100 



ZOOLOGY 



Geoph'ilus ' includes relatively slow-mo\-ing species, often 

 attaining great length, having up to two hundred segirients to 

 the trunk (Fig. 101 ) . The species are common in 

 Europe and America. The}' live mostly under 

 stones. There is a European species, Geophihis 

 electricus, which is phosphorescent and shines 

 in the dark like a glow-fly. 



The INIilhpedes, or Diplopoda, have, as the 



name implies, two pairs of legs to each segment 



of the trunk. They are usually more or less 



cylindrical animals. The antennse are rather 



short, and the jaws, which are somewhat shorter 



than the centipede's, lack the poison-glands of 



101 — c ^^^"^^ group. Accordingly we find the millipedes 



ophiius iitor- feeding not upon animal but upon vegetalile 



size^ Photo suljstances, for the chewing of which their mouth 



by W. H. c. p. parts are well adapted. The follo-\dng milhpedes 



representing two families, can be found under boards in almost 



any greenhouse. 



Julus is commonly kno^^ii as the galley -worm (Fig. 102). 

 The meml^ers of this genus crawl rather 

 slowly, and when at rest coil the body. 

 When disturbed, they gi^'e out a strong 

 odor through lateral openings of the liody. 

 They feed on dead snails and earthworms ; 

 some species, on ears of Indian corn or 

 strawberries. Their eggs are laid in holes 

 in the ground in the spring; consequently they may be easily 

 dug up at this season. 



Pol'ydesmus - includes somewhat flattened species, which, 



^ (/e, the earth ; pjiilco, to lo\'e. - polys, iniu-h; dcs/nos, baud. 



Fi(i. 102. — Julus cana- 

 th lists. Nat. .s'zc. 



Photo, by W. H. C. P. 



