LARVAL FORMS OF COLEOPTERA 



Plate 45 



Byturidae 



A. Byturus unicolor Say 



B. Byturus tomentosus F. (Denmark) 



C. 

 D. 

 E. 



F. " " 



G. Byturus unicolor 

 H. Byturus tomentosus 

 I. Byturus unicolor 



J. Byturus tomentosus 

 K. Byturus unicolor 

 L. Byturus tomentosus 



M. 



N. Byturus unicolor 



Larva. Lateral view. 



x\nterior part of larva. 

 Ventral view. 



Larva. Dorsal view. 



Antenna. 



Right mandible. 



Cranium. Dorsal view. 



Ocelli. Lateral view. 



Left mandible. 



Head. Ventral view. 



Hypopharyngeal region. 



Leg. 



Ninth and tenth abdomi- 

 nal segments. Lateral 

 view. 



Ninth and tenth abdomi- 

 nal segments. Ventral 

 view. 

 Spiracle. 



176 



