94 ARTHROPODA. 



Class III. Protracheata (Onychophora, 

 Peripatidea). 



Tracheates with vermiform body, two antenn.ce, a pair of jaws, a pair 

 of oral papillae, and numerous pairs of imperfectly jointed limbs. 

 Stigmata numerous and scattered. Each foot-bearing segment with a 

 pair of nephridia. A single genus, Peripatus, which appears to be 

 most closely allied to the Myriapods. 



