506 Wisconsin Academy of Sciences^ Ai^ts, and Letters. 



EXPLANATION OF PLATE XXIV. 



Pig. 1. Dlaptomus saltiUinus : abdomea of female (X 165). 



Pig. 2. Diaptomus dorsalis: abdomen of female (X 165). 



Pig. 3. Diaptomus dorsalis: profile of cephalothorax of female (X 76) . 



Pig. 4. Diaptomus albuquerquensis: abdomen of female (X 100). 



Fig. 5. Diaptomus (ior'saZ*s; terminal segments of right antenna of male 

 (X 290). 



Fig. 6. Diaptomus dorsalis: fifth foot of female (X 290). 



Pig. 7. Diaptomus albuquerquensis : terminal segments of right anten- 

 na of male (X 172). 



Fig. 8. Diaptomus albuquerquensis : fifth feet of male fX 75). 



Fig. 9. Diaptom^us albuquerquensis: spines of left side of last cephalo- 

 thoracic segment of female (X 180). 



Fig. 10. Diaptomus albuquerquensis : dorsal process of last cephalo- 

 thoracic segment of female (X 180) . 



