Report U. S. F. C. 1898. (,To face page LXXII.) 



Plate XVI. 



20. Double-headed whitefish fry. 



21 Curved spine, a common deformity of whitefish fry. 22. Whitefish fry just hati-iii <l nu._-. -.ved. curved : 



23. A common d 



lity of whitefish fry. .?4 Four-eyed whitefish fry. 



DEVELOPMENT OF THE WHITEFISH EMBr^YO. 



