PLATE 35 



Types of Down Barbules, continued 



Entire barbules drawn X 40; portions of barbules marked in parenthesis 

 drawn enlarged, X 285. 



Fig. 101. Guara rubra. 



a. Entire barbule. 6. basal portion, c. terminal portion. 



Fig. 102. Phoenicopterus ruber. 



a. Entire barbule. 6. basal portion, c. terminal portion. 



Fig. 103. Olor columManus. 



a. Entire barbule. b. basal portion, c. terminal portion. 



Fig. 104. Mergus americanus. 



a. Entire barbule. 6. basal portion, c. distal portion. 



Fig. 105. Falco sparverius. 



a. Entire barbule. b. basal portion, c. middle portion, d. terminal 

 portion. 



[442] 



