Vol. XXIII 



1906 J Clark, Pterylosis of Swifts and Hummingbirds. 



81 



forked, the middle pair of rectrices being shortest and the outer 

 pair longest. The legs are feathered just over the tarsal joint. 



Specimen examined. 



There is nothing to he said of this genus to distinguish its ptery- 

 lography from other hummingbirds. The tail is deeply forked, 

 the outer feathers being much the longest. 



Specimen examined. 



No. Name 



1 I Thalurania sp.? 



Locality. 



Collection. 



Condition. 



Brazil. Phil. Acad. Nat. Sci. Alcoholic; good. 



Lampornis. 



In this genus, the secondaries are 6 or 7, but the wing is clearly 

 aquincubital. The skin on the hand, and even on the forearm, 

 is very dark. In the specimens examined the rectrices were 2-1- 

 3-4-5 in one, and 4-5-3-2-1 in the other. 



Specimens examined. 



