786 



PROTOZOOLOGY 



by a suctorial tentacle; adult stage without cilia; ciliature is reduced 

 to infraciliature of 2 groups; multiplication by budding; embryos are 

 ciliated; on the gills of mollusks (Chatton and Lwoff, 1921). 



S. dosiniae C. and L. (Fig. 334, a-c). Body 120ju by 15-2(V; young 

 embryo ciliated ; on the gills of Dosinia exoleta, Venus ovata, Corbula 

 gibba, etc. (France) ; Mactra solidissima (Woods Hole) (Chatton and 

 Lwoff, 1950). 



Fig. 334, a-c, Sphaenophrya dosiniae (a, a young embryo; b, a growing- 

 individual attached to an epithelial cell of the host by a suctorial tentacle; 

 c, an individual from which a bud is ready to separate) ; d, a side view of 

 Pelecyophrya tapetis in life; e, f, Gargarius gargarius, XI 200 (e, in life, 

 showing a macronucleus and a micronucleus; f, diagram showing the 

 ciliature) (Chatton and Lwoff). 



Genus Pelecyophrya Chatton and Lwoff. Body hatchet-shaped, 

 laterally compressed; posterior end rounded; a large "sucker" at the 

 anterior end; infraciliature in two groups, five on right and four on 

 left; multiplication by budding; on the gills of mollusks (Chatton and 

 Lwoff, 1922). 



P. tapetis C. and L. (Fig. 334, d). Body 23-25/x by about 10 »; 

 macronucleus spherical; ovoid micronucleus; cytoplasm contains 



