592 PROTOZOOLOGY 



A^. denodactyli C. and P. (Fig. 280, h). 70-550/^ by 40-1 50m. 



Genus Collinella Chatton and Perard. More elongate than Nicol- 

 lella; uniform ciliation; a groove extends from end to end; cytostome 

 at posterior end of the groove; contractile vacuole terminal; macro- 

 nucleus much elongated, central or posterior; in the colon of Cteno- 

 dactylus gundi. 



C. gundi C. and P. (Fig. 280, c). 550-600m by 100m. 



Genus Buxtonella Jameson. Ovoid; a prominent curved groove 

 bordered by 2 ridges from end to end; cytostome at anterior end; 

 ciliation uniform ; in the caecum of cattle. One species. 



B. sulcata J. (Fig. 280, d). 55-124m by 40-72m. 



References 



Chatton, E. and C. Perard 1921 Les Nicollelidae, infusoires in- 



testinaux des gondis et des damans, et le 'cycle 6volutif des 



cilies.' Bull. biol. Fr. et Bel., Vol. 55. 

 Kahl, a. 1931 Urtiere oder Protozoa. Dahl's Die Tierwelt Deutsch- 



lands. Part 21. 

 Kent, W. S. 1880-1882 A manual of Infusoria. 

 Stein, F. 1867 Der Organismus der Infusionstiere. Vol. 2. 

 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 Observations on some freshwater ciliates. 



II. Paradileptus, n.g. Trans. Amer. Micr. Soc, Vol. 48. 



