1. Bailey, W. S., and W. H. Krull, 1943. Personal communication.
2. Christenson, R. O., 1939–1944. Alabama Agr. Exp. Sta. Ann. Rpt., Auburn, Alabama.
3. Check list of parasites of domestic animals reported in Georgia;Cooperider;Vet. Med.,1952
4. Check list of the internal and external animal parasites of domestic animals in North America;Dikmans;Amer. J. Vet. Res.,1945
5. Comparative studies on the ova of some nematodes parasitic in chickens;Earl;Alabama Acad. of Sci.,1940