584 PROTOZOOLOGY 



shaped parts; 2 contractile vacuoles on dorsal side; 200^ long; in 

 mosses. 



D. anser (Miiller) (Figs. 22, c, d; 277, c). Proboscis slightly flattened; 

 macro nucleus divided into numerous bodies; contractile vacuoles in 

 a row on dorsal side with 2-3 contractile vacuoles in proboscis; 250- 

 400m, sometimes up to 600^ long; fresh water. 



Genus Paradileptus Wenrich {TentacuUfera Sokoloff). Body 

 broader at the level of cytostome; with a wide peristomal field that 

 bears the cytostome and is surrounded for 2/3-3/4 its circumference 

 by a raised rim which is continuous anteriorly with the spirally 

 wound proboscis; tricho cyst-zone traversing the rim and anterior 

 edge of proboscis; contractile vacuoles small, numerous, distributed; 

 macronucleus segmented ; fresh water. 



P. conicus W. (Fig. 277, d). 100-200m by 50-100m. 



P. rohustus W. (Fig. 277, e). 180-450m long. 



Genus Branchioecetes Kahl. Preoral part somewhat like that of 

 Amphileptvs, and bent dorsally; ventral side of neck with 2 rows of 

 trichocysts; cytostome at posterior end of neck; cytopharynx with 

 trichocysts; ectocommensals on Asellus or Gammarus. 



B. gammari (Penard) (Fig. 277, f). 130-200/x long; on Gammarus. 



Family 3 Loxodidae Biitschli 



Genus Loxodes Ehrenberg. Lancet-like; strongly compressed; an- 

 terior end curved ventrally, and usually pointed; right side slightly 

 convex; uniform ciliation on about 12 longitudinal rows; ectoplasm 

 appears brownish, because of closely arranged brownish protricho- 

 cysts; endoplasm reticulated ; 2 or more vesicular macro nuclei; one or 

 more micronuclei; 5-25 Miiller's vesicles (p. 76; Fig. 30, a, h) in dor- 

 sal region; fresh water. 



L. vorax Stokes (Fig. 277, g). 125-140^ long; yellowish brown, a 

 row of slightly longer cilia; sapropelic in standing fresh water. 



L. magnus S. (Fig. 277, h). Extended about 700^ long; dark brown; 

 12-20 or more Miiller's vesicles in a row along dorsal border; stand- 

 ing pond water. 



Genus Remanella Kahl. Similar to Loxodes in general appearance; 

 but with endoskeleton consisting of 12-20^ long spindle-form needles 

 lying below broad ciliated surface in 3-5 longitudinal strings con- 

 nected with fibrils; Miiller's vesicles (Fig. 30, c) in some, said to be 

 different from those of Loxodes (Kahl); sandy shore of sea. 



R. rugosa K. (Fig. 277, i, j). 200-300^ long. 



