igig.] E. K. Ghosh: Studies on Infusoria. 43 



68. Body cylindrical ; no tricho- 

 cysts ; no transverse lines, 

 fl^. Cytostome terminal ; cy- 

 tophar\Mix short and 

 funnel-shaped, 

 a"'. Numerous macronuclei; 

 length = 5 times the 

 breadth ... ... H. obloiiga, Maupas. 



i'O. Single oval macronucle- 



us; length > breadth. H . marina, Ouenn. 

 b^\ Cj'tostome lateral, near 

 anterior pole ; cytophar- 

 3-nx extending to middle 

 of the body ; a single ellip- 

 tical macronucleus ... H. edentata, Schout. 

 b'. C.V. 2, postero-lateral ; macronucleus big and 

 oval ; cytopharynx absent ; body spherical to 

 elliptical ... ... ... ... H. liaplostonia, .\ndre. 



LITERATURE. 



I. Andre. — Rev. Suiss. Zool. Vol. XXIV (1916). 



z. Bhatia. — Rec. Ind. Mus. Vol. XII, p. 177 (1916). 



3. Hamburger and Buddenbrock. — Nordisches Plankton, igii. 



4. Kent. — A Manual of Infusoria, 1880-1882. 



5. Schewiakoff. — Mem. Ac. St. Petersbg. Vol. VII (i), p. 1:5. 



6. Schouteden. — Ann. Biol. Lacustr. Vol. I. p. 389 (1906). 



