342 HANDBOOK OF PROTOZOOLOGY 



Intoshellina maupasi Cepede (Fig. 147, a). In the intestine 

 of Tubifex sp. 



Genus Haptophrya Stein. Body elongate, uniformly ciliated; 

 anterior end without neck-like constriction. On the ventral side 

 there is a circular sucker surrounded by one or two rows of 

 cilia; but no other fixing cell-organ. In the intestine of Am- 

 phibia. 



Haptophrya michiganensis Woodhead (Fig. 147, b). In the 

 intestine of the four-toed salamander, Hemidactyliiim scutatum. 

 Frequent. Length 1.1 to 1.6 mm. 



Genus Sieboldiellina Collin. Similar to Haptophrya, but 

 with neck-like constriction and there is a single row of cilia 

 around the ventral sucker. Without other fixing organ. 



Sieboldiellina planariarum (Stein) (Fig. 147, c). In the gas- 

 trovascular cavity of Tuberllaria. 



Genus Lachmannella Cepede. Without sucker, but fixing 

 organ is present. 



Lachmannella recurva (Claparede and Lachmann) (Fig. 

 147, d) in the gastro-vascular cavity of the turbellarian, 

 Planaria limacina. 



Genus Steinella Cepede. Sucker without encircling cilia; 

 with two fixing cell-organs. One species in Tuberllaria. 



Genus Lada Vejdovsky. Antero-ventral portion bears a 

 large sucker surrounded by a thick ciliated horseshoe-shaped 

 rim. 



Lada wrzesniowskii Vejdovsky. In the oligochaete, Phreato- 

 thrix pragensis. 



Genus Cepedella Poyarkofif. Body small, pyriform with a 

 pointed anterior end, where there is a concavity for fixation of 

 body, from which longitudinal myonemes arise. No contractile 

 vacuole. Macronucleus globular. 



Cepedella hepatica Poyarkofif. Body 16 to 26 microns long; 

 intracellular parasite of the liver of Sphaerium corneum, a 

 cyclad mollusc of France. 



Genus Herpetophrya Siedlecki. Body ovoid, anterior end 

 possesses a pointed, mobile, tactile (non-ciliated) cone. Con- 

 tractile vacuoles absent. Macronucleus globular. 



Herpetophrya astoma Siedlecki. In the body cavity of an 

 annelid worm, Polymnia. 



