LARVAL FORMS OF COLEOPTERA 



Plate 67 



Ptilodactylidae 



A. 

 B. 

 C. 

 D. 

 E. 

 F. 



G. 

 H. 



Ptilodactvla serricollis Sav 



Head. Dorsal view. 



Head. Ventral view. 



Right mandible. Dorsal view. 



Right maxilla. Dorsal view. 



Right maxilla. Ventral view. 



Anterior part of larva ; j.s, dis- 

 tended jugular skin ; note retrac- 

 tile diverticle. Lateral view. 



Spiracle. 



Tenth abdominal segment; an, 

 anus; id, spinose inner diver- 

 ticle; od, hairy outer diverticle. 

 Dorsal view. 



Larva ; rd, retractile diverticle. 

 Lateral view. 



Ninth abdominal segment. Dorsal 

 view. 



220 



