MICROSPORIDIA 



673 



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

 few species. 



P. mesnili Paillot (Fig. 290, ?)• In cells of silk glands and Malpi- 



Fig. 290. a-f, Glugea anomala (a, a young trophozoite in a connective 

 tissue cell of the intestine of a young host fish, seven days after feeding on 

 spores; b, c, more advanced stages; d, a later stage, the host cell being 

 multinucleated and 41/x in diameter, X1000 (Weissenberg) ; e, section of 

 an infected Gasterosteus aculeatus, showing two large cysts (Thedohan); f, 

 a fresh spore, X1500 (Stempell)); g, h, G. hertwigi (Schrader) (g, cross- 

 section of the infected intestine of a smelt, X14; h, 2 spores); i, stained 

 spores of Perezia mesnili, X2265 (Palliot); j, section of Lankesteria as- 

 cidiae, a gregarine, infected by P. lankesteriae, X900(Leger and Duboscq) ; 

 k-o, Gurleya tetraspora (k, infected hypodermal cells of Moina, X660 

 (Jirovec); 1, a mature sporont; m, a fresh spore (Doflein); n, stained 

 spores; o, spores with extruded polar filaments (Jirovec)); p, q, a sporont 

 and a spore with the extruded filament of Gurleya richardi, XT 200 

 (Cepede). 



