418 Ciliophora 



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Fig. 7. 53. AD. Penetration of a ciliate host by Endosphaera engel- 

 manni; stained preparations; x600 (after Noble). E. Anarma brei'is Good- 

 rich and Jahn; body about 125x75^ (after G. & J.). F. Cometodendron 

 digitatuin Swarczewsky, xl65 (after S.). G. AUantosoma intestinalis Gas- 

 sovsky, from large intestine of horse; x854 (after Hsiung). H, I. Squalo- 

 phrya macrostyla Goodrich and Jahn, a loricate type, lateral view and 

 cross-section; body about 90x40/i (after G. & J.). J. Dendrocometes para- 

 doxus Stein, x285 (after Pestel). 



ciliate host (138). In reproduction, the parasite produces a typical ciliated 

 larva which is set free as a migratory stage and later invades a new host 

 (Fig. 7. 53, A-D). 



In addition to the common occurrence of ciliated larvae, transforma- 

 tion of the adult into a migratory stage also may occur, as in Podophrya 

 parasitica (Fig. 7. 56, D). This migratory stage (59), in tinn, becomes 



