THAYER, BANGS : AVES FROM SAVANNA OF PANAMA. 219 



43. Myiozetetes similis superciliosus (Bp.). 

 Six specimens, young and adult, May 4 to 21. 



44. Myiodynastes audax nobilis (Scl.). 

 Three adults, both sexes. May 2 to 26. 



45. Onychorhynchus mexicanus mexicanus (Scl.). 

 Four specimens, both sexes. May 11 to 26. 



46. Myiobius atricauda (Lawr.). 

 Two specimens, ^ and 9 . ^^ay 6 and 8. 



47. Myiobius naevius naevius (Bodd.). 

 Two adult males, May 3 and 17. 



48. Bmpidonax traillii alnorum Brewst. 



Two females, May 2 and May 6. All other North American migrants had 

 left for the north by May; and Mr. Brown saw resident species only, except this 

 Empidonax. The alder flycatcher does not arrive on its breeding grounds in 

 eastern North America till the first week in June, and leaves for the south 

 again so early that on a former trip Mr. Brown took one at Pedregal, Panama, 

 AuCT. 21. It thus appears to spend a shorter time in the north than any other 

 migratory small bird. The two specimens have been identified by Mr. "Wil- 

 liam Brewster. 



49. Myiarchus ferox panamensis (Lawr.). 

 Two adult males. May 6 and 19. 



50. Muscivora tyrannus (Linne). 

 Five adults, both sexes, May 4 to 26. 



TURDIDAB. 

 51. Merula grayii casius (Bp.). 

 Six adults, both sexes, May 4 to 11. 



TROGLODYTIDAB. 

 62. Phengopedius fasciato-ventris albigularis (Scl.). 

 Four adults, both sexes, May 4 to 10. 



63. Phengopedius hyperythrus (Salv. & Godm.). 

 Five adults, both sexes, May 4 to 14. 



