Euplote - is flattened dorsoventrally and has a different ciliature on the two surfaces. Ventral surface- highly specialized ciliature for crawling. Dorsal surface- convex and ridged. directs food to a buccal cavity. (Euplotes, 2005)

Lecane rotifer - minute, bilaterally symmetrical, unsegmented. The tail looking part is called the corona, used for food gathering and movement. The head part has a set of jaws called trophi. This one is actually dead. (Wallace, 2005)

Paramecium - ciliated protozoa, bacteria eater. Has uniform cilia over the cell surface. Eats algae by a oral apparatus that is shaped like a funnel. (Aufderheide, 2005)

Reference: 

Patterson D. Free-Living Freshwater Protozoa- A Colour Guide. London. Manson Publishing. 1995. p. 124, Fig. 259 Euplote. Fig. 346-347 Paramecium

"Euplotes (Dorsoventrally-flattened Ciliates)." Encyclopedia of Life Sciences. Vol. 6. Chichester, United Kingdom: Wiley, 2005. 642-648. 20 vols. Gale Virtual Reference Library. Gale. Univ of Tennessee Library Serials Dept. 20 Nov. 2010 
<http://find.galegroup.com/gvrl/infomark.do?&contentSet=EBKS&type=retrieve&tabID=T001&prodId=GVRL&docId=CX2846500796&source=gale&userGroupName=knox61277&version=1.0>.



Wallace, Robert. "Rotifera." Encyclopedia of Life Sciences. Vol. 16. Chichester, United Kingdom: Wiley, 2005. 630-633. 20 vols. Gale Virtual Reference Library. Gale. Univ of Tennessee Library Serials Dept. 20 Nov. 2010 
<http://find.galegroup.com/gvrl/infomark.do?&contentSet=EBKS&type=retrieve&tabID=T001&prodId=GVRL&docId=CX2846502113&source=gale&userGroupName=knox61277&version=1.0>.

Aufderheide, Karl, and Christopher Janetopoulos. "Paramecium." Encyclopedia of Life Sciences. Vol. 13. Chichester, United Kingdom: Wiley, 2005. 684-689. 20 vols. Gale Virtual Reference Library. Gale. Univ of Tennessee Library Serials Dept. 20 Nov. 2010 
<http://find.galegroup.com/gvrl/infomark.do?&contentSet=EBKS&type=retrieve&tabID=T001&prodId=GVRL&docId=CX2846501726&source=gale&userGroupName=knox61277&version=1.0>.