INFUSORIA. 59 



Epislylis EHRENB. (and Opercularia ejusd.) The animal coni- 

 cal or campanulate, with rigid pedicle, simple, or branched from 

 imperfect spontaneous division. 



Sp. Epistylis flavicans EHKENB., Vorticella umbettaria LAM., ROESEL, Ins. in. 

 Suppl. Tab. c. ; Opercularia articulate, EHKENB., ROESEL, ib. Tab. xcvin. 

 figs. 5, 6, &c. 



B. Loricated. 

 Tintinnus EHRENB. 



Sp. Tintinnus inguilinus, Vayinicola inquilina LAM. 



previously existing, whilst the other has the beginning of its stem solid, and afterwards 

 a canal and streak not continuous with those previously existing. 



In Zoothamnium a continuous canal runs through the stem and all the branches of 

 the colony, and the streak also divides at every fork, so that all the streaks and canals 

 are in connexion, STEIN, op. cit. pp. 82 84.] 



