CLASSIFICATION 



43 



Order I. CHILOGNATHA ( = DIPLOPODA) 



Antennae 7 joints, three anterior body rings with one pair of 

 legs to each ring. Posterior rings with two pairs of legs to each. 

 Genital organs opening ventrally on the anterior rings of the 

 posterior part of the body, i.e. on one of the anterior of the 

 segments bearing two pairs of legs ; usually the 7th. 



This Order is divided into eight families : 



Family 1. Polyxenidae. 



Ten body rings, not counting the neck-plate. Thirteen pairs of limbs. 

 Eyes hard to find, on the lateral corner of the head (Fig. 18, p. 37). 



Family 2. Glomeridae. 

 1 1 body rings. 1 7 pairs of legs. Eyes arranged in a row curved outwards. 



FIG. 19. Glomeris marginata. (From C. L. Koch, Die Myriapoden.) 



Family 3. SphaerotJieriidae. 

 12 body rings. 19 pairs of legs. Eyes crowded together in a cluster. 



FIG. 20. Sphaerotherium grossum. (From C. L. Kocli, Die Myriapoden.} 



Family 4. Julidae. 



Body cylindrical. More than 30 body rings. Many eyes crowded 

 together in a cluster. 



FIG. 21. Julus nemorensis. (From C. L. Koch, Die Myriapoden.) 



