756 PROTOZOOLOGY 



Lieberman, P. R. : (1929) Ciliary arrangement in different species of 



Paramecium. Tr. Am. Micr. Soc, 48:1. 

 Loefer, J. B. : (1936) Bacteria-free culture of Paramecium bursaria 



and concentration of the medium as a factor in growth. J. Exper. 



Zool., 72:387. 

 Lucas, Miriam S.: (1932) A study of Cyathodinium piriforme. 



Arch. Protist., 77:64. 

 (1932a) The cytoplasmic phases of rejuvenescence and fis- 

 sion in Cyathodinium piriforme. II. Ibid., 77:406. 

 Lynch, J.: (1929) Studies on the ciliates from the intestine of 



Strongylocentrotus. I. Univ. California Publ. Zool., 33:27. 



(1930) II. Ibid., 33:307. 



Michelson, E.: (1928) Existenzbedingungen und Cystenbildung bei 



Paramecium caudatum. Arch. Protist., 61:167. 

 Mohr, J. L. and LeVeque, J. A. : (1948) Occurrence of Conidophrys, 



etc. J. Parasitol., 34:253. 

 MiiLLER, W.: (1932) Cytologische und vergleichend-physiologische 



Untersuchunger liber Paramecium multimicronucleatum und P. 



caudatum, etc. Arch. Protist., 78:361. 

 Nie, D.: (1950) Morphology and taxonomy of the intestinal Proto- 

 zoa of the guinea-pigs, Cavia porcella. J. Morphol., 86:381. 

 Parker, R. C: (1926) Symbiosis in Paramecium bursaria. J. Exper. 



Zool, 46:1. 

 Powers, P. B. A. : (1933) Studies on the ciliates from sea urchins. I. 



Biol. Bull., 65:106. 



(1933a) II. Ibid., 65:122. 



(1935) Studies on the ciliates of sea urchins. Papers Tortugas 



Lab., 29:293. 

 Pringsheim, E. G.: (1928) Physiologische Untersuchungen an 



Paramecium bursaria. Arch. Protist., 64:289. 

 Reynolds, B. D.: (1936) Colpoda steini, a facultative parasite of the 



land slug, Agriolimax agrestis. J. Parasitol., 22:48. 

 Stranghoner, E.: (1932) Teilungsrate und Kernreorganisations- 



prozess bei Paramecium multimicronucleatum. Arch. Protist., 



78 * 302 

 Stuart, C. A., Kidder, G. W. and Griffin, A. M.: (1939) Growth 



studies on ciliates. III. Physiol. Zool., 12:348. 

 Taylor, C. V. and Furgason, W. H.: (1938) Structural analysis of 



Colpoda duodenaria sp. nov. Arch. Protist., 90:320. 

 - — - — and Strickland, A. G.: (1939) Reactions of Colpoda duo- 

 denaria to environmental factors. II. Physiol. Zool., 12:219. 

 Turner, J. P.: (1937) Studies on the ciliate Tillina canalijera n. sp. 



Tr. Am. Micr. Soc, 56:447. 

 (1940) Cytoplasmic inclusions in the ciliate Tillina canalij- 

 era. Arch. Protist. , 93 : 255. 

 Wenrich, D. H.: (1926) The structure and division of Paramecium 



trichium. J. Morphol. Physiol., 43:81. 

 (1928) Paramecium woodruffi n. sp. Tr. Am. Micr. Soc, 47: 



256. 

 (1928a) Eight well-defined species of Paramecium. Ibid., 47: 



275. 



