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ey 
B. L. BHatta : Ciliate Protozoa of Lahore. 183 
Family PARAMAECINA. 
Genus Paramaecium, Hill. 
Paramaecium caudatum, Ehrbg. 
In pond water and infusions of dry leaves. 
Family PLAGIOTOMINA. 
Genus Spirostomum, Ehrbg. 
Spirostomum ambiguum, Ehrbg., var. minor, Eyf. 
In large numbers among the roots of Eichhornia growing in 
an aquarium. Length about 765 u. 
REFERENCES TO LITERATURE. 
Butschli, O. 
Doflein, F. 
Eyferth, B. 
Kent, S. 
Minchin, E. 
Protozoa. In Bronn’s Klassen und Ordnun- 
gen des Thwer-Reichs, Vol. I, Dritte Abtheilung. 
(Leipzig u. Heidelberg: 1889.) 
Lehrbuch der Protozoenkunde. (Jena: 
1909.) 
Hinfachste Lebensformen der Tier- und Pflan- 
zenreiches. Vierte Auflage von W. Schoenichen 
und A. Kalberlah. (Braunschweig: 1909.) 
.. A Manual of the Infusoria. (London: 
1880-1882.) 
A... An Introduction to the study of the Pro- 
tozoa. (London: 1912.) 
In addition to the works cited above, current literature in 
Archiv fur Protistenkunde, Journal of the Royal Microscopical 
Society, etc., have also been consulted. 
