A high resolution image of the oral ribs with their microtubular ribbons and alveolar tubes pass through the cytostome to the cytopharynx and nascent vacuole region. In this view the left wall of the buccal cavity is in grazing section so the partial layer of microtubules appears on both sides of the cytostome. The only membrane not associated with alveoli is that at the beginning of the cytopharynx. TEM taken on 8/29/67 by R. Allen with Philips 200 operating at 60kV. Neg. 25,700X. The raw film was scanned with an Epson Perfection V750 Pro. This image is best used for quantitative analysis.