Some Coccidia of Reptiles Found in North America

Abstract

Up to the present very little or no work has been done on the coccidia of reptiles in North America. Becker (1934) lists all of the species recorded up to that time from reptiles, and in his list only one species of reptile is mentioned which is native to this country. For the last year the author has been examining as many reptiles as possible for coccidia, and the present paper is the report of the material examined and parasites found. In addition to the positive examinations listed under the discussion of each coccidium found, the following reptiles were examined and found negative. (Host determinations according to Ditmars, I936.) I Indigo snake (Drymarchon corals couperi), 2 common hog-nosed snakes (Heterodon contortrix), 12 blue racers (Coluber constrictor flaviventris), I common water snake (Natrix sipedon sipedon), I bull snake (Pituophis sayi sayi), I brown water snake (Natrix taxispilota), 2 plains garter snakes (Thamnophis radix), 2 red-barred garter snakes (Thamnophis sirtalis parietalis), I western diamond-back rattlesnake (Crotalus atrox atrox), I Mojave diamond-back rattlesnake (Crotalus scutulatus), 3 snapping turtles (Chelydra serpentina), 6 western painted turtles (Chrysemys bellii marginata), I Blanding's turtle (Emys blandingii), I box turtle (Terrapene ornata), I collared lizard (Crotaphytus collaris collaris), 14 horned toads of which 2 were (Phrynosoma douglassii hernandesi) and 12 (Phrynosoma solare), I skink (Eumeces septentrionalis), and I swift (Sceloporus undulatus).