EXPLANATION OF PLATE XVI. 
(a) Abnormal. Larve established in pupa-cells excavated in felled 
tree lying in a horizontal position. 
(b) Normal. Larva resting in pupa-cell excavated in standing 
tree. 
(c) Normal. Pupa ditto 
(d) Normal. The same individual transformed to imago. These 
pieces of wood were split and the insects photographed 
without having been disturbed from their natural positions. 
Nat. size. 
