Eimeria montanaensis n. sp. and E. ernesti n. sp. (Protozoa,Eimeriidae) from the Rocky Mountain Goat Oreamnos americanus*

SYNOPSIS. Oocysts of Eimeria oreamni, E. montanaensis n. sp. and E. ernsti n. sp. were present in a fecal sample collected from a male Rocky Mountain goat Oreamnos americanus in Ravalli County, Montana. Oocysts of E. oreamni were nearly identical to those originally described from this host. Oocysts of E. montanaensis were 15-23 by 13-19 μ (mean 18.9 by 15.2 μ), with sporocysts 8-12 by 4–7 μ(mean 9.9 by 5.2 μ). Oocysts of E. ernsti were 28-37 by 19-26 μ (mean 32.9 by 23.0 μ), with sporocysts 14-20 by 6-9 μ (mean 16.7 by 7.3 μ). A distinct micropyle and micropylar cap were present in E. ernsti.