538 PROTOZOOLOGY 



etes and female, macrogametes ; zygotes or amphionts (spores) 

 rounded. 



Genus Schaudinnella Nusbaum. Trophozoites elongate spindle, 

 free in lumen or attached to gut wall; sporadins male or female; 

 spherical macrogametes and fusiform microgametes ; zygotes or 

 amphionts encapsulated, passed out of host or enter gut epithelium, 

 dividing to produce many sporozoites (autoinfection). 



S. henleae N. (Fig. 230, b, c). In gut of Henlea leptodera; mature 

 trophozoites about 70/x by 9/i; attached trophozoite with a clear 

 wart-like epimerite; female and male sporadins; macrogametes, 

 5-7.5^ in diameter; microgametes, spindle-form, 1-1.25/* long; 

 sporozoites rounded oval, 2.5-3/* in diameter. 



Family 7 Diplocystidae Bhatia 



Coelomic or gut parasites of insects; trophozoites solitary or asso- 

 ciated early in pairs; spores round or oval, with 8 sporozoites. 



Genus Diplocystis Kunstler. Trophozoites spherical to oval; asso- 

 ciation of 2 individuals begin early in spherical form; spores round 

 or oval, with 8 sporozoites; in the intestine and coelom of insects. 



D. schneideri K. (Fig. 230, d, e). In the body cavity of Peri- 

 planeta americana; young stages in gut epithelium; cysts up to 2 

 mm. in diameter; spores 7-8/* in diameter; sporozoites 8/i long. Meio- 

 sis (p. 208). 



Genus Lankesteria Mingazzini. Trophozoites more or less spatu- 

 late; spherical cyst formed by 2 laterally associated sporadins in 

 rotation; spores oval, with flattened ends, with 8 sporozoites; in the 

 gut of tunicates, flatworms and insects. Several species. 



L. culicis (Ross) (Fig. 225). In gut and Malpighian tubules of 

 Aedes aegypti and A. albopictus; mature trophozoites about 150- 

 200/z by 3 1-4 1/t ; cysts spherical, in Malpighian tubules of host, 

 about 30/i in diameter; spores 10/t by 6/t. 



Family 8 Urosporidae Woodcock 



Coelomic parasites in various invertebrates; sporadins associative; 

 spores with unequal ends; with or without epispores of various forms, 

 with 8 sporozoites. 



Genus Urospora Schneider. Large; frequently in lengthwise asso- 

 ciation of 2 individuals of unequal sizes, spores oval, with a filamen- 

 tous process at one end; in body cavity or blood vessel of Tubifex, 

 Nemertinea, Sipunculus, Synapta, and Chiridota. Several species. 



U. chiridotae (Dogiel) (Fig. 230, /). In blood vessel of Chiridota 

 laevis (in Canada); paired trophozoites up to about 1 mm. long; with 

 stiff 'hairs' (Goodrich, 1925). 



