Figure 19; "Image of Cercaria caribbea LXVIII; a. Drawing of cercaria structure b. Cercaria stained with 0.5% neutral red c. Sporocyst stained with 0.5% neutral red d.–g. Images of Scanning Electronmicroscope Abbreviations: os – oral sucker, p – pharynx, vs – ventral sucker eb – excretory bladder, ta – tail, spo – sporocyst (scale a, b = 100 µm, c = 10 µm)."