100 



ZOOLOGY 



SECT. 



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

 When partially retracted, a spiral ridge is sometimes observable 



l.Podophrya 



4.Dendrocometes c r- ,. 6. S f>haer obhrya 



3.Rhynchero 5. Ephelota 



! C VCU) 



&<M/M. 



, , \JBnfm\ H^W 



wii- 



! 



T.Obhryodendron 



c.wto 



8.Ef>helora 



9, Dendrosomo 



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

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

 several small Ciliata ; 8a, a specimen multiplying by budding ; 6'fc, a free ciliated bud ; 9a, the 

 entire colony ; 9b, a portion of the stem ; He, 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 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 



