ARTHROPODA. 



237 



of extinction as a food animal. Measures are now being 

 taken to protect the adults from overfishing and to hatch 

 the young in protected places; and it is hoped that the 



FIG. 81. The adult American lobster (Homarus americanus) . Herrick. 



Questions on the Figure. What body regions are to be distin- 

 guished in the lobster? Compare by actual measurement the size of 

 the crushing claw compared with that of the body. How many 

 segments in the abdominal region? Compare the lobster with the 

 crab (Fig. 84). 



