JXONTISPIECE 





A COLLARED MONAD. _. MONOSIGA GRACILIS, S. K. 



Artificially fed. with Carmine , The- Arrows denote the direction, of the current', educed 

 by the. rotatory- motion, of the, Flag Mum-, and the course -taken, by the Food- particles on- 



striking against anil adheruig to the extended Colla-r . c.l. Collar, ft. _Flaqf/ l:iin . 



$9- F<* - " Eiu.lvpla.st orS-iiclrns. c.v. Contractile ve 



