in well-worn 

 plumage. 



