PLATE 16 



COLYMBIFOKMES 



All figures, except 97i, X 100 



Fig. 8. Gavia ivimer. 



a. Distal barbule from inner vane of remex. 



6. Proximal barbule from same. 



c. Distal barbule from outer vane of remex, pennulum in lateral view. 



d. Proximal barbule from same distal third of barb. 



e. Distal barbule from breast feather. 

 /. Proximal barbule from same. 



Fig. 9. Aechviophorun occidentalis. 



a. Distal barbule from inner vane of remex. 



6. 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. 

 /. Proximal barbule from same. 



g. Distal barbule from back feather, near tip of barb. 

 7i. Portion of barb from breast feather. X 36. 



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