Fig. 14.— Diaptomus. Annual distribution, 1894, 1895, 1896. Scale, 1 vertical space = 50,000 Crustacea per sq. m. See p. 319. 
d 
w 
d 
£ 
> 
Kl 
d 
d 
K|, 
O 
o 
►3 
o 
<! 
Trans. Wis. Acad., Vol. XI. Plate XXV. 
