THE SPOROZOA 



197 



FIG. 41. 



Two spores of Porospora gigantea, 

 v. Ben. (par. Homarus vulgaris), show- 

 ing the numerous sporozoites planted 

 round a central mass of residual pro- 

 toplasm. (From Lankester.) 



FIG. 40. 



Porospora gigantea, v. Ben. 

 Association of three individ- 

 uals adhering to one another, 

 of which the hindermost has 

 no obvious protomerite. (From 

 Wasielewski, after Leger.) 



FIG. 42. 



Gregarina blattarum, Sieb. (par. Periplaneta 

 orientalis). 1, a syzygy of two sporonts ; a, 

 nucleus. 2, ripe cyst, partially emptied ; a, 

 channels leading to the sporoducts ; 6, the re- 

 maining spores ; c, endocyst ; d, the everted 

 sporoducts ; , the gelatinous epicyst. (From 

 Lankester.) 



cylindrical. G. tenax, A. Schn., from the gut 

 of the cockroach Ectobia lapponica ; G. ephemerae, 

 Frantz, from the intestine of Ephemera, larva. 

 Genus 25. Eirmocystis, Leger, 1892 (Hirmocystis, 

 Labbe, 1899). Epim. a conical knob. Sporonts 

 forming syzygies of numerous individuals (Fig. 

 24). Cysts without sporoducts. Spores oval in 

 form (Fig. 34, a). E. polymorpha, Leger, from 

 the intestine of Limnobia, larva, and other species 

 from the digestive tracts of insects. Genus 26. 

 Hyalospora, A. Schneider, 1875. Cysts without 

 sporoducts. Spores ellipsoidal, pointed at the 

 ends, bulging in the middle. H. roscoviana, 

 A. Schn., type-species, from the gut of Petrobius 

 maritimus, and two other species. Genus 27. 

 Euspora, A. Schneider, 1875. Cysts without 

 sporoducts. Spores prismatic. Unique species 

 E. fallax, A. Schn., from the gut of Rhizotrogus 

 aestivus. Genus 28. Sphaerocystis, Le"ger, 1892. 

 Body of trophozoite spheroidal, with transitory 

 protom. Cysts without sporoducts. Spores oval 

 in form (Fig. 34, a). Unique species S. simplex, 

 L4g., from the gut of Cyphon pallidus, larva. 

 Genus 29. Cnemidospora, A. Schneider, 1882. 



