F 
Eris hor: sia) 
Diaptomus albuquerquensis Herrick. 
Fifth feet of the male. 
Extremity of the right antenna of the male. 
Fifth foot of the female in one-jointed condition. 
Diaptomus ashlandi Marsh. 
Extremity of the right antenna of the male. 
Fifth foot of the female. 
Fifth feet of the male. 
Diaptomus novamexicanus Herrick. 
Female, from above. 
Portion of the right antenna of the male. The hyaline plate on 
the antepenult segment is incorrectly represented as depressed 
in the middle. 
Fifth foot of the female. 
Fifth feet of the male. 
Cyclops ater Herrick. Fifth foot. 
* ater Herrick. Fourth foot. 
* capilliferus Forbes. Antenna. 
