CENTIPEDES AND MILLIPEDES 



367 



Second Class of Tracheata Antennata.— Myriopoda. 

 Centipedes and Millipedes 



The centipedes and millipedes, which are grouped 

 together in the class Myriopoda, are usually elongated, 

 somewhat vermiform animals, with a distinct head and a 



IVA 



Fig. 207. — Mouth-parts and poison claws of a centipede. 

 — From a Specimen. 



I. Upper lip or labrum. II. Mandibles. III. First maxillae. IV. Palp (exopodite) 

 of second maxilla. IVa. Inner portion (endopodite) of second maxilla. 

 V. Poison claws or first pair of legs. VI. jpasal plate or sternal region of 

 first trunk segment. 



very uniform segmented trunk. The head bears eyes 

 (groups of eye-spots, not compound eyes like those of 

 insects, except in Scutigera), jointed antennae, and two or 

 three pairs of jaws. The segments of the trunk bear six- or 

 seven- jointed legs with terminal claws, very similar through- 

 out. "The nervous system, the tracheae, the heart, the ex- 

 cretory tubules, etc., are like those of Insects. It cannot 



