PLATE 18 



Steganopodes 



All figures X 100 



Fig. 13. Plotus anhinga. 



a. Distal barbule from inner vane of remex. 



b. Proximal barbule from same. 



c. Distal barbule from outer vane of remex, silvery gray portion. 



d. Proximal barbule from same, distal third of barb. 



e. Distal barbule from back feather, silvery gray portion, 

 /. Distal barbule from back feather, black portion. 



g. Proximal barbule from back feather, about middle of barb. 



Fig. 14. Phalacocorax penicillatus. 



a. Distal barbule from inner vane of remex. 



b. Proximal barbule from same. 



c. Distal barbule from outer vane of remex. 



d. Proximal barbule from same, distal third of barb. 



e. Distal barbule from back feather, velvety portion. 

 /. Proximal barbule from same. 



Fig. 15. Fregata aquila. 



a. Distal barbule from inner vane of remex. 



&. Proximal barbule from same. 



[408] 



