754 PROTOZOOLOGY 



of the host, they become attached through their cytopharynx (c) and 

 lose their cilia; during the development into the cucurbitoid mature 

 stage (/, g), the organism passes through lacrymoid (d) and spheroid 

 (e) stages; on freshwater amphipods and isopods (Chatton and Lwoff, 

 1934, 1936). 



C. pilisuctor C. and L. (Fig. 322). Lacrymoid trophont 12-1 5m by 

 6-7/*; cucurbitoid forms 50-60^ long; free-swimming tomites 12— 14/i 

 in diameter by 6-7/z high, ciliated and possess a comparatively long 

 cytopharynx; nourishment of trophont through host's hairs; in 

 amphipods and isopods, especially on Corophium acherusicum, 

 France. Mohr and LeVeque (1948) found it on the wood-boring iso- 

 pods, Limnoria lignorum and Corophium acherusicum in California. 



References 



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(1945) Some factors affecting excystment in the ciliate 



Tillina magna. Physiol. Zool., 18:80. 



(1946) History of the nuclei of Tillina magna during divi- 

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(1946a) Tillina magna: etc. Biol. Bull., 91:256. 



Bozler, E.: (1924) Ueber die Morphologie der Ernahrungsorganelle 

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Bullington, W. E. : (1930) A further study of spiraling in the ciliate 

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Burt, R. L.: (1940) Specific analysis of the genus Colpoda with spe- 

 cial reference to the standardization of experimental material. 

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— , Kidder, G. W. and Claff, C. L.: (1941) Nuclear reorgani- 

 zation in the family Colpodidae. J. Morphol., 69:537. 



Campbell, A. S.: (1929) The structure of Isotricha prostoma. Arch. 

 Protist., 66:331. 



Chatton, E. and Lwoff, A.: (1934) Sur un infusoire parasite des 

 poils secreteurs des crustaces Edriophtalmes et la famille nou- 

 velle des Pilisuctoridae. C. R. Acad. Sc, 199:696. 



(1936) Les Pilisuctoridae. Bull. biol. France et Belg., 



70:86. 



Claff, C. L., Dewey, Virginia C. and Kidder, G. W.: (1941) 

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Cleveland, L. R. : (1927) The encystment of Paramecium in the 

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Curtis, W. C. and Guthrie, Mary J.: (1927) Textbook of general 

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