218 PROCEEDINGS OF THE ACADEMY OF [Mar., 



Unfortunately, the material was not in good condition for cytological 

 study, and very little could be made out as to the structure of the 

 spores. As well, however, as could be determined, the form was 

 that shown by the spore of Sarcocystis rileyi, that is, one end was 

 rounded, the other pointed. The spores were sometimes straight, 

 sometimes curved, but in the latter case the curvature was slight, 

 which also seems characteristic for avian Sarcosporidia. Within, 

 in a few of the better preserved specimens, it was possible to make 

 out a vacuole in which was a chromatin granule. This structure is 

 probably to be interpreted as a vesicular nucleus. 



The spores were small, measuring from 4 to 5 microns long by 

 .75 to 1.00 micron broad. 



