EXPLANATION OF PLATE XXII. 
Larva of Hectarthrum trigeminum. 
Mandible of same larva. 
Antenna of same larva. 
Head of same larva from front. 
Maxillae and labium of same larva. 
Larva of Cardiaspis pisctformis from below. 
Anterior part of head of same larva from below. 
Anterior part of head of same larva from above. 
Pupa of same species from below. 
Adult of same species from below. 
Adult of same species from above. 
