HOLOTRICHA 579 



References 



HsiUNG, T. S. 1930 A monograph on the Protozoa of the large in- 

 testine of the horse. Iowa St. Coll. Jour. Sci., Vol. 4. 



Kahl, a. 1930 In Dahl's Die Tierwelt Deutschlands. Part 18. 



KiRBY Jr., H. 1934 Some ciUates from salt marshes in California. 

 Arch. f. Protistenk., Vol. 82. 



MacLennan, R. F. 1935 Observations on the life cycle of Ichthy- 

 ophthirius, a ciliate parasitic on fish. Northwest Science, Vol. 9. 



1937 Growth in the ciliate Ichthyophthirius. I. Maturity 



and encystment. Jour. Exper. Zool., Vol. 76. 



NoLAND, L. E. 1925 A review of the genus Coleps with descriptions 

 of two new species. Trans. Amer. Micr. Soc, Vol. 44. 



1937 Observations on marine ciliates of the Gulf coast of 



Florida. Ibid., Vol. 56. 



Penard, E. 1922 Etudes sur les Infusoires d'eau douce. Geneve. 



Roux, J. 1901 Faune infusorienne des eaux stagnantes de environs 

 de Geneve. Mem. cour. fac. sci. I'Uni. Geneve. 



Stokes, A. C. 1888 A preliminary contribution toward a history of 

 the freshwater Infusoria of the United States. Jour. Trenton 

 Nat. Hist. Soc, Vol. 1. 



Wenrich, D. H. 1929 The structure and behavior of Actinobolus 

 vorax. Biol. Bull., Vol. 56. 



