44 



MVRIAPODA 



Family 5. Blanjulidae. 



Thin cylindrical body -with more than 30 body rings. 

 absent or in a simple row beneath the edge of the forehead. 



Eyes either 



Fig. 22. — Blanjidus rjutlidatus. (From C. L. Koch, Die Myriapoden.) 



Family 6. Chordeuvudae. 



Resemble the Polydesmidae (Fam. 7), but the head is longer and less rounded 

 in the forehead. The antennae are placed more at the side of the head. 

 Eyes small and numerous, in a cluster. Body rings always 30 (Fig. 16). 



Family 7. Polydesmidae. 



Body cylindrical, with a lobe or keel on the posterior part of the upper 

 surface of the body ring. Always 1 9 body rings. No eyes. 



Fig. 23. — Polydesmus coUaris. (From C. L. Kocli, Die Myriapoden.) 



Family 8. Pohjxoniidae, 



Body with varying number of rings arched transversely downwards and 

 sharp at the sides. The anterior part of the ring somewhat hidden. The 



Fig. 24. — Pohj^oiiium germanicum. (From C. L. Kocli, Die Jlyricqmden.) 



eyes in a simple row. The stigmata very small and placed near the lateral 

 corner of the body ring. Head small in proportion to the body. 



Order II. Chilopoda (or Syngnatha). 



Antennae with many joints, at least 14. Only one pair of 

 legs to each hody ring. The genital opening on the last ring 

 of the body. Bases of the legs widely separate. 



There are four families in this Order : — 



