Nov. 1907. BIRDS FROM GUATEMALA DEARBORN. 131 



276. Myioborus mi mains flammeus (Kaup). 



One was taken from a flock of warblers, mainly Oreothlypis super- 

 ciliosa, at 8,000 feet near Tecpam. Iris hazel. 



277. Basileuterus rufifrons dugesi Ridgway. 



Three specimens, a male and two females, were taken April zoth 

 at Lake Atitlan. They have been compared with six specimens of 

 B. r. rufifrons from eastern Mexico, and with the same number of 

 May specimens of B. r. dugesi from Jalisco, and they evidently belong 

 to the latter subspecies. If. this form were a permanent resident 

 it would undoubtedly have been reported from Guatemala before 

 this ; hence it is reasonable to conclude that these birds were migrants. 

 Such a migration as this must be due to an instinctive impulse, rather 

 than to necessity, as the bird's summer range is not uninhabitable 

 in winter. These specimens were found in the low shrubbery that 

 covers the precipitous shore of the lake near Panajachel. 



278. Basileuterus rufifrons delattrii Bonaparte. 



Seven specimens, five males and two females, were taken at Patu- 

 lul between March 26th and April 5th. All of these have the nape 

 olive-green, slightly darker than the back. Two other specimens, 

 one of each sex, taken at Lake Amatitlan February 27th, have gray 

 napes, otherwise they are like those from Patulul. According to 

 Ridgway* the gray nape is a characteristic of delattrii; but according 

 to Salvin and Godman**, the nape of this form should be "olive like 

 the back." 



If this series includes only one form, and that delattrii, which 

 appears to be the case, both authorities have hit the truth. Prof. 

 Ridgway kindly allowed the type of B. r. salvini Cherrie, to be sent on 

 from Washington for examination in this connection. But none of 

 this series has a trace of white on the ear-coverts, while salvini belongs 

 to the group having the lower portion of the auriculars whitish. 

 There is no sign of moult on any of these specimens and there is 

 nothing about them to indicate any difference in age between those 

 with gray napes and those with olive napes. Iris dark brown. 



279. Basileuterus culicivorus (Lichtensteiri) . 



Two were collected at Patulul. Iris dark brown. 



280. Ergaticus versicolor (Salvin). 



This species was found only in the cypress region above 9,000 feet. 



*Bull. U. S. Nat. Mus., No. 50, part II, p. 749- 

 **Biologia Central! Americana, Aves, vol. I, p. 177. 



