Plate II 



Helophorus lacustris LeConte 



Fig. 1. Left mandible, first stage larva. 



Fig. 2. Right antenna, first stage larva. 



Fig. 3. Right mandible, first stage larva. 



Fig. 4. Right maxilla, first stage larva. 



Fig. 5. Head, dorsal view of the anterior part, first stage larva. 



Fig. 6. Right mesothoracic leg, first stage larva. 



Fig. 7. Larva, dorsal view, first stage. 



Fig. 9. Labium, dorsal view, first stage larva. 



Fig. 10. Egg-case. 



Helophorus sp. ? 



Fig. 8. Egg-case. 



