July, 1914 
ON THE OOLOGY OF THE PYGOPODES 
173 
Fig. 51. Nos. 5 AND (>, EGGS OF Mexican Grebe [Colymbus d. brachy- 
pterus) \ NOS. 7 and 8, Eared Grebe (C. n. ca!iforniciis)\ nos. 9 and 
10, PiED-BiELED Grebe {Podilymhus podiceps)\ ale natural sizb;. 
