92 ZOOLOGY DIRECTIONS 



and have them criticized before incorporating them in your 

 notes. How does the animal crawl? Notes required. 



7. Draw the water vascular system of the disc and one ray. 



REFERENCES 



■Coe, W. R., 1912. Echinoderms of Connecticut. Conn. Geol. 

 and Nat. Hist, Survey, Bull. 19. 



Jennings, H. S., 1907. Behavior of the Starfish Asterias forreri. 

 Uni. Calif. Pub. Zool. 4. 

 Bull. U. S. Fish Coram, for 1899, 103-244. 



Mead, A. D., 1900. The Natural History of the Starfish. 



