1929] The Biology of Two Cixiid Plant-Hoppers 287 
1. Mnemosyne cubana. Antepenultimate nymph. 
2. Mnemosyne antenna of antepenultimate nymph. 
3. Mnemosyne antenna penultimate nymph. 
4. Mnemosyne antenna last nymph. 
5. Mnemosyne penultimate inster nymph. 
6. Mnemosyne right hind-wing pad of last instar nymph. 
7. Mnemosyne first left wax-plate of last instar nymph. 
8. Bothriocera signoreti, last instar nymph, outer view of first left leg. 
9. Bothriocera signoreti first left wax-plate. 
