610 



ZOOLOGY 



SECT. 



palps ; one or both pairs of maxilla? usually possess palps ; the 

 second pair of maxillae are in some groups more or less united 

 together. In the Chilopoda the first pair of legs of the trunk 

 are specially modified to act as poison-jaws (maxillipedes), by 

 means of which the Centipede inflicts its poisonous bite. 



-brn 



tnal 



slom. 



Fir. 48V.— Scolopendra. (From 

 Cuvier's Animal Kingdom.) 



Fio. 48S.— LithobiUB forficatUS scon from the 

 ventral side. ant. antennae ; brn. brain : cox. up. 

 coxie of ai>pendages ; ft. 15, fifteenth pair of legs ; 

 int. intestine ; mal. Malpighi in tubes ; inxp. 

 maxillipedes ; ne. co. nerve cord ; ft's. oesophagus ; 

 atom, stomach. (From Lcuckart.) 



The number of segments in the body varies from 10 to 173. In 

 the Millipedes the dorsal walls of the segments are very strongly 

 arched ; in the Centipedes the segments are all dorso-ventrally 

 compressed, with distinct tergal and sternal shields separated 

 laterally by intervals of comparatively soft skin on which the 



