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HANDBOOK OF PROTOZOOLOGY 



Genus Holosticha Enz. Two ventral and two marginal rows 

 of cirri. Caudals. Salt or fresh water. 



Holosticha rubra Ehrenberg (Fig. 165, /). Marine. Body 

 about 180 microns long. 



Genus Stichotricha Perty. Body contractile, elongate cylin- 

 drical. Long peristome reaches the middle of the body. Rows 

 of cilia spiral. Sometimes tube-dwelling, then colonial. Fresh 

 or salt water. 



Stichotricha secunda Perty (Fig. 166, a). Fresh water. 

 About 180 to 200 microns long. 



Fig. 166 



a. 

 b. 

 c-e. 



f. 



g- 

 h. 



Sty chotrich a secunda. X150 (After Stein). 

 Uroleptus musculus. X180 (After Stein). 

 Pleurotricha lanceolata. X275 (After Meanwell). c, active 

 form; d, encysting form; e, encysted individual. 

 Gastrostyla steini. X200 (After Calkins). 

 Onychodromus grandis. X170 (After Stein). 

 Actinotricha saltans. X200 (After Maupas from Biitschli). 



