514 Wisconsin Academy of Sciences , Arts, and Letters . 
EXPLANATION OF PLATE XXVIII. 
Fig. 1. Diaptomus Trybomi: abdomen of female. After DeGuerne and 
Richard. 
Fig. 2. Diaptomus Trybomi: fifth feet of male. After DeGuerne and 
Richard’ 
Fig. 3. Diaptomus Trybomi: 23d and 24th segments of right antenna of 
male . After DeGuerne and Richard. 
Fig. 4. Diaptomus Trybomi: fifth foot of female. After DeGuerne and 
Richard. 
