Class 3. MYRIAPODA. Tracheata with numerous similar leg-bearing appendages and with one pair of antenna;. 

 Tracheal stigmata regularly and segmentally arranged. 



Order i. CHILOFODA, with three pairs of jaws (mandibles and two pairs of maxillae) and a pair of poison 

 claws. One pair of legs to each body segment. Ex. Lithobius, Scolopendra. 



Order 2. DIPLOPODA, with two pairs of jaws (mandibles and maxillae). Body consisting of numerous double 

 segments. Ex. Julus. 



