Smithsonian Report, 1917. — Safford. 



Plate 41, 



Scale Insects, or Cocci dae, Margarodes formicarum, Called Ground-Pearls 

 from their Resemblance to Opalescent Beads of Gold. 



Collected alive in black soil in fissure of oolitic limestone near Park Lodge by C. E. Hosier. Natural size. 



