LARVAL FORMS OF COLEOPTERA 



Plate 23 



Hijdroph ilidae-HydropMlinae (A) , 

 Hydrophilidae-Hydrohiinae (B, G, H), 

 Hijdroph Uidae-Sphaeridiinae (C-F, I-P) 



A. Hj^drous piceus L. (Denmark) : Larva. Dorsal view. 



B. Paracymus aeneus Germ. (Den 



mark) 



D. 

 E. 

 F. 

 G. 



H. 



I. 

 J. 

 K. 



Anterior part of larva, 

 view. 



Chaetartria seminulnm Herbst 

 (Denmark) 



Paracymus aeneus 



Chaetartria seminnlnm 



Coelostoma orbicnlare F. (Den- 

 mark) 



L. 

 M. 



N. 

 0. 



Dorsal 



Larva. Lateral view. 

 Larva. Dorsal view. 

 Head. Dorsal view. 

 Head. Ventral view. 

 Posterior part of larva. Dorsal 



view. 

 Leg. 



End of body. Dorsal view. 

 Leg-. 



Anterior part of head. Dorsal 



view. 

 Head. Dorsal view. 

 Head. Ventral view. 

 Larva. Dorsal view. 

 Anterior part of larva. Lateral 



view. 

 Prothorax and mesothorax. 



Ventral view. 



132 



