6 . THE PHYT,UM PROTOZOA
197
Other information. According to Raabe (1938), G. gargnrius is only
found on hosts which harbor few or no other ciliates.
17. Thigmophrya macomae Chatton and Lwoff, 1923. (Figs. 108 and 109)
(Subclass Holotrichia; order Thigmotrichida; family Thigmophryidae)
Thigmophrya macomae, described by Chatton and Lwoff (1923) on
the gills of Macorr~a balthica, is briefly mentioned here since this clam,
but particularly the closely related species M . nasuta and M . secta, are
harvested as food (Hedgpeth, 1962).
Description. Body elongate ovoid, averaging 110 p x 40 p, dorsoventrally flattened, with ventral surface slightly concave ; cytostome
in posterior third of body ; oral funnel opened ; contractile vacuole opens
a t bottom of cytopharynx ; with numerous rows of cilia.
197
Other information. According to Raabe (1938), G. gargnrius is only
found on hosts which harbor few or no other ciliates.
17. Thigmophrya macomae Chatton and Lwoff, 1923. (Figs. 108 and 109)
(Subclass Holotrichia; order Thigmotrichida; family Thigmophryidae)
Thigmophrya macomae, described by Chatton and Lwoff (1923) on
the gills of Macorr~a balthica, is briefly mentioned here since this clam,
but particularly the closely related species M . nasuta and M . secta, are
harvested as food (Hedgpeth, 1962).
Description. Body elongate ovoid, averaging 110 p x 40 p, dorsoventrally flattened, with ventral surface slightly concave ; cytostome
in posterior third of body ; oral funnel opened ; contractile vacuole opens
a t bottom of cytopharynx ; with numerous rows of cilia.