100 



ZOOLOGY 



SECT. 



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

 When partially retracted, a spiral ridge is sometimes observable 



3.Rhy 



-1 v w 



*•* 4.Dendrocomeres r -.. , \ 6. S pha«r obhrya 



nchero _ 5. EbheMa r ' 



7.0(>hpyodenclron 



a.Ef)heloha 



9. Dendrosoma 



Fig. 70. —Various forms of Tentaculifera. la and 6, two species of Podophrya; c, a 

 tentacle much enlarged ; Sa, Acineta jolyi ; 2b, A. tuberosa ; in 6 the animal has captured 

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

 entire colony ; 96, 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. meganucleus ; 

 mi. nu. micronucleus ; t. tentacle. (After Btitschli and Saville Kent.) 



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

 specially contractile protoplasm, resembling the axial fibre in the 



