512 Wisconsin Academy of Sciences, Arts, and Letters. 



EXPLANATION OP PLATE XXVII. 



Fig. 1. Diaptomus franoisoanus: fifth foot of female. After DaGuorne 



and Richard. 

 Fig. 2. Diaptomus franciscanus: fifth feet of male. After DeGuerae 



and Richard. 

 Fig. 3. Diaptomus stagnalis : fifth foot of female. After Forbes. 

 Fig. 4. Diaptomus Lintoni: fifth foot of female. After Forbes. 

 Fig. 5. Diaptomus Lintoni: fifth feet of male. After Forbes. 

 Fig. 6. Dlajitomus stagnalis: fifth feet of male. After Herrick and 



Turner. 

 Pig. 7. Diaptomus Lintoni: terminal segments of right antenna of male 



After Forbes. 

 Fig. 8. Dlap>tomus stagnalis : tema,le. After Herrick and Turner. 



