Histiobalantium or so it appears to be. The buccal cavity located about mid way of the cell with a undulating membrane is hard to track down both in books and on the PIS. However, I think this is a close match. The numerous stiff cilia and the presence of the symbionts seem to fit, along with the location of the buccal cavity, shape and general appearance of the organism, and membrane structure. If indeed this is Histiobalantium, then I am afraid I will have to stick my nose in the air and say that my image looks much better than what is pictured on the Protist Server.
Histiobalantium
Sony DSC-P200
Manual Mode
1/200 sec. @ f/2.8 ISO 100
Zeiss Axiostar Plus 40X/0.65 CP Achromat
Brightfield halogen illumination w/clear blue filter and white diffuser
Stitch and Processing: Photo Impact 6