338 



SPOROZOA. 



valves not striated. Space outside the capsule filled entirely 

 with uniformly granular sporoplasm, containing several black 

 dots in the fresh condition. Polar capsules one at each end 

 of the spore, spherical at first, but ovoidal after the extrusion 

 of the polar filament. Openings through which filaments 

 are extruded are marked by elevated areas of the shell just 

 in front of the polar capsules. 



Dimensions. — Spore 12-15 /i in length, 8-5-10 /x in breadth ; 

 polar capsules S-l^-lfx, ; polar filament 40-50 /u.. 



Remarks. — Description is based on Chakravarty's paper in 

 manuscript. 



Habitat. — Gall-bladder of Glossogobius giuris (Ham.-Buch.) : 

 Bengal, Calcutta. 



282. Myxidium mackiei Bosanquet. (Fig. 167.) 



fMyxidium m.ackiei, Bosanquet, 1910, pp. 436-8, figs. 7-13. 



The vegetative phase does not ordinarily exhibit a distinction 

 between ectoplasm and endoplasm ; in a few cases where the 



Fig. 167. — Myxidium mackiei Bosanquet. A, vegetative phase in 

 contact with cells of a renal tubule ; B, spores. (After 

 Bosanquet.) 



whole organism was converted into spores there was a cuticle 

 or cyst-wall. Cytoplasm contains a large number of nuclei, 

 apparently of two varieties, some vesicular, others smaller 

 and compact. Spores formed in pairs, at many points simul- 

 taneously, ultimately the whole mass being converted into 

 spores. A portion of the cytoplasm becomes rounded oflF 

 and lies in a definite space Avithin the parasite. This portion 



