794 PROTOZOOLOGY 



P. insidiosa C. and L. (Fig. 337, b). Phoronts, trophonts and 

 tomites in phoronts of Gymnodinioides. 



Genus Polyspira Minkiewicz. Trophonts reniform; 9 rows and 

 several extra rows; striae 1-4 and 5-9 with 2 others in 2 bands. 



P. delagei M. (Fig. 338, a). Phoronts on gills and trophonts in the 

 moult of Eupagurus berhardus. 



Genus Pericaryon Chatton. Trophonts ellipsoid; 14 ciliary rows. 



P. cesticola C. (Fig. 337, d). Trophonts in the gastro vascular cavity 

 of the ctenophore, Cestus veneris; other stages unknown. 



Genus Calospira Chatton and Lwoff. Trophonts resemble those 

 of Spirophrya; 20 ciliary rows; macro nucleus twisted band-form; a 

 micronucleus. 



C. minkiewiczi C. and L. (Fig. 338, b). Phoronts attached to in- 

 tegument of Harpacticus gracilis (copepod); trophonts in its fresh 

 carcass; tomonts and tomites in water. 



Genus Vampyrophrya Chatton and Lwoff. Trophonts ovoid; 10 

 ciliary rows. One species. 



V. pelagica C. and L. (Fig. 337, c; 338, c). Phoronts on Paracala- 

 nus parvus, Clausocalanus furcatus, etc., and trophonts in their 

 fresh carcasses. 



Genus Traumatiophtora Chatton and Lwoff. Trophonts oval; 11 

 ciliary rows. One species. 



T. punctata C. and L. (Fig. 338, d). Trophonts in fresh carcass of 

 Acartia clausi. 



Genus Hyalospira Miyashita. Trophonts in the moult of a fresh- 

 water crustacean, with a contractile vacuole and a long accessory 

 canal, and with a band-shaped macro nucleus; protomont encysts in 

 narrow crevices; tomont divides into 2-16 tomites; tomite with a 

 tubular macronucleus, two ciliated grooves on ventral side, and 9 

 ciliary rows; phoront cysts occur on the body hairs of Xiphocaridina 

 to metamorphose into trophont (Miyashita, 1933). 



H. caridinae M. (Fig. 339 a). Fully grown trophonts 80-120^ long; 

 phoronts and phoront cysts present in fresh moults and body hairs 

 respectively of the freshwater shrimp, Xiphocaridina compressa. 



Genus Cyrtocaryum Faure-Fremiet and Mugard. Trophont, as- 

 tomous; external appearance resembles Anoplophrya (p. 691); macro- 

 nucleus reticulate as in Foettingeria; liberated in sea water; no en- 

 cystment, but multiplication in free state; differentiation of an oral 

 ciliary field. 



C. halosydnae F. and M. (Fig. 339, b-e). Trophont in the lateral 

 caeca of the digestive tube of Halosydna gelatinosa; pyriform, 90- 

 120/x by 65-80 /x ; with about 60 slightly spiral ciliary rows; cilia in 



