DESCRIPTIONS OF TWO NEW SPECIES OF NUN 

 BIRDS FROM PANAMA' 



By E. W. nelson 



Two new species of Monasa are among: the interesting- birds 

 collected by E. A. Goldman while working- on the Smithsonian 

 Biolog-ical Survey of Panama during- the winter of 191 1. They 

 were collected at the same locality on the base of Cerro Azul, north- 

 west from Chepo, and only a sing-le specimen of each was obtained. 

 No others were seen during the entire season in the Canal Zone and 

 adjacent. territory. T wish to express my obligation to Mr. Robert 

 Ridgway, Curator of Birds, U. S. National Museum for his aid in 

 the determination of the status of the species described here. 



MONASA FIDELIS, new species 

 Goldman's Nun Bird 



Type No. .207666, adult male, U. S. National Museum, Biological 

 Survey Collection; collected on Cerro Azul. Panama (altitude 800 

 feet), March 21, 1911, by E. A. Goldman (original number 14127). 



Distribution. — Known from type locality only. 



Specific characters. — Much like grandior of Costa Rica, but anter- 

 ior point of feathered malar area white as in morpluvus from eastern 

 Brazil, and black of head and neck extending farther back, and 

 more abruptly defined posteriorly, reaching front of back above and 

 middle of breast below : wing coverts paler gray than in grandior 

 but much darker than in pallesa^ns. 



Measurements. — Wing, 134: tail, 115 ; tarsus, 21 : culmen, 41. 



MONASA SIMILIS, new species 

 Cerro Azul Nun Bird 

 Type No. 207665, adult female, U. S. National Museum, Biologi- 

 cal Survey Collection: collected on Cerro Azul, Panama (altitude 

 800 feet) March 24, 191 1, by E. A. Goldman (original number 



14180). 

 Distribution. — Known from type locality only. 



'This paper is the seventh dealing with the results of the Smithsonian 

 Biological Survey of the Panama Canal Zone. 



Smithsonian Miscellaneous Collections, Vol. 56, No. 37 



