694 PROTOZOOLOGY 



the both ends of the body; a median micronucleus; in the intestine of 

 Annelida. 



S. chattoni H. In the mid-gut of Potamoceros triqueter, a common 

 annelid in the vicinity of Banyuls; 180-550/x by 50/x; micronucleus 

 fusiform, 6-IOm long; often infected by a microsporidian, Gurleya 

 nova H. 



Genus Protanoplophrya Miyashita. Similar to Anoplophrya; but 

 with rudimentary oral apparatus, a long slit, an undulating mem- 

 brane and cytopharynx in anterior region of body; macronucleus 

 elongate band ; numerous contractile vacuoles. One species. 



P. stomata Miyashita (Fig. 297, a). Cylindrical; up to 1.5 mm. by 

 about 70m; in hind-gut of Viviparus japonicus and V. malleatus. 



Family 2 Opalinopsidae Hartog 



Genus Opalinopsis Foettinger. Oval or ellipsoid; macronucleus 

 fragmented; ciliation uniform and close; parasite in the liver of 

 cephalopods. A few species. 



0. sepiolae F. (Fig. 297, b). 40-80m long; in the liver of Sepiola ron- 

 deletii and Octopus tetracirrhus. 



Genus Chromidina Gonder (Benedenia Foettinger). Elongate; 

 anterior region broader, end pointed; uniform ciliation; macro- 

 nucleus in irregular network distributed throughout body; micro- 

 nucleus obscure; budding and encystment; Cheissin holds that this 

 is identical with Opalinopsis. One species. 



C. elegans (Foettinger) (Fig. 297, c, d). 500-1500m by about 30-60m 

 in kidney and gonad of cephalopods: Sepia, Loligo, Illex and Spirula 

 (Jepps, 1931). Morphology (Wermel, 1928). 



Family 3 Haptophryidae Cepede 



Genus Haptophrya Stein. Elongate; uniformly ciliated; anterior 

 end with a neck-like constriction; a circular sucker surrounded by 

 1-2 rows of cilia. A few species. 



H. michiganensis Wcodhead (Fig. 297, e). 1.1-1.6 mm. long; in the 

 gut of the four-toed salamander, Hemidactylium scutatum; Michigan. 

 Cytology (Bush, 1933); contractile canal (MacLennan, 1944). 



H. virginiensis Meyer. 354/x by 95m; macronucleus about one- 

 third of the body length; in the intestine of Rana palustris. 



Genus Steinella Cepede. Anterior end broad; sucker-like depres- 

 sion without encircling cilia, but with 2 chitinous hooks. One species. 



S. uncinata (Schultze). Up to 200m long; in gastro vascular cavity 

 of Planaria ulvae, Gunda segmentata and Proceros sp. 



Genus Lachmannella Cepede. With a chitinous hook at anterior 



