THE MYRIAPODA. 



337 



Scorpions of large size have been found in the carbonifer- 

 ous rocks. 



The Myriapoda. — In these Arthropods, the body is di- 

 vided into many segments, the most anterior of which takes 

 on the characters of a distinct head ; and ahnost all these 

 segments bear articulated limbs terminated by claws. In 

 the Centipedes {^Chilopodci)^ the segments of the body have 

 broad sterna, and the bases of the limbs are far apart ; but, 

 in the Millipedes [Chilognatha)^ the sternal region is rudi- 

 mentary, and the bases of the limbs are close together. 



Fig. 95. — a. Scolopendra horbonica (OhVopoiJa). B. lulus flavozonntiis {Chilo- 



gnatha).^ 



Moreover, in the latter sfroup, the majority of the segments 

 of the body bear two pairs of limbs, and probably represent 

 two somites. 



1 " Eesfiie Animal." Illustrated edition. 



