FAMILY: TELOMYXID^ 747 



microns, and it is curved so that the distance between its two ends is 

 2 microns. Each pansporoblast gives rise to eight spores T. vibrio 

 occurs in the fat body of larvas of species of Ceratopogon. 



Genus : Spirillonema. 



Leger and Hesse (1922a) suggested the generic name Spironetna for 

 those Microsporidiida which have spiral spores resembling spirilla (Fig. 318). 

 As the name Spironetna was given by Klebs (1892) to a flagellate, the 

 name SpiriUonetna may be used. 



Spirillonema octospora (Leger and Hesse, 1922). — This parasite, the 

 only member of the genus, is found in the fat body of larvae of Ceratopogon. 

 The spiral spore is 8 to 8-5 microns long and 1 micron wide. Each pan- 

 sporoblast gives rise to eight spores (Fig. 318). 



4{;* ^'-/3 \l^ S^( 

 '•fi% '-Z^^^ ^1" ^'^* 



G 



Fig. 318. — Spores of Microsporidiida. (After Leger and Hesse, 1922.) 



1-4. Bacterial types of spore deeply stained as they appear in smears or sections of 

 tissue ( X 1,000). 

 5-12. Types of spore to show some details of structure ( x 3,000). 



1, 5, 6. Cocconenia. 2, 12. Toxonema vibrio. 



3. Mrazekiahacilliformis. 4, 11. Spirillonema octospora. 



7. Glugea. 8, 9. Telomyxa. living and stained. 10. Mrazekia tetrasporn. 



Genus : Telomyxa Leger and Hesse, 1910. 

 Telomyxa glugeiformis Leger and Hesse, 1910. — This form, which is 

 the only representative of the genus, occurs as a parasite of the cells of 

 the fat body of the larvae of Ephemera vulgata (Fig. 318). The spores are 

 ovoid, and measure 6*5 by 4 microns. There is a polar capsule at each 

 end of the spore. After the multiplicative phase, certain uninucleate cells 

 become pansporoblasts, and each gives rise to groups of eight, sixteen, or 

 more cells, which become transformed into spores. Leger and Hesse 

 regarded this organism, the spores of which have two polar capsules, as 

 a connecting link between the Myxosporidiida and Microsporidiida. 



