BEETLES. 
2 ? 
tracheae. There are many species of luminous 
beetles, some living in Mexico and Central and 
South America give brilliant light and are used 
instead of lamps. 
Fig. 14. —Some Long-horned Beetles. 
2. The scarabs. These are the giants of the 
beetle creation. The sacred scarab of the ancient 
Egyptians and the giant scarab of South America 
are the most noted examples. This South Amer¬ 
ican beetle is said to measure six inches in length 
