BIOLOGY FOR YOUNG BEGINNERS. 



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thorax or head breastplate. The large piece of shell, with the seam 

 that covers the back and sides of the cephalo-thorax, is called the 

 carapace or shield (Fig. 15). It is the front sharp point of this shield 

 (carapace) that is called the frontal spine or beak. Behind the head 

 and breast (cephalo-thorax) lies the third division of the body the 



Fig. 15. 



abdomen which is made up of seven pieces or joints. The first six 

 joints are called somites (Fig. 15) or bodies, and the last joint or tail- 

 piece is called a telson, which means end. So the body of the lobster 

 is made up of six somites and a telson. Each body-piece has a pair 

 of soft-jointed paddles on its under side (Figs. 15, 16), and these are 



