296 
Wisconsin Academy of Sciences, Arts , and Letters. 
EXPLANATION OF PLATE XXXII. 
Fig. 1. C. americanus Marsh (?). Caudal stylet X 295. No. 1499. 
Fig. 2. No. 1499, external armature terminal joint of inner branch of 
4th swimming foot X 295. 
Fig. 3. C. americanus Marsh (?). Caudal stylet X 295. No. 1482. 
Fig. 4. No. 1482, external armature terminal joint of inner branch of 
4th swimming foot X 295. 
Fig. 5. C. americanus Marsh (?). Caudal stylet X 295. No. 566. 
Fig. 6. No. 566, external armature terminal joint of inner branch of 
4th swimming foot X 295. 
Fig. 7. C. americanus Marsh (?). Caudal stylet X 295. No. 1008. 
Fig. 8. No. 1008, external armature terminal joint of inner branch of 
4th swimming foot X 295. 
Fig. 9. C. americanus Marsh (?). Caudal stylet X 295. No. 269. 
Fig. 10. No. 269, external armature terminal joint of inner branch of 
4th swimming foot X 295. 
Fig. 11. C. americanus Marsh (?). Caudal stylet X 295. No. 536. 
Fig. 12. No. 536, external armature terminal joint of inner branch of 
4th swimming foot X 295. 
