SCALE-INSECTS. a3 
brown, somewhat convex, some bright yellow and often quite 
globular. In spring, examination of a young larva of Cteno- 
chiton viridis—a species very common on the above plants—will 
frequently show, either within the insect, or on its waxy test, or 
between the test and the imsect, minute specks, which under 
a high power of the microscope, prove to resemble the filaments 
composing the brown or the yellow spots just mentioned. On 
turning over one of the brown fungi, or on pulling it to pieces, 
the dead body of a young Céenochiton or Lecanium larva will 
always be found in the middle. Apparently this brown fungus 
does not attack any but young larve; but the bright yellow 
fungus will be found filling the bodies also of the females in 
the second stage, and the globular portion of the fungus will 
stand out above them. These fungi are not of the same 
genus as Hmpusa, the fungus which so frequently kills the 
house-fly ; but they seem to act in: much the same way within 
the insect. . 
Probably a good many of the Lecano-diaspide are preyed on 
and destroyed by these fungoid parasites, of which figures are 
given in Plate xxiii. 
