MICROSPORIDIA 



though the eggs are free from the parasites, which condition may be 

 looked upon as a parasitic castration. Morphology and development 

 (Zander, 1909; Fantham and Porter, 1912). 



N. cyclopis Kudo (Fig. 289, h, i). In Cyclops fuscus; spores 4.5/z by 

 3 M (Kudo, 1921b). 



N. anophelis K. (Fig. 289, j, k). In the larvae of Anopheles quadri- 

 maculatus; spores 5-6 m by 2-3^ (Kudo, 1925). It was also found in A. 

 maculipennis (Missiroli, 1928). 



Fig. 2S9. a, b, Nosema bombycis (Kudo) (a, fresh spores, X1500; b, a 

 heavily infected silkworm larva showing characteristic dots on integu- 

 ment, Xf); c, d, N. bryozoides (c, infected funiculus, X270 (Braem); d, a 

 stained spore, X1200 (Schroder)); e-g, A r . apis (Kudo) (e, a fresh spore; f, 

 a stained spore, X 1560; g, a spore with the extruded polar filament as seen 

 in dark field, X800); h, i, views of fresh spores of N. cyclopis, X1560 

 (Kudo); j, k, fresh spores of N. anophelis, X1600 (Kudo); 1, m, preserved 

 and stained spores of N. aedis, XI 530 (Kudo); n, Frenzelina conformis, a 

 gregarine, infected by schizonts and spores of Nosema frenzelinae (Leger 

 and Duboscq) ; o-q, Nosema notabilis, X 1400 (Kudo) (o, a stained tropho- 

 zoite of Sphaerospora polymorpha, a myxosporidian, infected by six 

 trophozoites of Nosema notabilis; p, another host trophozoite in which 

 nine spores and two trophozoites of N. notabilis occur; q, six fresh spores 

 of N. notabilis). 



