PLATE X. 

 Dttiscidae, Gteinidae, Hydeophilidae. 



All the figures are by J. Henry Blake and are magnified twenty diameters. 

 Fig. 1. (16905) Hydroporus sectus. 



2. (16902) Hydroporus inuadatus. 



3. (16903) Hydroporus inanimatus. 

 i. (16912) Cymbiodyta exstincta. 

 5. (16913) Gyrinus confinis LeC. 



