HOLOTRICHA 



793 



Fig. 338. a, Polyspira delagei; b, Calospira minkiewiczi, a trophont, 

 X1300; c, Vampyrophrya pelagica, d, Traumatiophtora punctata, X1300 

 (Chatton and Lwoff). 



Genus Ophiurespira Chatton and Lwoff. Trophonts ovoid; 10 

 ciliary rows; striae 9 and 10 interrupted. One species. 



0. weilli C. and L. (Fig. 337, a). Trophonts in the intestine of 

 Ophiothrix fragilis and Amphiura squamata (Ophiuroidea). 



Genus Photorophrya Chatton and Lwoff. Trophonts small ; ciliation 

 approximately that of Ophiurespira; massive macro nucleus; with 

 peculiar trichocysts comparable with the nematocysts of Polykrikos 

 (p. 324) ; ecto- or endo -parasitic in encysted stages of other aposto- 

 means. Several species. 



