EXPLANATION OF PLATE XVIII. 
Process of rearing the full-fed larva and pupa in blocks of 
wood under glass. 
(a) Larve immediately after insertion in artificial grooves in 
wood blocks, 
(b) The same in process of establishing themselves in pupa-cells. 
(b') Showing larva’s method of drawing wood refuse out of the 
burrow. 
(c) Larve forming pupa-cells. 
(d) Showing pupa-cells completed containing larva and imagines. 
(e) Pups, with glass removed. Ventral view. 
(f) Ditto ditto Dorsal view. 
