Plate VI 



Hydrophilus obtusatus Say 



Fig. 1. Right mesothoracic leg, first stage larva. 



Fig. 2. Left mandible, first stage larva. 



Fig. 3. Right mandible, first stage larva. 



Fig. 4. Egg-case with leaf wrapped about it. 



Fig. 5. Right maxilla, first stage larva. 



Fig. 6. Labium, dorsal view, first stage larva. 



Fig. 7. Anterior region of head, dorsal view, first stage larva. 



Fig. 8. Full-grown larva, dorsal view. 



Fig. 9. Right antenna, first stage larva. 



Fig. 10. Egg case enlarged and without leaf. 



