PLATE 34 
Types oF DowN BARBULES 
Entire barbules drawn 40; portions of barbules marked in parenthesis 
drawn enlarged, * 285. 
Fig. 
Fig. 
Fig. 
Fig. 
96. 
Spheniscus mendiculatus. 
Entire barbule. 6b. same, enlarged. 
Puffinus griseus. 
Entire barbule. 0b. basal portion. c. terminal portion. 
Sula variegata. 
Entire barbule. 0b. same, enlarged. 
Plotus anhinga. 
Entire barbule. 0b. basal portion. c. terminal portion. 
Botaurus lentiginosus. 
Entire barbule. 0b. basal portion. c. terminal portion. 
[440] 
