NEW CHLOROMYXUM FROM CARP. 



259 



middle parts four or five ridges running across in nearly parallel lines 

 and on both sides of these two more ridges each bent in a loop-like 

 manner. In equatorial optical section, the spore presents an outline 

 very much like that of a toothed wheel with nearly equidistant teeth, 

 i.e. the ridges in optical section, either sixteen or eighteen in number. 



Each spore contains four polar capsules as in all other members 

 of Chloromyxum. They are situated in the slightly pointed anterior 

 pole. Two of them are somewhat larger than the rest, attaining a 

 diamètre of about 4 jx. By application of a stimulating reagent, the 

 capsules can be easily made to throw out the filament. This may be 

 64 ft long. 



To my knowledge, there have hitherto been known in all ten 

 species of Chloromyxum. Of all these, C. cristatum Léger (from the 

 gall-bladder of Tinea vulgaris) seems to be most nearly related to 

 the present species, inasmuch as it possesses a number of similar 

 meridionally disposed ridges on the exterior of spores. But these 

 ridges differ markedly in their number and mode of arrangement 

 from the same of C. koi. Moreover, both the sporoblasts and spores 

 of the latter seem to be considerably larger, the spores of C. cristatum 

 being known to be not more than 10 — 11 mm. in longest diamètre. 



