100 



ZOOLOGY 



SECT. 



protoplasm, while the outer portion is tolerably firm and resistant. 

 When partially retracted, a spiral ridge is sometimes observable 



c-vac 



^ 4.Dendrocomeres e ,- tL , , 6. S phoero J>hrya 



aRhyncher. S.Epheloto 



7,0|>hryodendron 



9. Dendrosomo 



FIG. 76. Various forms of Tentaculifera. la and b, two species of Podophn/a ; c, a 

 tentacle much enlarged ; 2a, Acineta jolyi ; 2b, A. tuberosa ; in G the animal has captured 

 several small Ciliata ; 8a, a specimen multiplying by budding ; 8b, a free ciliated bud ; 9a, the 

 entire colony ; 9b, a portion of the stem ; 9c, a liberated bud ; a, organism captured as food ; 

 6.c. brood-cavity ; bd. bud ; c. vac contractile vacuole ; /. lorica ; mg. nu. ineganucleus ; 

 mi. nu. micronucleus ; <. tentacle. (After Biitschli and Saville Kent.) 



around the tentacle : this may indicate the presence of a band of 

 specially contractile protoplasm, resembling the axial fibre in the 



