Fig. 
1. Alonopsis latissima. Male. 
2. Alona glacialis? Female. 
3 ‘¢ gilacialis? Male. 
Alona glacialis (?) var. tuberculata. 
4. Lateral view. 
5. Post-abdomen. 
Labrum. 
Antenna, setose branch. 
6 
(¢ 
8. Alona glacialis. Antenna. 
9. Alonopsis latissima. Feet. 
10,11. Alonella excisa. Details of shell sculpture. 
Pleuroxus denticulatus. 
10a. Outline of eqhippium. 
12. Female. 
13. Common variety. 
14. Alona glacialis (?) var. tuberculata. 
