512 



PROTOZOOLOGY 



H. nemertis Debaisieux (Fig. 242, d). In connective tissue of 

 Lineus hilineatus; spores oval with a fiat operculum, but without 

 any projections of envelope, 7m by 4^. 



H. heterocirri C. and M. (Fig. 242, e). In gut epithelium of Het- 

 erocirrus viridis; mature organisms 50-60m by 30-40m; spores 6.5m 

 by 4m. 



H. scolopli C. and M. (Fig. 242, /). In Scoloplos millleri; fully 

 grown form 100-150m by 20-30m; spores 10m by 6.5m. 



Fig. 242. a, b, Haplosporidium chitonis, XlOOO (Pixell-Goodrich;) c, H. 

 limnodrili, XlOOO (Granata); d, H. nemertis, XlOOO (Debaisieux); e, H. 

 heterocirii, XlOOO (Caullery and Mesnil); f, H. scolopli, XlOOO (Caullery 

 and Mesnil); g, H. vejdovskii, XlOOO (Caullery and Mesnil); h, i, Uro- 

 sporidium fuliginosum, XlOOO (Caullery and Mesnil); j, k, Bertramia 

 asperospora (j, cyst with spores; k, empty cyst), X1040 (Minchin); 1, m, 

 C oelosporidium periplanetae (1, trophozoite with spores and chromatoid 

 bodies), X2540 (Sprague). 



H. vejdovskii C. and M. (Fig. 242, g). In a freshwater oligochaete, 

 Mesenchytraeus flavus ; spores 10-12m long. 



Genus Urosporidium Caullery and Mesnil. Similar to Haplo- 

 sporidium, but spherical spore with a long projection. 



U. fuliginosum C. and M. (Fig. 242, h, i). In the coelom of the 

 polychaete, Syllis gracilis; rare. 



