MICROSPORIDIA 475 



A'', apis Zander (Fig. 220, e, /). In gut of honey bees; spores 4- 

 6m by 2-4/x. 



A'', cyclopis Kudo (Fig. 220, g^). In Cyclops fuscus; spores 4.5m 

 by 3m. 



N. anophelis K. (Fig. 220, j, k). In Anopheles quadrimaculatus 

 (larva) ; spores 5-6m by 2-3m. 



Genus Glugea Thelohan. Each sporont develops into 2 spores; 

 the infected host cells become extremely hypertrophied, and 

 transform themselves into the so-called Glugea cysts. Many spe- 

 cies. 



G. anornala (Moniez) (Fig. 220, I, m). In connective tissue of 

 stickle backs; spores 4-6m by 2-3m. 



G. midleri Pfeiffer. In muscles of Gammarus; spores 5-6m by 2- 

 3m- 



G. hertwigi Weissenberg (Figs. 218, h; 220, n). In various tissue 

 cells of Osmerus; spores 4-5. 5m by 2-2. 5m. 



Genus Perezia Leger et Duboscq. Each sporont produces 2 

 spores as in Glugea, but infected host cells are not hypertrophied. 

 A few species. 



P. mesnili Paillot (Fig. 220, o). In cells of silk glands and Mal- 

 pighian tubules of larvae of Pieris hrassicae; spores 3.4m by 1.5-2m. 



Genus Gurleya Doflein. Each sporont develops into 4 sporo- 

 blasts and finally into 4 spores. Not common. 



G. richardi Cepede (Fig. 220, p, q). In Diaptomus castor; spores 

 4-6m by 2.8m. 



Genus Thelohania Henneguy. Each sporont develops into 8 

 sporoblasts and ultimately into 8 spores ; sporont membrane may 

 degenerate at different times during spore formation. Numerous 

 species. 



T. legeri Hesse (Figs. 68; 221, a-e). In fat-bodies of anopheline 

 larvae; spores 4-6m by 3-4m; heavily infected larvae die without 

 metamorphosing into adults; widely distributed. 



T. opacita Kudo (Figs. 218, c; 221, f-h). In fat-bodies of culi- 

 cine larvae; spores 5.5-6m by 3.5-4m. 



Genus Stempellia Leger et Hesse. Each sporont produces 1, 2, 

 4, or 8 sporoblasts and finally 1, 2, 4, or 8 spores. 2 species. 



S. magna Kudo (Figs. 218, /, g; 219; 221, i-l). In fat-bodies of 

 various culicine larvae; spores 12. 5-16. 5m by 4-5m; polar capsule 

 visible in life; polar filament when extruded under mechanical 

 pressure, measures up to 350-400m long. 



