Eimeria and Sarcocystis in Raccoons in Illinois1

Abstract
E. nuttalli oocysts were found in 58% (21/36) and E. procyonis oocysts in 25% (9/36) of raccoons P. lotor in Illinois and sporocysts of Sarcocystis sp. in 17% (2/12) of other raccoons in Illinois. The oocysts of E. nuttalli were ellipsoidal to ovoid, 15-21 .times. 12-17 .mu.m, with a 1-layered, smooth, colorless wall. The oocysts of E. procyonis were 22-28 .times. 18-22 .mu.m, with a rough, striated, brownish, 2-layered wall. The sporulated sporocysts of Sarcocystis sp. were 11-13 .times. 8-10 .mu.m. Attempts to infect baby pigs by feeding them sporocysts of Sarcocystis sp. from the raccoon failed.