60 



ZOOLOGY 



SECT. 



i 





71- 





FIG. 42. Aulactinium actinastrum. c. calymna ; km. central capsule ; n. nucleus ; op- 

 operculum ; ph. phseodium. (From Lang's Comparative Anatomy, after Haeckel.) 



cent, caps 



Fie. 43. Actinomma asteracanthion. A, the shell with portions of the two outer 



spheres broken away ; J5, suction showing the relations of the skeleton to the animal ; 

 Cent, i-n./ix. central capsule ; ex. caps, pr, cxtra-caiisubu- jirntujilasni ; mi. nucleus ; sk. 1, outer, 

 sk. 3, middle, sk. J, inner Fphere of skeleton. (From ijiitschli's Protozoa, after Haeckel and 

 Hertwig.) 



