134 Recall] s of the Indian Museum. [Vol. XV, 



b' Peristome small, near the anterior end ; no fascicle of bristles anteriorly ; 

 macronucleus sing'e. 



a-. Peristome ending in a short recurved cytopharynx ; macronucleus 

 spherical or oval, subcentral ; C. V posterior ; body clongately oval, 

 length = twice the breadth, length 0-07 mm. — O-lIO mm. 



2. C anledunis, Andre. 



b'. Peristome small and conical, at about the junction of the anterior and 

 middle thirds of the body length ; macronucleus oval, posterior ; C. V. 

 at about the junction of the middle and posterior thirds of the body 

 length ; body elongated, length = 2| times the breadth ; length 

 0-05 mm. 



3. G. elomjatus, sp. n. 



b. Peristome in or near the middle of the left side. 



a^. Peristome ending in a long recurved cytopharynx passing to the right side, 

 a^. Surface of the body smooth. 



a^. Body clongately oval, rounded at both ends ; length = twice the 

 breadth ; macronucleus spherical and posterior ; C. V. subcentral. 



■1. C. anodontae, Ehrbg. 



b^. Body broadly oval or rounded with dorsal surface strongly convex and 

 ventral surface flattened ; macronucleus oval, subcentral ; C. V. one, 

 near the macronucleus, with or without accessory vesicles. 



.5. C curies, Engelm. 



b-. Surface of body with longitudinal ridges in its middle two-thirds ; body 

 ovate, narrow anteriorly ; macronucleus reniform ; C. V. posterior and 

 subterminal. 



<). C. inetschnikoffi, Ceites. 



b^. Peristome not ending in a long recurved cytopharynx. 



a-. No adhesive disc ; body oval with a notch in the posterior half of the left 



margin ; body length = 1| times the width ; body length 0-09 mm. ; 



peristome tubular ; macronucleus oval and posterior ; C. V. in posterior 



body-half. 



7. C. lameUidens, sp. n, 



b^. An adhesive disc occupying |rds of the ventral surface ; peristome oval, 

 bt>hind the middle of the left side ; body oval, rounded at both ends ; 

 right side convex ; ventral surface flat and dorsal surface convex ; C. V. 

 in posterior body- half; macronucleus splierical or ovoid. Length 

 0-092— 0-127 mm! 



8. C. discophurus, Mermod. 



LITERATURE. 



1. Andre.— i^ev. Smss. Zool, XVIII, p. 179, 1910. 



2. BiJTSCHLi. — Protozoa, Bioiin's Thier-reich, p. 1720. 



3. Caullery and Mesnil.— C. R. Soc. biol, Pans, LV, 1903, pp. 806-809. 



4. Certes. — Mem. Soc. Zool., France, IV, 1891, p. 6, pi. i. 



5. Claparede. — BeobacM Diyen uber Anat. und Entwicklungsgesch . 



wirbeloser Tiere (Leipzig, 18G1), p. 2. 



6. GouRHET AND RoESER. — Afck. Zool. Erpcrim., 1886, IV, pp. 443-534. 



7. Gruber. — Zeitschr. f. wissenschafl. Zool., XXXIII, 1879, p. 454. 



8. Kent.— ^ Manual of Infusoria, 1880-1882. 



9. Mermod.— Z^ev. .Sim. Zool., XXII, pp. 82-90, 1914. 



10. Schuberg. — Arbeiten aus den Zool.-Zoot. Institute in Wiinberg, 



1889, IX, p. 83. 



