Two Flukes, Phagicola macrostomus n. sp. and Phagicola byrdi n. sp., from the Turkey Vulture (Trematoda: Heterophyidae)

Diagnosis. Small, spatulate worms about 0.5 mm long and half that broad. Body divided by a slight constriction at the level of the acetabulum. All but the posterior surface covered by semicircular cutaneous scales. Oral sucker diameter about one-fifth of body length, with no dorsal anterior prolongation. Acetabulum slightly more than one-half the diameter of oral sucker, center just anterior to middle of worm. Eighteen thick, blunt-pointed oral spines evenly spaced in a single row around oral opening, length about one-third of oral sucker diameter but somewhat variable. Oval diverticulum thick-walled, straight, overlapping pharynx for short distance. Prepharynx nearly as long as oral diverticulum. Pharynx muscular, twice as long as wide, divided by circular constriction. Esophagus shorter than pharynx. Ceca