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cautiously inspected and in its epithelium a new sporozoan parasite was 
found. The sporoblast of this species contains about 2 spores. The 
spore is perfectly spherical in form with but a very slightly pointed an- 
terior end. Its size is 8—10 u and its breadth 7—8w. In side view it 
is spindle in shape, having 5—6 « in its broadest width. The shell is 
smooth and rather thin (Fig. 2). The polar capsule is two in number 
but slight dissimilar in shape and arranged in somewhat convergent 
form. It is large and pear shaped in its outline, having 5 « in length 
and 4 u in breadth. It occupies about 5/8 of the spore in space. No 
vacuole is brought into view by any iodine solution. This species is 
smaller than hitherto known species among the Sphaerospora, to which 
the present form no doubt belongs. Besides, from the description above, 
it will be apparent that the present species shows striking differences 
Fig. 3. 
Fig. 2. Sphaerospora acuta. Much enlarged spore. a, Front view; b, side view; 
c, anterior view. 
Fig.3. Sphaerospora angulata. Much enlarged spore. a, Front view; b, side view 
c, anterior view. 
from all others in the form and size of spore and in other respects. 
Hence I consider this to be a new species and have named it as acuta 
after its pointed anterior end. 
3. Sphaerospora angulata n. sp. 
This species was found in the kidney of cyprinoid fishes in the same 
manner as the Mitraspora cyprini described above, and sometimes it 
appears together with this latter form. Nevertheless, it occurs less 
frequently. The number of the spore in the sporoblast is in this case 
always less than in the others, rarely exceeding two. It is small, being 
7—8.u in length and 6—7 u in breadth. It is somewhat triangular in 
form with its sides swollen out. Often it is also slightly pointed at the 
mid-basal part, that is at the mid-posterior margin of the spore (Fig. 3). 
