TABLE showing the total letigfh of the lake, the brook, and the sea 

 lamprey and the larva ; also the distance in thousandths of the total 

 length from the tip of the oral disc or dorsal lip to the base of the 



first dorsal fin, and to the vent ; also from the vent to the tip of the 

 tail. For the purpose of comparing the total length in the various 



forms and the proportions of like parts of the body. 



THE LAKE LAMPREY IN THE SPAWNING SEASON. 



