COCHINEAL 



703 



is very large, the larvae are borne (Fig. 308), and these usually are 

 seen to be in several stages of development (Figs. 309 and 310). 



FIG. 309. Microphotograph of several of the numerous larvae found in the 

 mother insect and in which are to be seen the characteristic beaks (6) ; and 

 the three pairs of legs (/) still enclosed in the sac-like membrane of one of the 

 larvae. 



Constituents. From 9 to 10 per cent of a glucosidal, 

 principle, carminic acid (carmine red). It is methyldioxy-naphtho- 



