EXPLANATION OF PLATE XIX. 
Process of rearing full-fed larva and pupa in glass tubes. 
(a) Larva on point of transforming to pupa in wood cylinder in 
glass tube. 
(b) Larvee established in pupa-cells in wood cylinder in glass tube. 
(c) Pupa in act of transforming in wood cylinder in glass tube. 
(d) Pupa lately transformed in wood cylinder in glass tube. 
(e) Pupa in pupa-cell in tube of bark. 
(f) The same individual transformed to imago. 
Nat. size. 
